├── app ├── .gitignore ├── src │ ├── main │ │ ├── res │ │ │ ├── values │ │ │ │ ├── strings.xml │ │ │ │ ├── colors.xml │ │ │ │ ├── dimen.xml │ │ │ │ └── styles.xml │ │ │ ├── drawable │ │ │ │ ├── beef.jpg │ │ │ │ ├── brunch.jpg │ │ │ │ ├── dinner.jpg │ │ │ │ ├── wine.jpg │ │ │ │ ├── barbeque.jpg │ │ │ │ ├── chicken.jpg │ │ │ │ ├── italian.jpg │ │ │ │ ├── breakfast.jpg │ │ │ │ ├── white_background.png │ │ │ │ ├── ic_error_outline_black_24dp.xml │ │ │ │ ├── ic_mood_bad_black_24dp.xml │ │ │ │ └── ic_launcher_background.xml │ │ │ ├── mipmap-hdpi │ │ │ │ ├── ic_launcher.png │ │ │ │ └── ic_launcher_round.png │ │ │ ├── mipmap-mdpi │ │ │ │ ├── ic_launcher.png │ │ │ │ └── ic_launcher_round.png │ │ │ ├── mipmap-xhdpi │ │ │ │ ├── ic_launcher.png │ │ │ │ └── ic_launcher_round.png │ │ │ ├── mipmap-xxhdpi │ │ │ │ ├── ic_launcher.png │ │ │ │ └── ic_launcher_round.png │ │ │ ├── mipmap-xxxhdpi │ │ │ │ ├── ic_launcher.png │ │ │ │ └── ic_launcher_round.png │ │ │ ├── menu │ │ │ │ └── recipe_search_menu.xml │ │ │ ├── xml │ │ │ │ └── network_security_config.xml │ │ │ ├── mipmap-anydpi-v26 │ │ │ │ ├── ic_launcher.xml │ │ │ │ └── ic_launcher_round.xml │ │ │ ├── layout │ │ │ │ ├── layout_loading_list_item.xml │ │ │ │ ├── layout_search_exhausted.xml │ │ │ │ ├── activity_base.xml │ │ │ │ ├── layout_category_list_item.xml │ │ │ │ ├── activity_recipe_list.xml │ │ │ │ ├── activity_recipe.xml │ │ │ │ └── layout_recipe_list_item.xml │ │ │ └── drawable-v24 │ │ │ │ └── ic_launcher_foreground.xml │ │ ├── java │ │ │ └── com │ │ │ │ └── codingwithmitch │ │ │ │ └── foodrecipes │ │ │ │ ├── adapters │ │ │ │ ├── OnRecipeListener.java │ │ │ │ ├── LoadingViewHolder.java │ │ │ │ ├── SearchExhaustedViewHolder.java │ │ │ │ ├── CategoryViewHolder.java │ │ │ │ ├── RecipeViewHolder.java │ │ │ │ └── RecipeRecyclerAdapter.java │ │ │ │ ├── util │ │ │ │ ├── Testing.java │ │ │ │ ├── VerticalSpacingItemDecorator.java │ │ │ │ ├── Resource.java │ │ │ │ ├── Constants.java │ │ │ │ ├── LiveDataCallAdapter.java │ │ │ │ ├── LiveDataCallAdapterFactory.java │ │ │ │ ├── HorizontalDottedProgress.java │ │ │ │ └── NetworkBoundResource.java │ │ │ │ ├── requests │ │ │ │ ├── responses │ │ │ │ │ ├── CheckRecipeApiKey.java │ │ │ │ │ ├── RecipeResponse.java │ │ │ │ │ ├── RecipeSearchResponse.java │ │ │ │ │ └── ApiResponse.java │ │ │ │ ├── RecipeApi.java │ │ │ │ └── ServiceGenerator.java │ │ │ │ ├── persistence │ │ │ │ ├── Converters.java │ │ │ │ ├── RecipeDatabase.java │ │ │ │ └── RecipeDao.java │ │ │ │ ├── viewmodels │ │ │ │ ├── RecipeViewModel.java │ │ │ │ └── RecipeListViewModel.java │ │ │ │ ├── BaseActivity.java │ │ │ │ ├── AppExecutors.java │ │ │ │ ├── models │ │ │ │ └── Recipe.java │ │ │ │ ├── RecipeActivity.java │ │ │ │ ├── repositories │ │ │ │ └── RecipeRepository.java │ │ │ │ └── RecipeListActivity.java │ │ └── AndroidManifest.xml │ ├── test │ │ └── java │ │ │ └── com │ │ │ └── codingwithmitch │ │ │ └── foodrecipes │ │ │ └── ExampleUnitTest.java │ └── androidTest │ │ └── java │ │ └── com │ │ └── codingwithmitch │ │ └── foodrecipes │ │ └── ExampleInstrumentedTest.java ├── proguard-rules.pro └── build.gradle ├── settings.gradle ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── .idea ├── vcs.xml ├── misc.xml ├── runConfigurations.xml ├── gradle.xml └── codeStyles │ └── Project.xml ├── .gitignore ├── gradle.properties ├── README.md ├── gradlew.bat └── gradlew /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app' 2 | -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | FoodRecipes 3 | 4 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/appearance/Local-db-Cache-Retrofit-REST-API-MVVM/master/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /app/src/main/res/drawable/beef.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/appearance/Local-db-Cache-Retrofit-REST-API-MVVM/master/app/src/main/res/drawable/beef.jpg -------------------------------------------------------------------------------- /app/src/main/res/drawable/brunch.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/appearance/Local-db-Cache-Retrofit-REST-API-MVVM/master/app/src/main/res/drawable/brunch.jpg -------------------------------------------------------------------------------- /app/src/main/res/drawable/dinner.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/appearance/Local-db-Cache-Retrofit-REST-API-MVVM/master/app/src/main/res/drawable/dinner.jpg -------------------------------------------------------------------------------- /app/src/main/res/drawable/wine.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/appearance/Local-db-Cache-Retrofit-REST-API-MVVM/master/app/src/main/res/drawable/wine.jpg -------------------------------------------------------------------------------- /app/src/main/res/drawable/barbeque.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/appearance/Local-db-Cache-Retrofit-REST-API-MVVM/master/app/src/main/res/drawable/barbeque.jpg -------------------------------------------------------------------------------- /app/src/main/res/drawable/chicken.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/appearance/Local-db-Cache-Retrofit-REST-API-MVVM/master/app/src/main/res/drawable/chicken.jpg -------------------------------------------------------------------------------- /app/src/main/res/drawable/italian.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/appearance/Local-db-Cache-Retrofit-REST-API-MVVM/master/app/src/main/res/drawable/italian.jpg -------------------------------------------------------------------------------- /app/src/main/res/drawable/breakfast.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/appearance/Local-db-Cache-Retrofit-REST-API-MVVM/master/app/src/main/res/drawable/breakfast.jpg -------------------------------------------------------------------------------- /app/src/main/res/drawable/white_background.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/appearance/Local-db-Cache-Retrofit-REST-API-MVVM/master/app/src/main/res/drawable/white_background.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/appearance/Local-db-Cache-Retrofit-REST-API-MVVM/master/app/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/appearance/Local-db-Cache-Retrofit-REST-API-MVVM/master/app/src/main/res/mipmap-mdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/appearance/Local-db-Cache-Retrofit-REST-API-MVVM/master/app/src/main/res/mipmap-xhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/appearance/Local-db-Cache-Retrofit-REST-API-MVVM/master/app/src/main/res/mipmap-xxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/appearance/Local-db-Cache-Retrofit-REST-API-MVVM/master/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/appearance/Local-db-Cache-Retrofit-REST-API-MVVM/master/app/src/main/res/mipmap-hdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/appearance/Local-db-Cache-Retrofit-REST-API-MVVM/master/app/src/main/res/mipmap-mdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xhdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/appearance/Local-db-Cache-Retrofit-REST-API-MVVM/master/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/appearance/Local-db-Cache-Retrofit-REST-API-MVVM/master/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/appearance/Local-db-Cache-Retrofit-REST-API-MVVM/master/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /.idea/vcs.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /app/src/main/res/menu/recipe_search_menu.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 7 | 8 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea/caches 5 | /.idea/libraries 6 | /.idea/modules.xml 7 | /.idea/workspace.xml 8 | /.idea/navEditor.xml 9 | /.idea/assetWizardSettings.xml 10 | .DS_Store 11 | /build 12 | /captures 13 | .externalNativeBuild 14 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/adapters/OnRecipeListener.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.adapters; 2 | 3 | public interface OnRecipeListener { 4 | 5 | void onRecipeClick(int position); 6 | 7 | void onCategoryClick(String category); 8 | } 9 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Mon Nov 18 08:25:42 PST 2019 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip 7 | -------------------------------------------------------------------------------- /app/src/main/res/xml/network_security_config.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | static.food2fork.com 5 | 6 | -------------------------------------------------------------------------------- /app/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #fff 4 | #b3b3b3 5 | #FF4081 6 | 7 | #e22b2b 8 | 9 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | -------------------------------------------------------------------------------- /app/src/main/res/values/dimen.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 250dp 4 | 20sp 5 | 16sp 6 | 80dp 7 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/adapters/LoadingViewHolder.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.adapters; 2 | 3 | import android.support.annotation.NonNull; 4 | import android.support.v7.widget.RecyclerView; 5 | import android.view.View; 6 | 7 | public class LoadingViewHolder extends RecyclerView.ViewHolder { 8 | 9 | public LoadingViewHolder(@NonNull View itemView) { 10 | super(itemView); 11 | } 12 | } 13 | -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 10 | 11 | 12 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/adapters/SearchExhaustedViewHolder.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.adapters; 2 | 3 | import android.support.annotation.NonNull; 4 | import android.support.v7.widget.RecyclerView; 5 | import android.view.View; 6 | 7 | public class SearchExhaustedViewHolder extends RecyclerView.ViewHolder { 8 | 9 | public SearchExhaustedViewHolder(@NonNull View itemView) { 10 | super(itemView); 11 | } 12 | } 13 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/util/Testing.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.util; 2 | 3 | import android.util.Log; 4 | 5 | import com.codingwithmitch.foodrecipes.models.Recipe; 6 | 7 | import java.util.List; 8 | 9 | public class Testing { 10 | 11 | public static void printRecipes(Listlist, String tag){ 12 | for(Recipe recipe: list){ 13 | Log.d(tag, "onChanged: " + recipe.getTitle()); 14 | } 15 | } 16 | } 17 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/requests/responses/CheckRecipeApiKey.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.requests.responses; 2 | 3 | public class CheckRecipeApiKey { 4 | 5 | protected static boolean isRecipeApiKeyValid(RecipeSearchResponse response){ 6 | return response.getError() == null; 7 | } 8 | 9 | protected static boolean isRecipeApiKeyValid(RecipeResponse response){ 10 | return response.getError() == null; 11 | } 12 | } 13 | -------------------------------------------------------------------------------- /app/src/test/java/com/codingwithmitch/foodrecipes/ExampleUnitTest.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes; 2 | 3 | import org.junit.Test; 4 | 5 | import static org.junit.Assert.*; 6 | 7 | /** 8 | * Example local unit test, which will execute on the development machine (host). 9 | * 10 | * @see Testing documentation 11 | */ 12 | public class ExampleUnitTest { 13 | @Test 14 | public void addition_isCorrect() { 15 | assertEquals(4, 2 + 2); 16 | } 17 | } -------------------------------------------------------------------------------- /app/src/main/res/layout/layout_loading_list_item.xml: -------------------------------------------------------------------------------- 1 | 2 | 6 | 7 | 11 | 12 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_error_outline_black_24dp.xml: -------------------------------------------------------------------------------- 1 | 7 | 9 | 10 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 14 | -------------------------------------------------------------------------------- /.idea/runConfigurations.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 11 | 12 | -------------------------------------------------------------------------------- /.idea/gradle.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 14 | 15 | -------------------------------------------------------------------------------- /app/src/main/res/layout/layout_search_exhausted.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | 15 | 16 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_mood_bad_black_24dp.xml: -------------------------------------------------------------------------------- 1 | 6 | 9 | 10 | -------------------------------------------------------------------------------- /gradle.properties: -------------------------------------------------------------------------------- 1 | # Project-wide Gradle settings. 2 | # IDE (e.g. Android Studio) users: 3 | # Gradle settings configured through the IDE *will override* 4 | # any settings specified in this file. 5 | # For more details on how to configure your build environment visit 6 | # http://www.gradle.org/docs/current/userguide/build_environment.html 7 | # Specifies the JVM arguments used for the daemon process. 8 | # The setting is particularly useful for tweaking memory settings. 9 | org.gradle.jvmargs=-Xmx1536m 10 | # When configured, Gradle will run in incubating parallel mode. 11 | # This option should only be used with decoupled projects. More details, visit 12 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 13 | # org.gradle.parallel=true 14 | 15 | 16 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/util/VerticalSpacingItemDecorator.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.util; 2 | 3 | import android.graphics.Rect; 4 | import android.support.annotation.NonNull; 5 | import android.support.v7.widget.RecyclerView; 6 | import android.view.View; 7 | 8 | public class VerticalSpacingItemDecorator extends RecyclerView.ItemDecoration { 9 | 10 | private final int verticalSpaceHeight; 11 | 12 | public VerticalSpacingItemDecorator(int verticalSpaceHeight) { 13 | this.verticalSpaceHeight = verticalSpaceHeight; 14 | } 15 | 16 | @Override 17 | public void getItemOffsets(@NonNull Rect outRect, @NonNull View view, @NonNull RecyclerView parent, @NonNull RecyclerView.State state) { 18 | 19 | outRect.top = verticalSpaceHeight; 20 | } 21 | } 22 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # You can control the set of applied configuration files using the 3 | # proguardFiles setting in build.gradle. 4 | # 5 | # For more details, see 6 | # http://developer.android.com/guide/developing/tools/proguard.html 7 | 8 | # If your project uses WebView with JS, uncomment the following 9 | # and specify the fully qualified class name to the JavaScript interface 10 | # class: 11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 12 | # public *; 13 | #} 14 | 15 | # Uncomment this to preserve the line number information for 16 | # debugging stack traces. 17 | #-keepattributes SourceFile,LineNumberTable 18 | 19 | # If you keep the line number information, uncomment this to 20 | # hide the original source file name. 21 | #-renamesourcefileattribute SourceFile 22 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/persistence/Converters.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.persistence; 2 | 3 | import android.arch.persistence.room.TypeConverter; 4 | 5 | import com.google.gson.Gson; 6 | import com.google.gson.reflect.TypeToken; 7 | 8 | import java.lang.reflect.Type; 9 | 10 | public class Converters { 11 | 12 | @TypeConverter 13 | public static String[] fromString(String value){ 14 | Type listType = new TypeToken(){}.getType(); 15 | return new Gson().fromJson(value, listType); 16 | } 17 | 18 | @TypeConverter 19 | public static String fromArrayList(String[] list){ 20 | Gson gson = new Gson(); 21 | String json = gson.toJson(list); 22 | return json; 23 | } 24 | } 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | -------------------------------------------------------------------------------- /app/src/androidTest/java/com/codingwithmitch/foodrecipes/ExampleInstrumentedTest.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes; 2 | 3 | import android.content.Context; 4 | import android.support.test.InstrumentationRegistry; 5 | import android.support.test.runner.AndroidJUnit4; 6 | 7 | import org.junit.Test; 8 | import org.junit.runner.RunWith; 9 | 10 | import static org.junit.Assert.*; 11 | 12 | /** 13 | * Instrumented test, which will execute on an Android device. 14 | * 15 | * @see Testing documentation 16 | */ 17 | @RunWith(AndroidJUnit4.class) 18 | public class ExampleInstrumentedTest { 19 | @Test 20 | public void useAppContext() { 21 | // Context of the app under test. 22 | Context appContext = InstrumentationRegistry.getTargetContext(); 23 | 24 | assertEquals("com.codingwithmitch.foodrecipes", appContext.getPackageName()); 25 | } 26 | } 27 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/requests/RecipeApi.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.requests; 2 | 3 | import android.arch.lifecycle.LiveData; 4 | 5 | import com.codingwithmitch.foodrecipes.requests.responses.ApiResponse; 6 | import com.codingwithmitch.foodrecipes.requests.responses.RecipeResponse; 7 | import com.codingwithmitch.foodrecipes.requests.responses.RecipeSearchResponse; 8 | 9 | import retrofit2.Call; 10 | import retrofit2.http.GET; 11 | import retrofit2.http.Query; 12 | 13 | public interface RecipeApi { 14 | 15 | // SEARCH 16 | @GET("api/search") 17 | LiveData> searchRecipe( 18 | @Query("key") String key, 19 | @Query("q") String query, 20 | @Query("page") String page 21 | ); 22 | 23 | // GET RECIPE REQUEST 24 | @GET("api/get") 25 | LiveData> getRecipe( 26 | @Query("key") String key, 27 | @Query("rId") String recipe_id 28 | ); 29 | } 30 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/requests/responses/RecipeResponse.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.requests.responses; 2 | 3 | import android.support.annotation.NonNull; 4 | import android.support.annotation.Nullable; 5 | 6 | import com.codingwithmitch.foodrecipes.models.Recipe; 7 | import com.google.gson.annotations.Expose; 8 | import com.google.gson.annotations.SerializedName; 9 | 10 | public class RecipeResponse { 11 | 12 | @SerializedName("recipe") 13 | @Expose() 14 | private Recipe recipe; 15 | 16 | @SerializedName("error") 17 | @Expose() 18 | private String error; 19 | 20 | public String getError() { 21 | return error; 22 | } 23 | 24 | @Nullable 25 | public Recipe getRecipe(){ 26 | return recipe; 27 | } 28 | 29 | @Override 30 | public String toString() { 31 | return "RecipeResponse{" + 32 | "recipe=" + recipe + 33 | ", error='" + error + '\'' + 34 | '}'; 35 | } 36 | } 37 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 6 | 7 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_base.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 8 | 12 | 13 | 14 | 15 | 25 | 26 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/viewmodels/RecipeViewModel.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.viewmodels; 2 | 3 | 4 | import android.app.Application; 5 | import android.arch.lifecycle.AndroidViewModel; 6 | import android.arch.lifecycle.LiveData; 7 | import android.support.annotation.NonNull; 8 | 9 | import com.codingwithmitch.foodrecipes.models.Recipe; 10 | import com.codingwithmitch.foodrecipes.repositories.RecipeRepository; 11 | import com.codingwithmitch.foodrecipes.util.Resource; 12 | 13 | 14 | public class RecipeViewModel extends AndroidViewModel { 15 | 16 | private RecipeRepository recipeRepository; 17 | 18 | public RecipeViewModel(@NonNull Application application) { 19 | super(application); 20 | recipeRepository = RecipeRepository.getInstance(application); 21 | } 22 | 23 | public LiveData> searchRecipeApi(String recipeId){ 24 | return recipeRepository.searchRecipesApi(recipeId); 25 | } 26 | } 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/BaseActivity.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes; 2 | 3 | import android.support.constraint.ConstraintLayout; 4 | import android.support.v7.app.AppCompatActivity; 5 | import android.view.View; 6 | import android.widget.FrameLayout; 7 | import android.widget.ProgressBar; 8 | 9 | public abstract class BaseActivity extends AppCompatActivity { 10 | 11 | public ProgressBar mProgressBar; 12 | 13 | @Override 14 | public void setContentView(int layoutResID) { 15 | 16 | ConstraintLayout constraintLayout = (ConstraintLayout) getLayoutInflater().inflate(R.layout.activity_base, null); 17 | FrameLayout frameLayout = constraintLayout.findViewById(R.id.activity_content); 18 | mProgressBar = constraintLayout.findViewById(R.id.progress_bar); 19 | 20 | getLayoutInflater().inflate(layoutResID, frameLayout, true); 21 | super.setContentView(constraintLayout); 22 | } 23 | 24 | public void showProgressBar(boolean visibility){ 25 | mProgressBar.setVisibility(visibility ? View.VISIBLE : View.INVISIBLE); 26 | } 27 | } 28 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/util/Resource.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.util; 2 | 3 | import android.support.annotation.NonNull; 4 | import android.support.annotation.Nullable; 5 | 6 | public class Resource { 7 | 8 | @NonNull 9 | public final Status status; 10 | 11 | @Nullable 12 | public final T data; 13 | 14 | @Nullable 15 | public final String message; 16 | 17 | public Resource(@NonNull Status status, @Nullable T data, @Nullable String message) { 18 | this.status = status; 19 | this.data = data; 20 | this.message = message; 21 | } 22 | 23 | public static Resource success(@NonNull T data) { 24 | return new Resource<>(Status.SUCCESS, data, null); 25 | } 26 | 27 | public static Resource error(@NonNull String msg, @Nullable T data) { 28 | return new Resource<>(Status.ERROR, data, msg); 29 | } 30 | 31 | public static Resource loading(@Nullable T data) { 32 | return new Resource<>(Status.LOADING, data, null); 33 | } 34 | 35 | public enum Status { SUCCESS, ERROR, LOADING} 36 | } -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/persistence/RecipeDatabase.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.persistence; 2 | 3 | import android.arch.persistence.room.Database; 4 | import android.arch.persistence.room.Room; 5 | import android.arch.persistence.room.RoomDatabase; 6 | import android.arch.persistence.room.TypeConverters; 7 | import android.content.Context; 8 | 9 | import com.codingwithmitch.foodrecipes.models.Recipe; 10 | 11 | @Database(entities = {Recipe.class}, version = 1) 12 | @TypeConverters({Converters.class}) 13 | public abstract class RecipeDatabase extends RoomDatabase { 14 | 15 | public static final String DATABASE_NAME = "recipes_db"; 16 | 17 | private static RecipeDatabase instance; 18 | 19 | public static RecipeDatabase getInstance(final Context context){ 20 | if(instance == null){ 21 | instance = Room.databaseBuilder( 22 | context.getApplicationContext(), 23 | RecipeDatabase.class, 24 | DATABASE_NAME 25 | ).build(); 26 | } 27 | return instance; 28 | } 29 | 30 | public abstract RecipeDao getRecipeDao(); 31 | 32 | } 33 | 34 | 35 | 36 | 37 | 38 | 39 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/requests/responses/RecipeSearchResponse.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.requests.responses; 2 | 3 | import android.support.annotation.NonNull; 4 | import android.support.annotation.Nullable; 5 | 6 | import com.codingwithmitch.foodrecipes.models.Recipe; 7 | import com.google.gson.annotations.Expose; 8 | import com.google.gson.annotations.SerializedName; 9 | 10 | import java.util.List; 11 | 12 | public class RecipeSearchResponse { 13 | 14 | @SerializedName("count") 15 | @Expose() 16 | private int count; 17 | 18 | @SerializedName("recipes") 19 | @Expose() 20 | private List recipes; 21 | 22 | @SerializedName("error") 23 | @Expose() 24 | private String error; 25 | 26 | public String getError() { 27 | return error; 28 | } 29 | 30 | public int getCount() { 31 | return count; 32 | } 33 | 34 | @Nullable 35 | public List getRecipes() { 36 | return recipes; 37 | } 38 | 39 | @Override 40 | public String toString() { 41 | return "RecipeSearchResponse{" + 42 | "count=" + count + 43 | ", recipes=" + recipes + 44 | ", error='" + error + '\'' + 45 | '}'; 46 | } 47 | } 48 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/AppExecutors.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes; 2 | 3 | 4 | import android.os.Handler; 5 | import android.os.Looper; 6 | import android.support.annotation.NonNull; 7 | 8 | import java.util.concurrent.Executor; 9 | import java.util.concurrent.Executors; 10 | import java.util.concurrent.ScheduledExecutorService; 11 | 12 | public class AppExecutors { 13 | 14 | private static AppExecutors instance; 15 | 16 | public static AppExecutors getInstance(){ 17 | if(instance == null){ 18 | instance = new AppExecutors(); 19 | } 20 | return instance; 21 | } 22 | 23 | private final Executor mDiskIO = Executors.newSingleThreadExecutor(); 24 | 25 | private final Executor mMainThreadExecutor = new MainThreadExecutor(); 26 | 27 | 28 | public Executor diskIO(){ 29 | return mDiskIO; 30 | } 31 | 32 | public Executor mainThread(){ 33 | return mMainThreadExecutor; 34 | } 35 | 36 | private static class MainThreadExecutor implements Executor{ 37 | 38 | private Handler mainThreadHandler = new Handler(Looper.getMainLooper()); 39 | 40 | @Override 41 | public void execute(@NonNull Runnable command) { 42 | mainThreadHandler.post(command); 43 | } 44 | } 45 | } 46 | -------------------------------------------------------------------------------- /app/src/main/res/layout/layout_category_list_item.xml: -------------------------------------------------------------------------------- 1 | 2 | 8 | 9 | 15 | 16 | 21 | 22 | 30 | 31 | 32 | 33 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/util/Constants.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.util; 2 | 3 | public class Constants { 4 | 5 | // public static final String BASE_URL = "https://www.food2fork.com"; 6 | public static final String BASE_URL = "https://recipesapi.herokuapp.com"; 7 | 8 | // API_KEY is no longer necessary since food2fork has shutdown. This can be empty it doesn't matter. 9 | // public static final String API_KEY = "453556cb475252e7e42d65aa11912447"; 10 | public static final String API_KEY = ""; 11 | 12 | public static final int CONNECTION_TIMEOUT = 10; // 10 seconds 13 | public static final int READ_TIMEOUT = 2; // 2 seconds 14 | public static final int WRITE_TIMEOUT = 2; // 2 seconds 15 | 16 | public static final int RECIPE_REFRESH_TIME = 60 * 60 * 24 * 30; // 30 days (in seconds) 17 | 18 | 19 | public static final String[] DEFAULT_SEARCH_CATEGORIES = 20 | {"Barbeque", "Breakfast", "Chicken", "Beef", "Brunch", "Dinner", "Wine", "Italian"}; 21 | 22 | public static final String[] DEFAULT_SEARCH_CATEGORY_IMAGES = 23 | { 24 | "barbeque", 25 | "breakfast", 26 | "chicken", 27 | "beef", 28 | "brunch", 29 | "dinner", 30 | "wine", 31 | "italian" 32 | }; 33 | } 34 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/persistence/RecipeDao.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.persistence; 2 | 3 | import android.arch.lifecycle.LiveData; 4 | import android.arch.persistence.room.Dao; 5 | import android.arch.persistence.room.Ignore; 6 | import android.arch.persistence.room.Insert; 7 | import android.arch.persistence.room.Query; 8 | 9 | import com.codingwithmitch.foodrecipes.models.Recipe; 10 | 11 | import java.util.List; 12 | 13 | import static android.arch.persistence.room.OnConflictStrategy.IGNORE; 14 | import static android.arch.persistence.room.OnConflictStrategy.REPLACE; 15 | 16 | @Dao 17 | public interface RecipeDao { 18 | 19 | @Insert(onConflict = IGNORE) 20 | long[] insertRecipes(Recipe... recipe); 21 | 22 | @Insert(onConflict = REPLACE) 23 | void insertRecipe(Recipe recipe); 24 | 25 | @Query("UPDATE recipes SET title = :title, publisher = :publisher, image_url = :image_url, social_rank = :social_rank " + 26 | "WHERE recipe_id = :recipe_id") 27 | void updateRecipe(String recipe_id, String title, String publisher, String image_url, float social_rank); 28 | 29 | @Query("SELECT * FROM recipes WHERE title LIKE '%' || :query || '%' OR ingredients LIKE '%' || :query || '%' " + 30 | "ORDER BY social_rank DESC LIMIT (:pageNumber * 30)") 31 | LiveData> searchRecipes(String query, int pageNumber); 32 | 33 | @Query("SELECT * FROM recipes WHERE recipe_id = :recipe_id") 34 | LiveData getRecipe(String recipe_id); 35 | 36 | } 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_recipe_list.xml: -------------------------------------------------------------------------------- 1 | 2 | 9 | 10 | 13 | 14 | 19 | 20 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/util/LiveDataCallAdapter.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.util; 2 | 3 | import android.arch.lifecycle.LiveData; 4 | 5 | import com.codingwithmitch.foodrecipes.requests.responses.ApiResponse; 6 | 7 | import java.io.IOException; 8 | import java.lang.reflect.Type; 9 | 10 | import retrofit2.Call; 11 | import retrofit2.CallAdapter; 12 | import retrofit2.Callback; 13 | import retrofit2.Response; 14 | 15 | public class LiveDataCallAdapter implements CallAdapter>> { 16 | 17 | private Type responseType; 18 | 19 | public LiveDataCallAdapter(Type responseType) { 20 | this.responseType = responseType; 21 | } 22 | 23 | @Override 24 | public Type responseType() { 25 | return responseType; 26 | } 27 | 28 | @Override 29 | public LiveData> adapt(final Call call) { 30 | return new LiveData>(){ 31 | @Override 32 | protected void onActive() { 33 | super.onActive(); 34 | final ApiResponse apiResponse = new ApiResponse(); 35 | if(!call.isExecuted()){ 36 | call.enqueue(new Callback() { 37 | @Override 38 | public void onResponse(Call call, Response response) { 39 | postValue(apiResponse.create(response)); 40 | } 41 | 42 | @Override 43 | public void onFailure(Call call, Throwable t) { 44 | postValue(apiResponse.create(t)); 45 | } 46 | }); 47 | } 48 | 49 | } 50 | }; 51 | } 52 | 53 | } 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/adapters/CategoryViewHolder.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.adapters; 2 | 3 | import android.net.Uri; 4 | import android.support.annotation.NonNull; 5 | import android.support.v7.widget.RecyclerView; 6 | import android.view.View; 7 | import android.widget.TextView; 8 | 9 | import com.bumptech.glide.Glide; 10 | import com.bumptech.glide.RequestManager; 11 | import com.bumptech.glide.request.RequestOptions; 12 | import com.codingwithmitch.foodrecipes.R; 13 | import com.codingwithmitch.foodrecipes.models.Recipe; 14 | 15 | import de.hdodenhof.circleimageview.CircleImageView; 16 | 17 | public class CategoryViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener { 18 | 19 | CircleImageView categoryImage; 20 | TextView categoryTitle; 21 | OnRecipeListener listener; 22 | RequestManager requestManager; 23 | 24 | public CategoryViewHolder(@NonNull View itemView, 25 | OnRecipeListener listener, 26 | RequestManager requestManager) { 27 | super(itemView); 28 | 29 | this.requestManager = requestManager; 30 | this.listener = listener; 31 | categoryImage = itemView.findViewById(R.id.category_image); 32 | categoryTitle = itemView.findViewById(R.id.category_title); 33 | 34 | itemView.setOnClickListener(this); 35 | } 36 | 37 | public void onBind(Recipe recipe){ 38 | 39 | Uri path = Uri.parse("android.resource://com.codingwithmitch.foodrecipes/drawable/" + recipe.getImage_url()); 40 | requestManager 41 | .load(path) 42 | .into(categoryImage); 43 | 44 | categoryTitle.setText(recipe.getTitle()); 45 | } 46 | 47 | @Override 48 | public void onClick(View v) { 49 | listener.onCategoryClick(categoryTitle.getText().toString()); 50 | } 51 | } 52 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/requests/ServiceGenerator.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.requests; 2 | 3 | import com.codingwithmitch.foodrecipes.util.Constants; 4 | import com.codingwithmitch.foodrecipes.util.LiveDataCallAdapter; 5 | import com.codingwithmitch.foodrecipes.util.LiveDataCallAdapterFactory; 6 | 7 | import java.util.concurrent.TimeUnit; 8 | 9 | import okhttp3.OkHttpClient; 10 | import retrofit2.Retrofit; 11 | import retrofit2.converter.gson.GsonConverterFactory; 12 | 13 | import static com.codingwithmitch.foodrecipes.util.Constants.CONNECTION_TIMEOUT; 14 | import static com.codingwithmitch.foodrecipes.util.Constants.READ_TIMEOUT; 15 | import static com.codingwithmitch.foodrecipes.util.Constants.WRITE_TIMEOUT; 16 | 17 | public class ServiceGenerator { 18 | 19 | private static OkHttpClient client = new OkHttpClient.Builder() 20 | 21 | // establish connection to server 22 | .connectTimeout(CONNECTION_TIMEOUT, TimeUnit.SECONDS) 23 | 24 | // time between each byte read from the server 25 | .readTimeout(READ_TIMEOUT, TimeUnit.SECONDS) 26 | 27 | // time between each byte sent to server 28 | .writeTimeout(WRITE_TIMEOUT, TimeUnit.SECONDS) 29 | 30 | .retryOnConnectionFailure(false) 31 | 32 | .build(); 33 | 34 | 35 | private static Retrofit.Builder retrofitBuilder = 36 | new Retrofit.Builder() 37 | .baseUrl(Constants.BASE_URL) 38 | .client(client) 39 | .addCallAdapterFactory(new LiveDataCallAdapterFactory()) 40 | .addConverterFactory(GsonConverterFactory.create()); 41 | 42 | private static Retrofit retrofit = retrofitBuilder.build(); 43 | 44 | private static RecipeApi recipeApi = retrofit.create(RecipeApi.class); 45 | 46 | public static RecipeApi getRecipeApi(){ 47 | return recipeApi; 48 | } 49 | } 50 | -------------------------------------------------------------------------------- /app/src/main/res/drawable-v24/ic_launcher_foreground.xml: -------------------------------------------------------------------------------- 1 | 7 | 12 | 13 | 19 | 22 | 25 | 26 | 27 | 28 | 34 | 35 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | 2 |

Local Database Cache with REST API, Retrofit2, MVVM Architecture

3 |

Watch the app demo.

4 | 5 |
6 | In this course you'll learn how to build a local database cache with SQLite and Room. The cache retrieves data from a REST API using Retrofit2. Architecture is MVVM. 7 |

8 | Here's the specifics of what you will see in the course: 9 |

10 |
    11 |
  1. Caching data for when the network goes offline
    2. 12 |
  2. Reading cached data when the network is down
    3. 13 |
  3. Custom SQLite queries using Room
    4. 14 |
  4. Customizing the cache (how long data will live in the cache)
    5. 15 |
  5. How Retrofit caching works
    6. 16 |
  6. Why SQLite and Room is better for caching than Retrofit
    7. 17 |
  7. How to design a database cache 18 |
      19 |
    • There is no "one size fits all"
      • 20 |
    • Retrofit is better for some things but room is better for others
      • 21 |
    22 |
    8. 23 |
  8. How Glide caching works
    9. 24 |
  9. Glide RecyclerView Preloader (Customizing how many list items get cached)
    10. 25 |
  10. Dealing with Network Errors and slow network speeds
    11. 26 |
  11. OkHttp Network Timeouts
    12. 27 |
  12. Converting Retrofit Calls to LiveData (Call Adapters)
    13. 28 |
  13. And much more...
    14. 29 |
30 |
31 | 32 | Architecture Diagram 33 |

34 |
35 | 36 |
37 |

38 | 39 |

Contributors

40 |
    41 |
  1. 42 | gmiklay
    43 |
      44 |
    1. Converted to AndroidX: branch: pr/1
      2. 45 |
    46 | 47 |
    2. 48 |
49 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/adapters/RecipeViewHolder.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.adapters; 2 | 3 | import android.support.annotation.NonNull; 4 | import android.support.v7.widget.AppCompatImageView; 5 | import android.support.v7.widget.RecyclerView; 6 | import android.view.View; 7 | import android.widget.TextView; 8 | 9 | import com.bumptech.glide.Glide; 10 | import com.bumptech.glide.ListPreloader; 11 | import com.bumptech.glide.RequestManager; 12 | import com.bumptech.glide.request.RequestOptions; 13 | import com.bumptech.glide.util.ViewPreloadSizeProvider; 14 | import com.codingwithmitch.foodrecipes.R; 15 | import com.codingwithmitch.foodrecipes.models.Recipe; 16 | 17 | public class RecipeViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener { 18 | 19 | TextView title, publisher, socialScore; 20 | AppCompatImageView image; 21 | OnRecipeListener onRecipeListener; 22 | RequestManager requestManager; 23 | ViewPreloadSizeProvider viewPreloadSizeProvider; 24 | 25 | public RecipeViewHolder(@NonNull View itemView, 26 | OnRecipeListener onRecipeListener, 27 | RequestManager requestManager, 28 | ViewPreloadSizeProvider preloadSizeProvider) { 29 | super(itemView); 30 | 31 | this.onRecipeListener = onRecipeListener; 32 | this.requestManager = requestManager; 33 | this.viewPreloadSizeProvider = preloadSizeProvider; 34 | 35 | title = itemView.findViewById(R.id.recipe_title); 36 | publisher = itemView.findViewById(R.id.recipe_publisher); 37 | socialScore = itemView.findViewById(R.id.recipe_social_score); 38 | image = itemView.findViewById(R.id.recipe_image); 39 | 40 | itemView.setOnClickListener(this); 41 | } 42 | 43 | public void onBind(Recipe recipe){ 44 | 45 | requestManager 46 | .load(recipe.getImage_url()) 47 | .into(image); 48 | 49 | title.setText(recipe.getTitle()); 50 | publisher.setText(recipe.getPublisher()); 51 | socialScore.setText(String.valueOf(Math.round(recipe.getSocial_rank()))); 52 | 53 | viewPreloadSizeProvider.setView(image); 54 | } 55 | 56 | @Override 57 | public void onClick(View v) { 58 | onRecipeListener.onRecipeClick(getAdapterPosition()); 59 | } 60 | } 61 | 62 | 63 | 64 | 65 | 66 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/util/LiveDataCallAdapterFactory.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.util; 2 | 3 | 4 | import android.arch.lifecycle.LiveData; 5 | 6 | import com.codingwithmitch.foodrecipes.requests.responses.ApiResponse; 7 | 8 | import java.lang.annotation.Annotation; 9 | import java.lang.reflect.ParameterizedType; 10 | import java.lang.reflect.Type; 11 | 12 | import retrofit2.CallAdapter; 13 | import retrofit2.Retrofit; 14 | 15 | public class LiveDataCallAdapterFactory extends CallAdapter.Factory { 16 | 17 | 18 | /** 19 | * This method performs a number of checks and then returns the Response type for the Retrofit requests. 20 | * (@bodyType is the ResponseType. It can be RecipeResponse or RecipeSearchResponse) 21 | * 22 | * CHECK #1) returnType returns LiveData 23 | * CHECK #2) Type LiveData is of ApiResponse.class 24 | * CHECK #3) Make sure ApiResponse is parameterized. AKA: ApiResponse exists. 25 | * 26 | * 27 | */ 28 | @Override 29 | public CallAdapter get(Type returnType, Annotation[] annotations, Retrofit retrofit) { 30 | 31 | // Check #1 32 | // Make sure the CallAdapter is returning a type of LiveData 33 | if(CallAdapter.Factory.getRawType(returnType) != LiveData.class){ 34 | return null; 35 | } 36 | 37 | // Check #2 38 | // Type that LiveData is wrapping 39 | Type observableType = CallAdapter.Factory.getParameterUpperBound(0, (ParameterizedType) returnType); 40 | 41 | // Check if it's of Type ApiResponse 42 | Type rawObservableType = CallAdapter.Factory.getRawType(observableType); 43 | if(rawObservableType != ApiResponse.class){ 44 | throw new IllegalArgumentException("Type must be a defined resource"); 45 | } 46 | 47 | // Check #3 48 | // Check if ApiResponse is parameterized. AKA: Does ApiResponse exists? (must wrap around T) 49 | // FYI: T is either RecipeResponse or T will be a RecipeSearchResponse 50 | if(!(observableType instanceof ParameterizedType)){ 51 | throw new IllegalArgumentException("resource must be parameterized"); 52 | } 53 | 54 | Type bodyType = CallAdapter.Factory.getParameterUpperBound(0, (ParameterizedType) observableType); 55 | return new LiveDataCallAdapter(bodyType); 56 | } 57 | } 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @if "%DEBUG%" == "" @echo off 2 | @rem ########################################################################## 3 | @rem 4 | @rem Gradle startup script for Windows 5 | @rem 6 | @rem ########################################################################## 7 | 8 | @rem Set local scope for the variables with windows NT shell 9 | if "%OS%"=="Windows_NT" setlocal 10 | 11 | set DIRNAME=%~dp0 12 | if "%DIRNAME%" == "" set DIRNAME=. 13 | set APP_BASE_NAME=%~n0 14 | set APP_HOME=%DIRNAME% 15 | 16 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 17 | set DEFAULT_JVM_OPTS= 18 | 19 | @rem Find java.exe 20 | if defined JAVA_HOME goto findJavaFromJavaHome 21 | 22 | set JAVA_EXE=java.exe 23 | %JAVA_EXE% -version >NUL 2>&1 24 | if "%ERRORLEVEL%" == "0" goto init 25 | 26 | echo. 27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 28 | echo. 29 | echo Please set the JAVA_HOME variable in your environment to match the 30 | echo location of your Java installation. 31 | 32 | goto fail 33 | 34 | :findJavaFromJavaHome 35 | set JAVA_HOME=%JAVA_HOME:"=% 36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 37 | 38 | if exist "%JAVA_EXE%" goto init 39 | 40 | echo. 41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 42 | echo. 43 | echo Please set the JAVA_HOME variable in your environment to match the 44 | echo location of your Java installation. 45 | 46 | goto fail 47 | 48 | :init 49 | @rem Get command-line arguments, handling Windows variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | 53 | :win9xME_args 54 | @rem Slurp the command line arguments. 55 | set CMD_LINE_ARGS= 56 | set _SKIP=2 57 | 58 | :win9xME_args_slurp 59 | if "x%~1" == "x" goto execute 60 | 61 | set CMD_LINE_ARGS=%* 62 | 63 | :execute 64 | @rem Setup the command line 65 | 66 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 67 | 68 | @rem Execute Gradle 69 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 70 | 71 | :end 72 | @rem End local scope for the variables with windows NT shell 73 | if "%ERRORLEVEL%"=="0" goto mainEnd 74 | 75 | :fail 76 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 77 | rem the _cmd.exe /c_ return code! 78 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 79 | exit /b 1 80 | 81 | :mainEnd 82 | if "%OS%"=="Windows_NT" endlocal 83 | 84 | :omega 85 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 28 5 | defaultConfig { 6 | applicationId "com.codingwithmitch.foodrecipes" 7 | minSdkVersion 21 8 | targetSdkVersion 28 9 | versionCode 1 10 | versionName "1.0" 11 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 12 | 13 | javaCompileOptions { 14 | annotationProcessorOptions { 15 | arguments = ["room.schemaLocation": "$projectDir/schemas".toString()] 16 | } 17 | } 18 | } 19 | buildTypes { 20 | release { 21 | minifyEnabled false 22 | proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' 23 | } 24 | } 25 | } 26 | 27 | dependencies { 28 | def retrofitVersion = "2.5.0" 29 | def lifecycle_version = "1.1.1" 30 | def supportVersion = "28.0.0" 31 | def glideVersion = "4.8.0" 32 | 33 | implementation fileTree(dir: 'libs', include: ['*.jar']) 34 | implementation "com.android.support:appcompat-v7:$supportVersion" 35 | implementation 'com.android.support.constraint:constraint-layout:1.1.3' 36 | testImplementation 'junit:junit:4.12' 37 | androidTestImplementation 'com.android.support.test:runner:1.0.2' 38 | androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2' 39 | 40 | implementation "com.squareup.retrofit2:retrofit:$retrofitVersion" 41 | 42 | implementation "com.squareup.retrofit2:converter-gson:$retrofitVersion" 43 | 44 | // ViewModel and LiveData 45 | implementation "android.arch.lifecycle:extensions:$lifecycle_version" 46 | 47 | // Cardview 48 | implementation "com.android.support:cardview-v7:$supportVersion" 49 | 50 | // Recyclerview 51 | implementation "com.android.support:recyclerview-v7:$supportVersion" 52 | 53 | // Design support 54 | implementation "com.android.support:design:$supportVersion" 55 | 56 | // Glide 57 | implementation "com.github.bumptech.glide:glide:$glideVersion" 58 | annotationProcessor "com.github.bumptech.glide:compiler:$glideVersion" 59 | 60 | // Glide RecyclerView Preloader 61 | implementation ("com.github.bumptech.glide:recyclerview-integration:$glideVersion") { 62 | // Excludes the support library because it's already included by Glide. 63 | transitive = false 64 | } 65 | 66 | implementation 'de.hdodenhof:circleimageview:3.0.0' 67 | 68 | // Room 69 | implementation "android.arch.persistence.room:runtime:$lifecycle_version" 70 | annotationProcessor "android.arch.persistence.room:compiler:$lifecycle_version" 71 | } 72 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_recipe.xml: -------------------------------------------------------------------------------- 1 | 2 | 8 | 9 | 13 | 14 | 15 | 20 | 21 | 30 | 31 | 32 | 40 | 41 | 50 | 51 | 60 | 61 | 62 | 63 | 64 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | -------------------------------------------------------------------------------- /app/src/main/res/layout/layout_recipe_list_item.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 8 | 13 | 14 | 18 | 19 | 25 | 26 | 27 | 32 | 33 | 39 | 40 | 45 | 46 | 53 | 54 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/requests/responses/ApiResponse.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.requests.responses; 2 | 3 | 4 | import java.io.IOException; 5 | 6 | import retrofit2.Response; 7 | 8 | import static com.codingwithmitch.foodrecipes.viewmodels.RecipeListViewModel.QUERY_EXHAUSTED; 9 | 10 | 11 | /** 12 | * Generic class for handling responses from Retrofit 13 | * @param 14 | */ 15 | public class ApiResponse { 16 | 17 | public ApiResponse create(Throwable error){ 18 | return new ApiErrorResponse<>(error.getMessage().equals("") ? error.getMessage() : "Unknown error\nCheck network connection"); 19 | } 20 | 21 | public ApiResponse create(Response response){ 22 | 23 | if(response.isSuccessful()){ 24 | T body = response.body(); 25 | 26 | if(body instanceof RecipeSearchResponse){ 27 | if(!CheckRecipeApiKey.isRecipeApiKeyValid((RecipeSearchResponse)body)){ 28 | String errorMsg = "Api key is invalid or expired."; 29 | return new ApiErrorResponse<>(errorMsg); 30 | } 31 | if(((RecipeSearchResponse) body).getCount() == 0){ 32 | // query is exhausted 33 | return new ApiErrorResponse<>(QUERY_EXHAUSTED); 34 | } 35 | } 36 | 37 | if(body instanceof RecipeResponse){ 38 | if(!CheckRecipeApiKey.isRecipeApiKeyValid((RecipeResponse)body)){ 39 | String errorMsg = "Api key is invalid or expired."; 40 | return new ApiErrorResponse<>(errorMsg); 41 | } 42 | } 43 | 44 | if(body == null || response.code() == 204){ // 204 is empty response 45 | return new ApiEmptyResponse<>(); 46 | } 47 | else{ 48 | return new ApiSuccessResponse<>(body); 49 | } 50 | } 51 | else{ 52 | String errorMsg = ""; 53 | try { 54 | errorMsg = response.errorBody().string(); 55 | } catch (IOException e) { 56 | e.printStackTrace(); 57 | errorMsg = response.message(); 58 | } 59 | return new ApiErrorResponse<>(errorMsg); 60 | } 61 | } 62 | 63 | /** 64 | * Generic success response from api 65 | * @param 66 | */ 67 | public class ApiSuccessResponse extends ApiResponse { 68 | 69 | private T body; 70 | 71 | ApiSuccessResponse(T body) { 72 | this.body = body; 73 | } 74 | 75 | public T getBody() { 76 | return body; 77 | } 78 | 79 | } 80 | 81 | /** 82 | * Generic Error response from API 83 | * @param 84 | */ 85 | public class ApiErrorResponse extends ApiResponse { 86 | 87 | private String errorMessage; 88 | 89 | ApiErrorResponse(String errorMessage) { 90 | this.errorMessage = errorMessage; 91 | } 92 | 93 | public String getErrorMessage() { 94 | return errorMessage; 95 | } 96 | 97 | } 98 | 99 | 100 | /** 101 | * separate class for HTTP 204 resposes so that we can make ApiSuccessResponse's body non-null. 102 | */ 103 | public class ApiEmptyResponse extends ApiResponse { } 104 | 105 | } 106 | 107 | 108 | 109 | 110 | 111 | 112 | 113 | 114 | 115 | 116 | 117 | 118 | 119 | 120 | 121 | 122 | 123 | 124 | 125 | 126 | 127 | -------------------------------------------------------------------------------- /.idea/codeStyles/Project.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 |
7 | 8 | 9 | 10 | xmlns:android 11 | 12 | ^$ 13 | 14 | 15 | 16 |
17 |
18 | 19 | 20 | 21 | xmlns:.* 22 | 23 | ^$ 24 | 25 | 26 | BY_NAME 27 | 28 |
29 |
30 | 31 | 32 | 33 | .*:id 34 | 35 | http://schemas.android.com/apk/res/android 36 | 37 | 38 | 39 |
40 |
41 | 42 | 43 | 44 | .*:name 45 | 46 | http://schemas.android.com/apk/res/android 47 | 48 | 49 | 50 |
51 |
52 | 53 | 54 | 55 | name 56 | 57 | ^$ 58 | 59 | 60 | 61 |
62 |
63 | 64 | 65 | 66 | style 67 | 68 | ^$ 69 | 70 | 71 | 72 |
73 |
74 | 75 | 76 | 77 | .* 78 | 79 | ^$ 80 | 81 | 82 | BY_NAME 83 | 84 |
85 |
86 | 87 | 88 | 89 | .* 90 | 91 | http://schemas.android.com/apk/res/android 92 | 93 | 94 | ANDROID_ATTRIBUTE_ORDER 95 | 96 |
97 |
98 | 99 | 100 | 101 | .* 102 | 103 | .* 104 | 105 | 106 | BY_NAME 107 | 108 |
109 | 110 | 111 | 112 | 113 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/util/HorizontalDottedProgress.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.util; 2 | 3 | import android.content.Context; 4 | import android.graphics.Canvas; 5 | import android.graphics.Color; 6 | import android.graphics.Paint; 7 | import android.util.AttributeSet; 8 | import android.util.Log; 9 | import android.view.View; 10 | import android.view.animation.Animation; 11 | import android.view.animation.LinearInterpolator; 12 | import android.view.animation.Transformation; 13 | 14 | public class HorizontalDottedProgress extends View { 15 | 16 | //actual dot radius 17 | private int mDotRadius = 5; 18 | 19 | //Bounced Dot Radius 20 | private int mBounceDotRadius = 8; 21 | 22 | //to get identified in which position dot has to bounce 23 | private int mDotPosition; 24 | 25 | //specify how many dots you need in a progressbar 26 | private int mDotAmount = 10; 27 | 28 | public HorizontalDottedProgress(Context context) { 29 | super(context); 30 | } 31 | 32 | public HorizontalDottedProgress(Context context, AttributeSet attrs) { 33 | super(context, attrs); 34 | } 35 | 36 | public HorizontalDottedProgress(Context context, AttributeSet attrs, int defStyleAttr) { 37 | super(context, attrs, defStyleAttr); 38 | } 39 | 40 | //Method to draw your customized dot on the canvas 41 | @Override 42 | protected void onDraw(Canvas canvas) { 43 | super.onDraw(canvas); 44 | 45 | Paint paint = new Paint(); 46 | 47 | //set the color for the dot that you want to draw 48 | paint.setColor(Color.parseColor("#fd583f")); 49 | 50 | //function to create dot 51 | createDot(canvas,paint); 52 | } 53 | 54 | @Override 55 | protected void onAttachedToWindow() { 56 | super.onAttachedToWindow(); 57 | //Animation called when attaching to the window, i.e to your screen 58 | startAnimation(); 59 | } 60 | 61 | private void createDot(Canvas canvas, Paint paint) { 62 | 63 | //here i have setted progress bar with 10 dots , so repeat and wnen i = mDotPosition then increase the radius of dot i.e mBounceDotRadius 64 | for(int i = 0; i < mDotAmount; i++ ){ 65 | if(i == mDotPosition){ 66 | canvas.drawCircle(10+(i*20), mBounceDotRadius, mBounceDotRadius, paint); 67 | }else { 68 | canvas.drawCircle(10+(i*20), mBounceDotRadius, mDotRadius, paint); 69 | } 70 | } 71 | 72 | 73 | } 74 | 75 | @Override 76 | protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 77 | super.onMeasure(widthMeasureSpec, heightMeasureSpec); 78 | int width; 79 | int height; 80 | 81 | //calculate the view width 82 | int calculatedWidth = (20*9); 83 | 84 | width = calculatedWidth; 85 | height = (mBounceDotRadius*2); 86 | 87 | 88 | 89 | //MUST CALL THIS 90 | setMeasuredDimension(width, height); 91 | } 92 | 93 | private void startAnimation() { 94 | BounceAnimation bounceAnimation = new BounceAnimation(); 95 | bounceAnimation.setDuration(100); 96 | bounceAnimation.setRepeatCount(Animation.INFINITE); 97 | bounceAnimation.setInterpolator(new LinearInterpolator()); 98 | bounceAnimation.setAnimationListener(new Animation.AnimationListener() { 99 | @Override 100 | public void onAnimationStart(Animation animation) { 101 | 102 | } 103 | 104 | @Override 105 | public void onAnimationEnd(Animation animation) { 106 | 107 | } 108 | 109 | @Override 110 | public void onAnimationRepeat(Animation animation) { 111 | mDotPosition++; 112 | //when mDotPosition == mDotAmount , then start again applying animation from 0th positon , i.e mDotPosition = 0; 113 | if (mDotPosition == mDotAmount) { 114 | mDotPosition = 0; 115 | } 116 | Log.d("INFOMETHOD","----On Animation Repeat----"); 117 | 118 | } 119 | }); 120 | startAnimation(bounceAnimation); 121 | } 122 | 123 | 124 | private class BounceAnimation extends Animation { 125 | @Override 126 | protected void applyTransformation(float interpolatedTime, Transformation t) { 127 | super.applyTransformation(interpolatedTime, t); 128 | //call invalidate to redraw your view againg. 129 | invalidate(); 130 | } 131 | } 132 | } -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/models/Recipe.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.models; 2 | 3 | 4 | import android.arch.persistence.room.ColumnInfo; 5 | import android.arch.persistence.room.Entity; 6 | import android.arch.persistence.room.PrimaryKey; 7 | import android.os.Parcel; 8 | import android.os.Parcelable; 9 | import android.support.annotation.NonNull; 10 | 11 | import java.util.Arrays; 12 | 13 | @Entity(tableName = "recipes") 14 | public class Recipe implements Parcelable{ 15 | 16 | @PrimaryKey 17 | @NonNull 18 | private String recipe_id; 19 | 20 | @ColumnInfo(name = "title") 21 | private String title; 22 | 23 | @ColumnInfo(name = "publisher") 24 | private String publisher; 25 | 26 | @ColumnInfo(name = "image_url") 27 | private String image_url; 28 | 29 | @ColumnInfo(name = "social_rank") 30 | private float social_rank; 31 | 32 | @ColumnInfo(name = "ingredients") 33 | private String[] ingredients; 34 | 35 | @ColumnInfo(name = "timestamp") 36 | private int timestamp; 37 | 38 | 39 | public Recipe(@NonNull String recipe_id, String title, String publisher, String image_url, 40 | float social_rank, String[] ingredients, int timestamp) { 41 | this.recipe_id = recipe_id; 42 | this.title = title; 43 | this.publisher = publisher; 44 | this.image_url = image_url; 45 | this.social_rank = social_rank; 46 | this.ingredients = ingredients; 47 | this.timestamp = timestamp; 48 | } 49 | 50 | public Recipe() { 51 | } 52 | 53 | protected Recipe(Parcel in) { 54 | recipe_id = in.readString(); 55 | title = in.readString(); 56 | publisher = in.readString(); 57 | image_url = in.readString(); 58 | social_rank = in.readFloat(); 59 | ingredients = in.createStringArray(); 60 | timestamp = in.readInt(); 61 | } 62 | 63 | @Override 64 | public void writeToParcel(Parcel dest, int flags) { 65 | dest.writeString(recipe_id); 66 | dest.writeString(title); 67 | dest.writeString(publisher); 68 | dest.writeString(image_url); 69 | dest.writeFloat(social_rank); 70 | dest.writeStringArray(ingredients); 71 | dest.writeInt(timestamp); 72 | } 73 | 74 | @Override 75 | public int describeContents() { 76 | return 0; 77 | } 78 | 79 | public static final Creator CREATOR = new Creator() { 80 | @Override 81 | public Recipe createFromParcel(Parcel in) { 82 | return new Recipe(in); 83 | } 84 | 85 | @Override 86 | public Recipe[] newArray(int size) { 87 | return new Recipe[size]; 88 | } 89 | }; 90 | 91 | public int getTimestamp() { 92 | return timestamp; 93 | } 94 | 95 | public void setTimestamp(int timestamp) { 96 | this.timestamp = timestamp; 97 | } 98 | 99 | public String getTitle() { 100 | return title; 101 | } 102 | 103 | public void setTitle(String title) { 104 | this.title = title; 105 | } 106 | 107 | public String getPublisher() { 108 | return publisher; 109 | } 110 | 111 | public void setPublisher(String publisher) { 112 | this.publisher = publisher; 113 | } 114 | 115 | public String[] getIngredients() { 116 | return ingredients; 117 | } 118 | 119 | public void setIngredients(String[] ingredients) { 120 | this.ingredients = ingredients; 121 | } 122 | 123 | public String getImage_url() { 124 | return image_url; 125 | } 126 | 127 | public void setImage_url(String image_url) { 128 | this.image_url = image_url; 129 | } 130 | 131 | public float getSocial_rank() { 132 | return social_rank; 133 | } 134 | 135 | public void setSocial_rank(float social_rank) { 136 | this.social_rank = social_rank; 137 | } 138 | 139 | public String getRecipe_id() { 140 | return recipe_id; 141 | } 142 | 143 | public void setRecipe_id(String recipe_id) { 144 | this.recipe_id = recipe_id; 145 | } 146 | 147 | @Override 148 | public String toString() { 149 | return "Recipe{" + 150 | "recipe_id='" + recipe_id + '\'' + 151 | ", title='" + title + '\'' + 152 | ", publisher='" + publisher + '\'' + 153 | ", image_url='" + image_url + '\'' + 154 | ", social_rank=" + social_rank + 155 | ", ingredients=" + Arrays.toString(ingredients) + 156 | ", timestamp=" + timestamp + 157 | '}'; 158 | } 159 | } 160 | 161 | 162 | 163 | 164 | 165 | 166 | 167 | 168 | 169 | 170 | 171 | 172 | 173 | 174 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env sh 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Attempt to set APP_HOME 10 | # Resolve links: $0 may be a link 11 | PRG="$0" 12 | # Need this for relative symlinks. 13 | while [ -h "$PRG" ] ; do 14 | ls=`ls -ld "$PRG"` 15 | link=`expr "$ls" : '.*-> \(.*\)$'` 16 | if expr "$link" : '/.*' > /dev/null; then 17 | PRG="$link" 18 | else 19 | PRG=`dirname "$PRG"`"/$link" 20 | fi 21 | done 22 | SAVED="`pwd`" 23 | cd "`dirname \"$PRG\"`/" >/dev/null 24 | APP_HOME="`pwd -P`" 25 | cd "$SAVED" >/dev/null 26 | 27 | APP_NAME="Gradle" 28 | APP_BASE_NAME=`basename "$0"` 29 | 30 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 31 | DEFAULT_JVM_OPTS="" 32 | 33 | # Use the maximum available, or set MAX_FD != -1 to use that value. 34 | MAX_FD="maximum" 35 | 36 | warn () { 37 | echo "$*" 38 | } 39 | 40 | die () { 41 | echo 42 | echo "$*" 43 | echo 44 | exit 1 45 | } 46 | 47 | # OS specific support (must be 'true' or 'false'). 48 | cygwin=false 49 | msys=false 50 | darwin=false 51 | nonstop=false 52 | case "`uname`" in 53 | CYGWIN* ) 54 | cygwin=true 55 | ;; 56 | Darwin* ) 57 | darwin=true 58 | ;; 59 | MINGW* ) 60 | msys=true 61 | ;; 62 | NONSTOP* ) 63 | nonstop=true 64 | ;; 65 | esac 66 | 67 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 68 | 69 | # Determine the Java command to use to start the JVM. 70 | if [ -n "$JAVA_HOME" ] ; then 71 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 72 | # IBM's JDK on AIX uses strange locations for the executables 73 | JAVACMD="$JAVA_HOME/jre/sh/java" 74 | else 75 | JAVACMD="$JAVA_HOME/bin/java" 76 | fi 77 | if [ ! -x "$JAVACMD" ] ; then 78 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 79 | 80 | Please set the JAVA_HOME variable in your environment to match the 81 | location of your Java installation." 82 | fi 83 | else 84 | JAVACMD="java" 85 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 86 | 87 | Please set the JAVA_HOME variable in your environment to match the 88 | location of your Java installation." 89 | fi 90 | 91 | # Increase the maximum file descriptors if we can. 92 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then 93 | MAX_FD_LIMIT=`ulimit -H -n` 94 | if [ $? -eq 0 ] ; then 95 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 96 | MAX_FD="$MAX_FD_LIMIT" 97 | fi 98 | ulimit -n $MAX_FD 99 | if [ $? -ne 0 ] ; then 100 | warn "Could not set maximum file descriptor limit: $MAX_FD" 101 | fi 102 | else 103 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 104 | fi 105 | fi 106 | 107 | # For Darwin, add options to specify how the application appears in the dock 108 | if $darwin; then 109 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 110 | fi 111 | 112 | # For Cygwin, switch paths to Windows format before running java 113 | if $cygwin ; then 114 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 115 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 116 | JAVACMD=`cygpath --unix "$JAVACMD"` 117 | 118 | # We build the pattern for arguments to be converted via cygpath 119 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 120 | SEP="" 121 | for dir in $ROOTDIRSRAW ; do 122 | ROOTDIRS="$ROOTDIRS$SEP$dir" 123 | SEP="|" 124 | done 125 | OURCYGPATTERN="(^($ROOTDIRS))" 126 | # Add a user-defined pattern to the cygpath arguments 127 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 128 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 129 | fi 130 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 131 | i=0 132 | for arg in "$@" ; do 133 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 134 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 135 | 136 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 137 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 138 | else 139 | eval `echo args$i`="\"$arg\"" 140 | fi 141 | i=$((i+1)) 142 | done 143 | case $i in 144 | (0) set -- ;; 145 | (1) set -- "$args0" ;; 146 | (2) set -- "$args0" "$args1" ;; 147 | (3) set -- "$args0" "$args1" "$args2" ;; 148 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 149 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 150 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 151 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 152 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 153 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 154 | esac 155 | fi 156 | 157 | # Escape application args 158 | save () { 159 | for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done 160 | echo " " 161 | } 162 | APP_ARGS=$(save "$@") 163 | 164 | # Collect all arguments for the java command, following the shell quoting and substitution rules 165 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS" 166 | 167 | # by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong 168 | if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then 169 | cd "$(dirname "$0")" 170 | fi 171 | 172 | exec "$JAVACMD" "$@" 173 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/RecipeActivity.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes; 2 | 3 | import android.arch.lifecycle.Observer; 4 | import android.arch.lifecycle.ViewModelProviders; 5 | import android.os.Bundle; 6 | import android.support.annotation.Nullable; 7 | import android.support.v7.widget.AppCompatImageView; 8 | import android.util.Log; 9 | import android.view.View; 10 | import android.view.ViewGroup; 11 | import android.widget.LinearLayout; 12 | import android.widget.ScrollView; 13 | import android.widget.TextView; 14 | 15 | 16 | import com.bumptech.glide.Glide; 17 | import com.bumptech.glide.request.RequestOptions; 18 | import com.codingwithmitch.foodrecipes.models.Recipe; 19 | import com.codingwithmitch.foodrecipes.util.Resource; 20 | import com.codingwithmitch.foodrecipes.viewmodels.RecipeViewModel; 21 | 22 | public class RecipeActivity extends BaseActivity { 23 | 24 | private static final String TAG = "RecipeActivity"; 25 | 26 | // UI components 27 | private AppCompatImageView mRecipeImage; 28 | private TextView mRecipeTitle, mRecipeRank; 29 | private LinearLayout mRecipeIngredientsContainer; 30 | private ScrollView mScrollView; 31 | 32 | private RecipeViewModel mRecipeViewModel; 33 | 34 | 35 | @Override 36 | protected void onCreate(@Nullable Bundle savedInstanceState) { 37 | super.onCreate(savedInstanceState); 38 | setContentView(R.layout.activity_recipe); 39 | mRecipeImage = findViewById(R.id.recipe_image); 40 | mRecipeTitle = findViewById(R.id.recipe_title); 41 | mRecipeRank = findViewById(R.id.recipe_social_score); 42 | mRecipeIngredientsContainer = findViewById(R.id.ingredients_container); 43 | mScrollView = findViewById(R.id.parent); 44 | 45 | mRecipeViewModel = ViewModelProviders.of(this).get(RecipeViewModel.class); 46 | 47 | getIncomingIntent(); 48 | } 49 | 50 | private void getIncomingIntent(){ 51 | if(getIntent().hasExtra("recipe")){ 52 | Recipe recipe = getIntent().getParcelableExtra("recipe"); 53 | Log.d(TAG, "getIncomingIntent: " + recipe.getTitle()); 54 | subscribeObservers(recipe.getRecipe_id()); 55 | } 56 | } 57 | 58 | private void subscribeObservers(final String recipeId){ 59 | mRecipeViewModel.searchRecipeApi(recipeId).observe(this, new Observer>() { 60 | @Override 61 | public void onChanged(@Nullable Resource recipeResource) { 62 | if(recipeResource != null){ 63 | if(recipeResource.data != null){ 64 | switch (recipeResource.status){ 65 | 66 | case LOADING:{ 67 | showProgressBar(true); 68 | break; 69 | } 70 | 71 | case ERROR:{ 72 | Log.e(TAG, "onChanged: status: ERROR, Recipe: " + recipeResource.data.getTitle() ); 73 | Log.e(TAG, "onChanged: ERROR message: " + recipeResource.message ); 74 | showParent();showProgressBar(false); 75 | setRecipeProperties(recipeResource.data); 76 | break; 77 | } 78 | 79 | case SUCCESS:{ 80 | Log.d(TAG, "onChanged: cache has been refreshed."); 81 | Log.d(TAG, "onChanged: status: SUCCESS, Recipe: " + recipeResource.data.getTitle()); 82 | showParent(); 83 | showProgressBar(false); 84 | setRecipeProperties(recipeResource.data); 85 | break; 86 | } 87 | } 88 | } 89 | } 90 | } 91 | }); 92 | } 93 | 94 | private void setRecipeProperties(Recipe recipe){ 95 | if(recipe != null){ 96 | RequestOptions options = new RequestOptions() 97 | .placeholder(R.drawable.white_background) 98 | .error(R.drawable.white_background); 99 | 100 | Glide.with(this) 101 | .setDefaultRequestOptions(options) 102 | .load(recipe.getImage_url()) 103 | .into(mRecipeImage); 104 | 105 | mRecipeTitle.setText(recipe.getTitle()); 106 | mRecipeRank.setText(String.valueOf(Math.round(recipe.getSocial_rank()))); 107 | 108 | setIngredients(recipe); 109 | } 110 | } 111 | 112 | private void setIngredients(Recipe recipe){ 113 | mRecipeIngredientsContainer.removeAllViews(); 114 | 115 | if(recipe.getIngredients() != null){ 116 | for(String ingredient: recipe.getIngredients()){ 117 | TextView textView = new TextView(this); 118 | textView.setText(ingredient); 119 | textView.setTextSize(15); 120 | textView.setLayoutParams( 121 | new LinearLayout.LayoutParams( 122 | ViewGroup.LayoutParams.WRAP_CONTENT, 123 | ViewGroup.LayoutParams.WRAP_CONTENT)); 124 | mRecipeIngredientsContainer.addView(textView); 125 | } 126 | } 127 | else{ 128 | TextView textView = new TextView(this); 129 | textView.setText("Error retrieving ingredients.\nCheck network connection."); 130 | textView.setTextSize(15); 131 | textView.setLayoutParams( 132 | new LinearLayout.LayoutParams( 133 | ViewGroup.LayoutParams.WRAP_CONTENT, 134 | ViewGroup.LayoutParams.WRAP_CONTENT)); 135 | mRecipeIngredientsContainer.addView(textView); 136 | } 137 | } 138 | 139 | 140 | private void showParent(){ 141 | mScrollView.setVisibility(View.VISIBLE); 142 | } 143 | } 144 | 145 | 146 | 147 | 148 | 149 | 150 | 151 | 152 | 153 | 154 | 155 | 156 | 157 | 158 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_launcher_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | 120 | 125 | 130 | 135 | 140 | 145 | 150 | 155 | 160 | 165 | 170 | 171 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/viewmodels/RecipeListViewModel.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.viewmodels; 2 | 3 | 4 | import android.app.Application; 5 | import android.arch.lifecycle.AndroidViewModel; 6 | import android.arch.lifecycle.LiveData; 7 | import android.arch.lifecycle.MediatorLiveData; 8 | import android.arch.lifecycle.MutableLiveData; 9 | import android.arch.lifecycle.Observer; 10 | import android.support.annotation.NonNull; 11 | import android.support.annotation.Nullable; 12 | import android.util.Log; 13 | 14 | 15 | import com.codingwithmitch.foodrecipes.models.Recipe; 16 | import com.codingwithmitch.foodrecipes.repositories.RecipeRepository; 17 | import com.codingwithmitch.foodrecipes.requests.responses.RecipeSearchResponse; 18 | import com.codingwithmitch.foodrecipes.util.NetworkBoundResource; 19 | import com.codingwithmitch.foodrecipes.util.Resource; 20 | 21 | import java.util.List; 22 | 23 | public class RecipeListViewModel extends AndroidViewModel { 24 | 25 | private static final String TAG = "RecipeListViewModel"; 26 | 27 | public static final String QUERY_EXHAUSTED = "No more results."; 28 | public enum ViewState {CATEGORIES, RECIPES} 29 | 30 | private MutableLiveData viewState; 31 | private MediatorLiveData>> recipes = new MediatorLiveData<>(); 32 | private RecipeRepository recipeRepository; 33 | 34 | // query extras 35 | private boolean isQueryExhausted; 36 | private boolean isPerformingQuery; 37 | private int pageNumber; 38 | private String query; 39 | private boolean cancelRequest; 40 | private long requestStartTime; 41 | 42 | public RecipeListViewModel(@NonNull Application application) { 43 | super(application); 44 | recipeRepository = RecipeRepository.getInstance(application); 45 | init(); 46 | 47 | } 48 | 49 | private void init(){ 50 | if(viewState == null){ 51 | viewState = new MutableLiveData<>(); 52 | viewState.setValue(ViewState.CATEGORIES); 53 | } 54 | } 55 | public LiveData getViewstate(){ 56 | return viewState; 57 | } 58 | 59 | public LiveData>> getRecipes(){ 60 | return recipes; 61 | } 62 | 63 | public int getPageNumber(){ 64 | return pageNumber; 65 | } 66 | 67 | public void setViewCategories(){ 68 | viewState.setValue(ViewState.CATEGORIES); 69 | } 70 | 71 | public void searchRecipesApi(String query, int pageNumber){ 72 | if(!isPerformingQuery){ 73 | if(pageNumber == 0){ 74 | pageNumber = 1; 75 | } 76 | this.pageNumber = pageNumber; 77 | this.query = query; 78 | isQueryExhausted = false; 79 | executeSearch(); 80 | } 81 | } 82 | 83 | public void searchNextPage(){ 84 | if(!isQueryExhausted && !isPerformingQuery){ 85 | pageNumber++; 86 | executeSearch(); 87 | } 88 | } 89 | 90 | private void executeSearch(){ 91 | requestStartTime = System.currentTimeMillis(); 92 | cancelRequest = false; 93 | isPerformingQuery = true; 94 | viewState.setValue(ViewState.RECIPES); 95 | final LiveData>> repositorySource = recipeRepository.searchRecipesApi(query, pageNumber); 96 | recipes.addSource(repositorySource, new Observer>>() { 97 | @Override 98 | public void onChanged(@Nullable Resource> listResource) { 99 | if(!cancelRequest){ 100 | if(listResource != null){ 101 | if(listResource.status == Resource.Status.SUCCESS){ 102 | Log.d(TAG, "onChanged: REQUEST TIME: " + (System.currentTimeMillis() - requestStartTime) / 1000 + " seconds."); 103 | Log.d(TAG, "onChanged: page number: " + pageNumber); 104 | Log.d(TAG, "onChanged: " + listResource.data); 105 | 106 | isPerformingQuery = false; 107 | if(listResource.data != null){ 108 | if(listResource.data.size() == 0 ){ 109 | Log.d(TAG, "onChanged: query is exhausted..."); 110 | recipes.setValue( 111 | new Resource>( 112 | Resource.Status.ERROR, 113 | listResource.data, 114 | QUERY_EXHAUSTED 115 | ) 116 | ); 117 | isQueryExhausted = true; 118 | } 119 | } 120 | recipes.removeSource(repositorySource); 121 | } 122 | else if(listResource.status == Resource.Status.ERROR){ 123 | Log.d(TAG, "onChanged: REQUEST TIME: " + (System.currentTimeMillis() - requestStartTime) / 1000 + " seconds."); 124 | isPerformingQuery = false; 125 | if(listResource.message.equals(QUERY_EXHAUSTED)){ 126 | isQueryExhausted = true; 127 | } 128 | recipes.removeSource(repositorySource); 129 | } 130 | recipes.setValue(listResource); 131 | } 132 | else{ 133 | recipes.removeSource(repositorySource); 134 | } 135 | } 136 | else{ 137 | recipes.removeSource(repositorySource); 138 | } 139 | } 140 | }); 141 | } 142 | 143 | public void cancelSearchRequest(){ 144 | if(isPerformingQuery){ 145 | Log.d(TAG, "cancelSearchRequest: canceling the search request."); 146 | cancelRequest = true; 147 | isPerformingQuery = false; 148 | pageNumber = 1; 149 | } 150 | } 151 | } 152 | 153 | 154 | 155 | 156 | 157 | 158 | 159 | 160 | 161 | 162 | 163 | 164 | 165 | 166 | 167 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/repositories/RecipeRepository.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.repositories; 2 | 3 | import android.arch.lifecycle.LiveData; 4 | import android.content.Context; 5 | import android.support.annotation.NonNull; 6 | import android.support.annotation.Nullable; 7 | import android.util.Log; 8 | 9 | import com.codingwithmitch.foodrecipes.AppExecutors; 10 | import com.codingwithmitch.foodrecipes.models.Recipe; 11 | import com.codingwithmitch.foodrecipes.persistence.RecipeDao; 12 | import com.codingwithmitch.foodrecipes.persistence.RecipeDatabase; 13 | import com.codingwithmitch.foodrecipes.requests.ServiceGenerator; 14 | import com.codingwithmitch.foodrecipes.requests.responses.ApiResponse; 15 | import com.codingwithmitch.foodrecipes.requests.responses.RecipeResponse; 16 | import com.codingwithmitch.foodrecipes.requests.responses.RecipeSearchResponse; 17 | import com.codingwithmitch.foodrecipes.util.Constants; 18 | import com.codingwithmitch.foodrecipes.util.NetworkBoundResource; 19 | import com.codingwithmitch.foodrecipes.util.Resource; 20 | 21 | import java.util.List; 22 | 23 | public class RecipeRepository { 24 | 25 | private static final String TAG = "RecipeRepository"; 26 | 27 | private static RecipeRepository instance; 28 | private RecipeDao recipeDao; 29 | 30 | public static RecipeRepository getInstance(Context context){ 31 | if(instance == null){ 32 | instance = new RecipeRepository(context); 33 | } 34 | return instance; 35 | } 36 | 37 | 38 | private RecipeRepository(Context context) { 39 | recipeDao = RecipeDatabase.getInstance(context).getRecipeDao(); 40 | } 41 | 42 | 43 | public LiveData>> searchRecipesApi(final String query, final int pageNumber){ 44 | return new NetworkBoundResource, RecipeSearchResponse>(AppExecutors.getInstance()){ 45 | 46 | @Override 47 | protected void saveCallResult(@NonNull RecipeSearchResponse item) { 48 | 49 | if(item.getRecipes() != null){ // recipe list will be null if the api key is expired 50 | // Log.d(TAG, "saveCallResult: recipe response: " + item.toString()); 51 | 52 | Recipe[] recipes = new Recipe[item.getRecipes().size()]; 53 | 54 | int index = 0; 55 | for(long rowid: recipeDao.insertRecipes((Recipe[]) (item.getRecipes().toArray(recipes)))){ 56 | if(rowid == -1){ 57 | Log.d(TAG, "saveCallResult: CONFLICT... This recipe is already in the cache"); 58 | // if the recipe already exists... I don't want to set the ingredients or timestamp b/c 59 | // they will be erased 60 | recipeDao.updateRecipe( 61 | recipes[index].getRecipe_id(), 62 | recipes[index].getTitle(), 63 | recipes[index].getPublisher(), 64 | recipes[index].getImage_url(), 65 | recipes[index].getSocial_rank() 66 | ); 67 | } 68 | index++; 69 | } 70 | } 71 | } 72 | 73 | @Override 74 | protected boolean shouldFetch(@Nullable List data) { 75 | return true; 76 | } 77 | 78 | @NonNull 79 | @Override 80 | protected LiveData> loadFromDb() { 81 | return recipeDao.searchRecipes(query, pageNumber); 82 | } 83 | 84 | @NonNull 85 | @Override 86 | protected LiveData> createCall() { 87 | return ServiceGenerator.getRecipeApi() 88 | .searchRecipe( 89 | Constants.API_KEY, 90 | query, 91 | String.valueOf(pageNumber) 92 | ); 93 | } 94 | }.getAsLiveData(); 95 | } 96 | 97 | public LiveData> searchRecipesApi(final String recipeId){ 98 | return new NetworkBoundResource(AppExecutors.getInstance()){ 99 | @Override 100 | protected void saveCallResult(@NonNull RecipeResponse item) { 101 | 102 | // will be null if API key is expired 103 | if(item.getRecipe() != null){ 104 | item.getRecipe().setTimestamp((int)(System.currentTimeMillis() / 1000)); 105 | recipeDao.insertRecipe(item.getRecipe()); 106 | } 107 | } 108 | 109 | @Override 110 | protected boolean shouldFetch(@Nullable Recipe data) { 111 | Log.d(TAG, "shouldFetch: recipe: " + data.toString()); 112 | int currentTime = (int)(System.currentTimeMillis() / 1000); 113 | Log.d(TAG, "shouldFetch: current time: " + currentTime); 114 | int lastRefresh = data.getTimestamp(); 115 | Log.d(TAG, "shouldFetch: last refresh: " + lastRefresh); 116 | Log.d(TAG, "shouldFetch: it's been " + ((currentTime - lastRefresh) / 60 / 60 / 24) + 117 | " days since this recipe was refreshed. 30 days must elapse before refreshing. "); 118 | if((currentTime - data.getTimestamp()) >= Constants.RECIPE_REFRESH_TIME){ 119 | Log.d(TAG, "shouldFetch: SHOULD REFRESH RECIPE?! " + true); 120 | return true; 121 | } 122 | Log.d(TAG, "shouldFetch: SHOULD REFRESH RECIPE?! " + false); 123 | return false; 124 | } 125 | 126 | @NonNull 127 | @Override 128 | protected LiveData loadFromDb() { 129 | return recipeDao.getRecipe(recipeId); 130 | } 131 | 132 | @NonNull 133 | @Override 134 | protected LiveData> createCall() { 135 | return ServiceGenerator.getRecipeApi().getRecipe( 136 | Constants.API_KEY, 137 | recipeId 138 | ); 139 | } 140 | }.getAsLiveData(); 141 | } 142 | } 143 | 144 | 145 | 146 | 147 | 148 | 149 | 150 | 151 | 152 | 153 | 154 | 155 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/util/NetworkBoundResource.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.util; 2 | 3 | import android.arch.lifecycle.LiveData; 4 | import android.arch.lifecycle.MediatorLiveData; 5 | import android.arch.lifecycle.MutableLiveData; 6 | import android.arch.lifecycle.Observer; 7 | import android.support.annotation.MainThread; 8 | import android.support.annotation.NonNull; 9 | import android.support.annotation.Nullable; 10 | import android.support.annotation.WorkerThread; 11 | import android.util.Log; 12 | 13 | import com.codingwithmitch.foodrecipes.AppExecutors; 14 | import com.codingwithmitch.foodrecipes.requests.responses.ApiResponse; 15 | 16 | // CacheObject: Type for the Resource data. (database cache) 17 | // RequestObject: Type for the API response. (network request) 18 | public abstract class NetworkBoundResource { 19 | 20 | private static final String TAG = "NetworkBoundResource"; 21 | 22 | private AppExecutors appExecutors; 23 | private MediatorLiveData> results = new MediatorLiveData<>(); 24 | 25 | public NetworkBoundResource(AppExecutors appExecutors) { 26 | this.appExecutors = appExecutors; 27 | init(); 28 | } 29 | 30 | private void init(){ 31 | 32 | // update LiveData for loading status 33 | results.setValue((Resource) Resource.loading(null)); 34 | 35 | // observe LiveData source from local db 36 | final LiveData dbSource = loadFromDb(); 37 | 38 | results.addSource(dbSource, new Observer() { 39 | @Override 40 | public void onChanged(@Nullable CacheObject cacheObject) { 41 | 42 | results.removeSource(dbSource); 43 | 44 | if(shouldFetch(cacheObject)){ 45 | // get data from the network 46 | fetchFromNetwork(dbSource); 47 | } 48 | else{ 49 | results.addSource(dbSource, new Observer() { 50 | @Override 51 | public void onChanged(@Nullable CacheObject cacheObject) { 52 | setValue(Resource.success(cacheObject)); 53 | } 54 | }); 55 | } 56 | } 57 | }); 58 | } 59 | 60 | /** 61 | * 1) observe local db 62 | * 2) if query the network 63 | * 3) stop observing the local db 64 | * 4) insert new data into local db 65 | * 5) begin observing local db again to see the refreshed data from network 66 | * @param dbSource 67 | */ 68 | private void fetchFromNetwork(final LiveData dbSource){ 69 | 70 | Log.d(TAG, "fetchFromNetwork: called."); 71 | 72 | // update LiveData for loading status 73 | results.addSource(dbSource, new Observer() { 74 | @Override 75 | public void onChanged(@Nullable CacheObject cacheObject) { 76 | setValue(Resource.loading(cacheObject)); 77 | } 78 | }); 79 | 80 | final LiveData> apiResponse = createCall(); 81 | 82 | results.addSource(apiResponse, new Observer>() { 83 | @Override 84 | public void onChanged(@Nullable final ApiResponse requestObjectApiResponse) { 85 | results.removeSource(dbSource); 86 | results.removeSource(apiResponse); 87 | 88 | /* 89 | 3 cases: 90 | 1) ApiSuccessResponse 91 | 2) ApiErrorResponse 92 | 3) ApiEmptyResponse 93 | */ 94 | 95 | if(requestObjectApiResponse instanceof ApiResponse.ApiSuccessResponse){ 96 | Log.d(TAG, "onChanged: ApiSuccessResponse."); 97 | 98 | appExecutors.diskIO().execute(new Runnable() { 99 | @Override 100 | public void run() { 101 | 102 | // save the response to the local db 103 | saveCallResult((RequestObject) processResponse((ApiResponse.ApiSuccessResponse)requestObjectApiResponse)); 104 | 105 | appExecutors.mainThread().execute(new Runnable() { 106 | @Override 107 | public void run() { 108 | results.addSource(loadFromDb(), new Observer() { 109 | @Override 110 | public void onChanged(@Nullable CacheObject cacheObject) { 111 | setValue(Resource.success(cacheObject)); 112 | } 113 | }); 114 | } 115 | }); 116 | } 117 | }); 118 | } 119 | else if(requestObjectApiResponse instanceof ApiResponse.ApiEmptyResponse){ 120 | Log.d(TAG, "onChanged: ApiEmptyResponse"); 121 | appExecutors.mainThread().execute(new Runnable() { 122 | @Override 123 | public void run() { 124 | results.addSource(loadFromDb(), new Observer() { 125 | @Override 126 | public void onChanged(@Nullable CacheObject cacheObject) { 127 | setValue(Resource.success(cacheObject)); 128 | } 129 | }); 130 | } 131 | }); 132 | } 133 | else if(requestObjectApiResponse instanceof ApiResponse.ApiErrorResponse){ 134 | Log.d(TAG, "onChanged: ApiErrorResponse."); 135 | results.addSource(dbSource, new Observer() { 136 | @Override 137 | public void onChanged(@Nullable CacheObject cacheObject) { 138 | setValue( 139 | Resource.error( 140 | ((ApiResponse.ApiErrorResponse) requestObjectApiResponse).getErrorMessage(), 141 | cacheObject 142 | ) 143 | ); 144 | } 145 | }); 146 | } 147 | } 148 | }); 149 | } 150 | 151 | private CacheObject processResponse(ApiResponse.ApiSuccessResponse response){ 152 | return (CacheObject) response.getBody(); 153 | } 154 | 155 | private void setValue(Resource newValue){ 156 | if(results.getValue() != newValue){ 157 | results.setValue(newValue); 158 | } 159 | } 160 | 161 | // Called to save the result of the API response into the database. 162 | @WorkerThread 163 | protected abstract void saveCallResult(@NonNull RequestObject item); 164 | 165 | // Called with the data in the database to decide whether to fetch 166 | // potentially updated data from the network. 167 | @MainThread 168 | protected abstract boolean shouldFetch(@Nullable CacheObject data); 169 | 170 | // Called to get the cached data from the database. 171 | @NonNull @MainThread 172 | protected abstract LiveData loadFromDb(); 173 | 174 | // Called to create the API call. 175 | @NonNull @MainThread 176 | protected abstract LiveData> createCall(); 177 | 178 | // Returns a LiveData object that represents the resource that's implemented 179 | // in the base class. 180 | public final LiveData> getAsLiveData(){ 181 | return results; 182 | }; 183 | } 184 | 185 | 186 | 187 | 188 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/adapters/RecipeRecyclerAdapter.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes.adapters; 2 | 3 | import android.net.Uri; 4 | import android.support.annotation.NonNull; 5 | import android.support.annotation.Nullable; 6 | import android.support.v7.widget.RecyclerView; 7 | import android.text.TextUtils; 8 | import android.view.LayoutInflater; 9 | import android.view.View; 10 | import android.view.ViewGroup; 11 | 12 | import com.bumptech.glide.Glide; 13 | import com.bumptech.glide.ListPreloader; 14 | import com.bumptech.glide.RequestBuilder; 15 | import com.bumptech.glide.RequestManager; 16 | import com.bumptech.glide.request.Request; 17 | import com.bumptech.glide.request.RequestOptions; 18 | import com.bumptech.glide.util.ViewPreloadSizeProvider; 19 | import com.codingwithmitch.foodrecipes.R; 20 | import com.codingwithmitch.foodrecipes.models.Recipe; 21 | import com.codingwithmitch.foodrecipes.util.Constants; 22 | 23 | import java.util.ArrayList; 24 | import java.util.Collections; 25 | import java.util.List; 26 | 27 | public class RecipeRecyclerAdapter extends RecyclerView.Adapter implements 28 | ListPreloader.PreloadModelProvider 29 | { 30 | 31 | private static final int RECIPE_TYPE = 1; 32 | private static final int LOADING_TYPE = 2; 33 | private static final int CATEGORY_TYPE = 3; 34 | private static final int EXHAUSTED_TYPE = 4; 35 | 36 | private List mRecipes; 37 | private OnRecipeListener mOnRecipeListener; 38 | private RequestManager requestManager; 39 | private ViewPreloadSizeProvider preloadSizeProvider; 40 | 41 | public RecipeRecyclerAdapter(OnRecipeListener mOnRecipeListener, 42 | RequestManager requestManager, 43 | ViewPreloadSizeProvider viewPreloadSizeProvider) { 44 | this.mOnRecipeListener = mOnRecipeListener; 45 | this.requestManager = requestManager; 46 | this.preloadSizeProvider = viewPreloadSizeProvider; 47 | } 48 | 49 | @NonNull 50 | @Override 51 | public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) { 52 | 53 | View view = null; 54 | switch (i){ 55 | 56 | case RECIPE_TYPE:{ 57 | view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.layout_recipe_list_item, viewGroup, false); 58 | return new RecipeViewHolder(view, mOnRecipeListener, requestManager, preloadSizeProvider); 59 | } 60 | 61 | case LOADING_TYPE:{ 62 | view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.layout_loading_list_item, viewGroup, false); 63 | return new LoadingViewHolder(view); 64 | } 65 | 66 | case EXHAUSTED_TYPE:{ 67 | view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.layout_search_exhausted, viewGroup, false); 68 | return new SearchExhaustedViewHolder(view); 69 | } 70 | 71 | case CATEGORY_TYPE:{ 72 | view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.layout_category_list_item, viewGroup, false); 73 | return new CategoryViewHolder(view, mOnRecipeListener, requestManager); 74 | } 75 | 76 | default:{ 77 | view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.layout_recipe_list_item, viewGroup, false); 78 | return new RecipeViewHolder(view, mOnRecipeListener, requestManager, preloadSizeProvider); 79 | } 80 | } 81 | 82 | 83 | } 84 | 85 | @Override 86 | public void onBindViewHolder(@NonNull RecyclerView.ViewHolder viewHolder, int i) { 87 | 88 | int itemViewType = getItemViewType(i); 89 | if(itemViewType == RECIPE_TYPE){ 90 | ((RecipeViewHolder)viewHolder).onBind(mRecipes.get(i)); 91 | } 92 | else if(itemViewType == CATEGORY_TYPE){ 93 | ((CategoryViewHolder)viewHolder).onBind(mRecipes.get(i)); 94 | } 95 | 96 | } 97 | 98 | @Override 99 | public int getItemViewType(int position) { 100 | if(mRecipes.get(position).getSocial_rank() == -1){ 101 | return CATEGORY_TYPE; 102 | } 103 | else if(mRecipes.get(position).getTitle().equals("LOADING...")){ 104 | return LOADING_TYPE; 105 | } 106 | else if(mRecipes.get(position).getTitle().equals("EXHAUSTED...")){ 107 | return EXHAUSTED_TYPE; 108 | } 109 | else{ 110 | return RECIPE_TYPE; 111 | } 112 | } 113 | 114 | // display loading during search request 115 | public void displayOnlyLoading(){ 116 | clearRecipesList(); 117 | Recipe recipe = new Recipe(); 118 | recipe.setTitle("LOADING..."); 119 | mRecipes.add(recipe); 120 | notifyDataSetChanged(); 121 | } 122 | 123 | private void clearRecipesList(){ 124 | if(mRecipes == null){ 125 | mRecipes = new ArrayList<>(); 126 | } 127 | else{ 128 | mRecipes.clear(); 129 | } 130 | notifyDataSetChanged(); 131 | } 132 | 133 | public void setQueryExhausted(){ 134 | hideLoading(); 135 | Recipe exhaustedRecipe = new Recipe(); 136 | exhaustedRecipe.setTitle("EXHAUSTED..."); 137 | mRecipes.add(exhaustedRecipe); 138 | notifyDataSetChanged(); 139 | } 140 | 141 | public void hideLoading(){ 142 | if(isLoading()){ 143 | if(mRecipes.get(0).getTitle().equals("LOADING...")){ 144 | mRecipes.remove(0); 145 | } 146 | else if(mRecipes.get(mRecipes.size() - 1).equals("LOADING...")){ 147 | mRecipes.remove(mRecipes.size() - 1); 148 | } 149 | notifyDataSetChanged(); 150 | } 151 | } 152 | 153 | // pagination loading 154 | public void displayLoading(){ 155 | if(mRecipes == null){ 156 | mRecipes = new ArrayList<>(); 157 | } 158 | if(!isLoading()){ 159 | Recipe recipe = new Recipe(); 160 | recipe.setTitle("LOADING..."); 161 | mRecipes.add(recipe); 162 | notifyDataSetChanged(); 163 | } 164 | } 165 | 166 | private boolean isLoading(){ 167 | if(mRecipes != null){ 168 | if(mRecipes.size() > 0){ 169 | if(mRecipes.get(mRecipes.size() - 1).getTitle().equals("LOADING...")){ 170 | return true; 171 | } 172 | } 173 | } 174 | return false; 175 | } 176 | 177 | public void displaySearchCategories(){ 178 | List categories = new ArrayList<>(); 179 | for(int i = 0; i< Constants.DEFAULT_SEARCH_CATEGORIES.length; i++){ 180 | Recipe recipe = new Recipe(); 181 | recipe.setTitle(Constants.DEFAULT_SEARCH_CATEGORIES[i]); 182 | recipe.setImage_url(Constants.DEFAULT_SEARCH_CATEGORY_IMAGES[i]); 183 | recipe.setSocial_rank(-1); 184 | categories.add(recipe); 185 | } 186 | mRecipes = categories; 187 | notifyDataSetChanged(); 188 | } 189 | 190 | @Override 191 | public int getItemCount() { 192 | if(mRecipes != null){ 193 | return mRecipes.size(); 194 | } 195 | return 0; 196 | } 197 | 198 | public void setRecipes(List recipes){ 199 | mRecipes = recipes; 200 | notifyDataSetChanged(); 201 | } 202 | 203 | public Recipe getSelectedRecipe(int position){ 204 | if(mRecipes != null){ 205 | if(mRecipes.size() > 0){ 206 | return mRecipes.get(position); 207 | } 208 | } 209 | return null; 210 | } 211 | 212 | @NonNull 213 | @Override 214 | public List getPreloadItems(int position) { 215 | String url = mRecipes.get(position).getImage_url(); 216 | if(TextUtils.isEmpty(url)){ 217 | return Collections.emptyList(); 218 | } 219 | return Collections.singletonList(url); 220 | } 221 | 222 | @Nullable 223 | @Override 224 | public RequestBuilder getPreloadRequestBuilder(@NonNull String item) { 225 | return requestManager.load(item); 226 | } 227 | } 228 | 229 | 230 | 231 | 232 | 233 | 234 | 235 | 236 | 237 | 238 | 239 | 240 | 241 | 242 | 243 | -------------------------------------------------------------------------------- /app/src/main/java/com/codingwithmitch/foodrecipes/RecipeListActivity.java: -------------------------------------------------------------------------------- 1 | package com.codingwithmitch.foodrecipes; 2 | 3 | import android.arch.lifecycle.Observer; 4 | import android.arch.lifecycle.ViewModelProviders; 5 | import android.content.Intent; 6 | import android.os.Bundle; 7 | import android.support.annotation.NonNull; 8 | import android.support.annotation.Nullable; 9 | import android.support.v7.widget.LinearLayoutManager; 10 | import android.support.v7.widget.RecyclerView; 11 | import android.support.v7.widget.SearchView; 12 | import android.support.v7.widget.Toolbar; 13 | import android.util.Log; 14 | import android.widget.Toast; 15 | 16 | 17 | import com.bumptech.glide.Glide; 18 | import com.bumptech.glide.RequestManager; 19 | import com.bumptech.glide.integration.recyclerview.RecyclerViewPreloader; 20 | import com.bumptech.glide.request.RequestOptions; 21 | import com.bumptech.glide.util.ViewPreloadSizeProvider; 22 | import com.codingwithmitch.foodrecipes.adapters.OnRecipeListener; 23 | import com.codingwithmitch.foodrecipes.adapters.RecipeRecyclerAdapter; 24 | import com.codingwithmitch.foodrecipes.models.Recipe; 25 | import com.codingwithmitch.foodrecipes.util.Resource; 26 | import com.codingwithmitch.foodrecipes.util.Testing; 27 | import com.codingwithmitch.foodrecipes.util.VerticalSpacingItemDecorator; 28 | import com.codingwithmitch.foodrecipes.viewmodels.RecipeListViewModel; 29 | 30 | import java.util.List; 31 | 32 | import static com.codingwithmitch.foodrecipes.viewmodels.RecipeListViewModel.QUERY_EXHAUSTED; 33 | 34 | 35 | public class RecipeListActivity extends BaseActivity implements OnRecipeListener { 36 | 37 | private static final String TAG = "RecipeListActivity"; 38 | 39 | private RecipeListViewModel mRecipeListViewModel; 40 | private RecyclerView mRecyclerView; 41 | private RecipeRecyclerAdapter mAdapter; 42 | private SearchView mSearchView; 43 | 44 | @Override 45 | protected void onCreate(Bundle savedInstanceState) { 46 | super.onCreate(savedInstanceState); 47 | setContentView(R.layout.activity_recipe_list); 48 | mRecyclerView = findViewById(R.id.recipe_list); 49 | mSearchView = findViewById(R.id.search_view); 50 | 51 | mRecipeListViewModel = ViewModelProviders.of(this).get(RecipeListViewModel.class); 52 | 53 | initRecyclerView(); 54 | initSearchView(); 55 | subscribeObservers(); 56 | setSupportActionBar((Toolbar)findViewById(R.id.toolbar)); 57 | } 58 | 59 | private void subscribeObservers(){ 60 | mRecipeListViewModel.getRecipes().observe(this, new Observer>>() { 61 | @Override 62 | public void onChanged(@Nullable Resource> listResource) { 63 | if(listResource != null){ 64 | Log.d(TAG, "onChanged: status: " + listResource.status); 65 | 66 | if(listResource.data != null){ 67 | switch (listResource.status){ 68 | case LOADING:{ 69 | if(mRecipeListViewModel.getPageNumber() > 1){ 70 | mAdapter.displayLoading(); 71 | } 72 | else{ 73 | mAdapter.displayOnlyLoading(); 74 | } 75 | break; 76 | } 77 | 78 | case ERROR:{ 79 | Log.e(TAG, "onChanged: cannot refresh the cache." ); 80 | Log.e(TAG, "onChanged: ERROR message: " + listResource.message ); 81 | Log.e(TAG, "onChanged: status: ERROR, #recipes: " + listResource.data.size()); 82 | mAdapter.hideLoading(); 83 | mAdapter.setRecipes(listResource.data); 84 | Toast.makeText(RecipeListActivity.this, listResource.message, Toast.LENGTH_SHORT).show(); 85 | 86 | if(listResource.message.equals(QUERY_EXHAUSTED)){ 87 | mAdapter.setQueryExhausted(); 88 | } 89 | break; 90 | } 91 | 92 | case SUCCESS:{ 93 | Log.d(TAG, "onChanged: cache has been refreshed."); 94 | Log.d(TAG, "onChanged: status: SUCCESS, #Recipes: " + listResource.data.size()); 95 | mAdapter.hideLoading(); 96 | mAdapter.setRecipes(listResource.data); 97 | break; 98 | } 99 | } 100 | } 101 | } 102 | } 103 | }); 104 | 105 | mRecipeListViewModel.getViewstate().observe(this, new Observer() { 106 | @Override 107 | public void onChanged(@Nullable RecipeListViewModel.ViewState viewState) { 108 | if(viewState != null){ 109 | switch (viewState){ 110 | 111 | case RECIPES:{ 112 | // recipes will show automatically from other observer 113 | break; 114 | } 115 | 116 | case CATEGORIES:{ 117 | displaySearchCategories(); 118 | break; 119 | } 120 | } 121 | } 122 | } 123 | }); 124 | } 125 | 126 | private RequestManager initGlide(){ 127 | 128 | RequestOptions options = new RequestOptions() 129 | .placeholder(R.drawable.white_background) 130 | .error(R.drawable.white_background); 131 | 132 | return Glide.with(this) 133 | .setDefaultRequestOptions(options); 134 | } 135 | 136 | private void searchRecipesApi(String query){ 137 | mRecyclerView.smoothScrollToPosition(0); 138 | mRecipeListViewModel.searchRecipesApi(query, 1); 139 | mSearchView.clearFocus(); 140 | } 141 | 142 | private void initRecyclerView(){ 143 | ViewPreloadSizeProvider viewPreloader = new ViewPreloadSizeProvider<>(); 144 | mAdapter = new RecipeRecyclerAdapter(this, initGlide(), viewPreloader); 145 | VerticalSpacingItemDecorator itemDecorator = new VerticalSpacingItemDecorator(30); 146 | mRecyclerView.addItemDecoration(itemDecorator); 147 | mRecyclerView.setLayoutManager(new LinearLayoutManager(this)); 148 | 149 | RecyclerViewPreloader preloader = new RecyclerViewPreloader( 150 | Glide.with(this), 151 | mAdapter, 152 | viewPreloader, 153 | 30); 154 | 155 | mRecyclerView.addOnScrollListener(preloader); 156 | 157 | mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() { 158 | @Override 159 | public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) { 160 | super.onScrollStateChanged(recyclerView, newState); 161 | 162 | if(!mRecyclerView.canScrollVertically(1) 163 | && mRecipeListViewModel.getViewstate().getValue() == RecipeListViewModel.ViewState.RECIPES){ 164 | mRecipeListViewModel.searchNextPage(); 165 | } 166 | } 167 | }); 168 | 169 | mRecyclerView.setAdapter(mAdapter); 170 | } 171 | 172 | private void initSearchView(){ 173 | mSearchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() { 174 | @Override 175 | public boolean onQueryTextSubmit(String s) { 176 | 177 | searchRecipesApi(s); 178 | return false; 179 | } 180 | 181 | @Override 182 | public boolean onQueryTextChange(String s) { 183 | return false; 184 | } 185 | }); 186 | } 187 | 188 | @Override 189 | public void onRecipeClick(int position) { 190 | Intent intent = new Intent(this, RecipeActivity.class); 191 | intent.putExtra("recipe", mAdapter.getSelectedRecipe(position)); 192 | startActivity(intent); 193 | } 194 | 195 | @Override 196 | public void onCategoryClick(String category) { 197 | searchRecipesApi(category); 198 | } 199 | 200 | private void displaySearchCategories(){ 201 | mAdapter.displaySearchCategories(); 202 | } 203 | 204 | 205 | @Override 206 | public void onBackPressed() { 207 | if(mRecipeListViewModel.getViewstate().getValue() == RecipeListViewModel.ViewState.CATEGORIES){ 208 | super.onBackPressed(); 209 | } 210 | else{ 211 | mRecipeListViewModel.cancelSearchRequest(); 212 | mRecipeListViewModel.setViewCategories(); 213 | } 214 | } 215 | } 216 | 217 | 218 | 219 | 220 | 221 | 222 | 223 | 224 | 225 | 226 | 227 | 228 | 229 | 230 | 231 | 232 | 233 | --------------------------------------------------------------------------------