├── .gitignore
├── .idea
├── assetWizardSettings.xml
├── codeStyles
│ └── Project.xml
├── gradle.xml
├── misc.xml
└── runConfigurations.xml
├── app
├── .gitignore
├── build.gradle
├── proguard-rules.pro
└── src
│ ├── androidTest
│ └── java
│ │ └── com
│ │ └── codingwithmitch
│ │ └── mvvmrecyclerview
│ │ └── ExampleInstrumentedTest.java
│ ├── main
│ ├── AndroidManifest.xml
│ ├── java
│ │ └── com
│ │ │ └── codingwithmitch
│ │ │ └── mvvmrecyclerview
│ │ │ ├── MainActivity.java
│ │ │ ├── adapters
│ │ │ └── RecyclerAdapter.java
│ │ │ ├── models
│ │ │ └── NicePlace.java
│ │ │ ├── repositories
│ │ │ └── NicePlaceRepository.java
│ │ │ └── viewmodels
│ │ │ └── MainActivityViewModel.java
│ └── res
│ │ ├── drawable-v24
│ │ └── ic_launcher_foreground.xml
│ │ ├── drawable
│ │ ├── ic_add_white_24dp.xml
│ │ └── ic_launcher_background.xml
│ │ ├── layout
│ │ ├── activity_main.xml
│ │ └── layout_listitem.xml
│ │ ├── mipmap-anydpi-v26
│ │ ├── ic_launcher.xml
│ │ └── ic_launcher_round.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
│ │ └── values
│ │ ├── colors.xml
│ │ ├── strings.xml
│ │ └── styles.xml
│ └── test
│ └── java
│ └── com
│ └── codingwithmitch
│ └── mvvmrecyclerview
│ └── ExampleUnitTest.java
├── build.gradle
├── gradle.properties
├── gradle
└── wrapper
│ ├── gradle-wrapper.jar
│ └── gradle-wrapper.properties
├── gradlew
├── gradlew.bat
└── settings.gradle
/.gitignore:
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1 | *.iml
2 | .gradle
3 | /local.properties
4 | /.idea/caches/build_file_checksums.ser
5 | /.idea/libraries
6 | /.idea/modules.xml
7 | /.idea/workspace.xml
8 | .DS_Store
9 | /build
10 | /captures
11 | .externalNativeBuild
12 |
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/.idea/runConfigurations.xml:
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/app/.gitignore:
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1 | /build
2 |
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/app/build.gradle:
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1 | apply plugin: 'com.android.application'
2 |
3 | android {
4 | compileSdkVersion 28
5 | defaultConfig {
6 | applicationId "com.codingwithmitch.mvvmrecyclerview"
7 | minSdkVersion 21
8 | targetSdkVersion 28
9 | versionCode 1
10 | versionName "1.0"
11 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
12 | }
13 | buildTypes {
14 | release {
15 | minifyEnabled false
16 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
17 | }
18 | }
19 | }
20 |
21 | dependencies {
22 | implementation fileTree(dir: 'libs', include: ['*.jar'])
23 | implementation 'com.android.support:appcompat-v7:28.0.0'
24 | implementation 'com.android.support.constraint:constraint-layout:1.1.3'
25 | testImplementation 'junit:junit:4.12'
26 | androidTestImplementation 'com.android.support.test:runner:1.0.2'
27 | androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
28 |
29 | // Lifecycle components
30 | def archLifecycleVersion = '1.1.1'
31 | implementation "android.arch.lifecycle:extensions:$archLifecycleVersion"
32 | annotationProcessor "android.arch.lifecycle:compiler:$archLifecycleVersion"
33 |
34 | // Glide
35 | def glideVersion = '4.8.0'
36 | implementation "com.github.bumptech.glide:glide:$glideVersion"
37 | annotationProcessor "com.github.bumptech.glide:compiler:$glideVersion"
38 |
39 | //RecyclerView
40 | implementation 'com.android.support:recyclerview-v7:28.0.0'
41 |
42 | //Support Design for Coordinator layout
43 | implementation 'com.android.support:design:28.0.0'
44 |
45 | //circle imageview
46 | implementation 'de.hdodenhof:circleimageview:2.2.0'
47 | }
48 |
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/app/proguard-rules.pro:
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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 |
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/app/src/androidTest/java/com/codingwithmitch/mvvmrecyclerview/ExampleInstrumentedTest.java:
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1 | package com.codingwithmitch.mvvmrecyclerview;
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.mvvmrecyclerview", appContext.getPackageName());
25 | }
26 | }
27 |
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/app/src/main/AndroidManifest.xml:
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/app/src/main/java/com/codingwithmitch/mvvmrecyclerview/MainActivity.java:
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1 | package com.codingwithmitch.mvvmrecyclerview;
2 |
3 | import android.arch.lifecycle.Observer;
4 | import android.arch.lifecycle.ViewModelProviders;
5 | import android.support.annotation.Nullable;
6 | import android.support.design.widget.FloatingActionButton;
7 | import android.support.v7.app.AppCompatActivity;
8 | import android.os.Bundle;
9 | import android.support.v7.widget.LinearLayoutManager;
10 | import android.support.v7.widget.RecyclerView;
11 | import android.view.View;
12 | import android.widget.ProgressBar;
13 |
14 | import com.codingwithmitch.mvvmrecyclerview.adapters.RecyclerAdapter;
15 | import com.codingwithmitch.mvvmrecyclerview.models.NicePlace;
16 | import com.codingwithmitch.mvvmrecyclerview.viewmodels.MainActivityViewModel;
17 |
18 | import java.util.ArrayList;
19 | import java.util.List;
20 |
21 | public class MainActivity extends AppCompatActivity {
22 |
23 | private static final String TAG = "MainActivity";
24 |
25 | private FloatingActionButton mFab;
26 | private RecyclerView mRecyclerView;
27 | private RecyclerAdapter mAdapter;
28 | private ProgressBar mProgressBar;
29 | private MainActivityViewModel mMainActivityViewModel;
30 |
31 | @Override
32 | protected void onCreate(Bundle savedInstanceState) {
33 | super.onCreate(savedInstanceState);
34 | setContentView(R.layout.activity_main);
35 | mFab = findViewById(R.id.fab);
36 | mRecyclerView = findViewById(R.id.recycler_view);
37 | mProgressBar = findViewById(R.id.progress_bar);
38 |
39 | mMainActivityViewModel = ViewModelProviders.of(this).get(MainActivityViewModel.class);
40 |
41 | mMainActivityViewModel.init();
42 |
43 | mMainActivityViewModel.getNicePlaces().observe(this, new Observer>() {
44 | @Override
45 | public void onChanged(@Nullable List nicePlaces) {
46 | mAdapter.notifyDataSetChanged();
47 | }
48 | });
49 |
50 | mMainActivityViewModel.getIsUpdating().observe(this, new Observer() {
51 | @Override
52 | public void onChanged(@Nullable Boolean aBoolean) {
53 | if(aBoolean){
54 | showProgressBar();
55 | }
56 | else{
57 | hideProgressBar();
58 | mRecyclerView.smoothScrollToPosition(mMainActivityViewModel.getNicePlaces().getValue().size()-1);
59 | }
60 | }
61 | });
62 |
63 |
64 | mFab.setOnClickListener(new View.OnClickListener() {
65 | @Override
66 | public void onClick(View view) {
67 | mMainActivityViewModel.addNewValue(
68 | new NicePlace(
69 | "https://i.imgur.com/ZcLLrkY.jpg",
70 | "Washington"
71 | )
72 | );
73 | }
74 | });
75 |
76 | initRecyclerView();
77 | }
78 |
79 | private void initRecyclerView(){
80 | mAdapter = new RecyclerAdapter(this, mMainActivityViewModel.getNicePlaces().getValue());
81 | RecyclerView.LayoutManager linearLayoutManager = new LinearLayoutManager(this);
82 | mRecyclerView.setLayoutManager(linearLayoutManager);
83 | mRecyclerView.setAdapter(mAdapter);
84 | }
85 |
86 | private void showProgressBar(){
87 | mProgressBar.setVisibility(View.VISIBLE);
88 | }
89 |
90 | private void hideProgressBar(){
91 | mProgressBar.setVisibility(View.GONE);
92 | }
93 | }
94 |
95 |
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/app/src/main/java/com/codingwithmitch/mvvmrecyclerview/adapters/RecyclerAdapter.java:
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1 | package com.codingwithmitch.mvvmrecyclerview.adapters;
2 |
3 | import android.content.Context;
4 | import android.support.annotation.NonNull;
5 | import android.support.v7.widget.RecyclerView;
6 | import android.view.LayoutInflater;
7 | import android.view.View;
8 | import android.view.ViewGroup;
9 | import android.widget.TextView;
10 |
11 | import com.bumptech.glide.Glide;
12 | import com.bumptech.glide.request.RequestOptions;
13 | import com.codingwithmitch.mvvmrecyclerview.R;
14 | import com.codingwithmitch.mvvmrecyclerview.models.NicePlace;
15 |
16 | import java.util.ArrayList;
17 | import java.util.List;
18 |
19 | import de.hdodenhof.circleimageview.CircleImageView;
20 |
21 | public class RecyclerAdapter extends RecyclerView.Adapter {
22 |
23 | private List mNicePlaces = new ArrayList<>();
24 | private Context mContext;
25 |
26 | public RecyclerAdapter(Context context, List nicePlaces) {
27 | mNicePlaces = nicePlaces;
28 | mContext = context;
29 | }
30 |
31 | @NonNull
32 | @Override
33 | public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
34 | View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.layout_listitem, viewGroup, false);
35 | ViewHolder vh = new ViewHolder(view);
36 | return vh;
37 | }
38 |
39 | @Override
40 | public void onBindViewHolder(@NonNull RecyclerView.ViewHolder viewHolder, int i) {
41 |
42 | // Set the name of the 'NicePlace'
43 | ((ViewHolder)viewHolder).mName.setText(mNicePlaces.get(i).getTitle());
44 |
45 | // Set the image
46 | RequestOptions defaultOptions = new RequestOptions()
47 | .error(R.drawable.ic_launcher_background);
48 | Glide.with(mContext)
49 | .setDefaultRequestOptions(defaultOptions)
50 | .load(mNicePlaces.get(i).getImageUrl())
51 | .into(((ViewHolder)viewHolder).mImage);
52 | }
53 |
54 | @Override
55 | public int getItemCount() {
56 | return mNicePlaces.size();
57 | }
58 |
59 | private class ViewHolder extends RecyclerView.ViewHolder{
60 |
61 | private CircleImageView mImage;
62 | private TextView mName;
63 |
64 | public ViewHolder(@NonNull View itemView) {
65 | super(itemView);
66 | mImage = itemView.findViewById(R.id.image);
67 | mName = itemView.findViewById(R.id.image_name);
68 | }
69 | }
70 | }
71 |
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/app/src/main/java/com/codingwithmitch/mvvmrecyclerview/models/NicePlace.java:
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1 | package com.codingwithmitch.mvvmrecyclerview.models;
2 |
3 | public class NicePlace {
4 |
5 | private String title;
6 | private String imageUrl;
7 |
8 | public NicePlace(String imageUrl, String title) {
9 | this.title = title;
10 | this.imageUrl = imageUrl;
11 | }
12 |
13 | public NicePlace() {
14 | }
15 |
16 | public String getTitle() {
17 | return title;
18 | }
19 |
20 | public void setTitle(String title) {
21 | this.title = title;
22 | }
23 |
24 | public String getImageUrl() {
25 | return imageUrl;
26 | }
27 |
28 | public void setImageUrl(String imageUrl) {
29 | this.imageUrl = imageUrl;
30 | }
31 |
32 | }
33 |
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/app/src/main/java/com/codingwithmitch/mvvmrecyclerview/repositories/NicePlaceRepository.java:
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1 | package com.codingwithmitch.mvvmrecyclerview.repositories;
2 |
3 | import android.arch.lifecycle.MutableLiveData;
4 |
5 | import com.codingwithmitch.mvvmrecyclerview.models.NicePlace;
6 |
7 | import java.util.ArrayList;
8 | import java.util.List;
9 |
10 |
11 | /**
12 | * Singleton pattern
13 | */
14 | public class NicePlaceRepository {
15 |
16 | private static NicePlaceRepository instance;
17 | private ArrayList dataSet = new ArrayList<>();
18 |
19 | public static NicePlaceRepository getInstance(){
20 | if(instance == null){
21 | instance = new NicePlaceRepository();
22 | }
23 | return instance;
24 | }
25 |
26 |
27 | // Pretend to get data from a webservice or online source
28 | public MutableLiveData> getNicePlaces(){
29 | setNicePlaces();
30 | MutableLiveData> data = new MutableLiveData<>();
31 | data.setValue(dataSet);
32 | return data;
33 | }
34 |
35 | private void setNicePlaces(){
36 | dataSet.add(
37 | new NicePlace("https://c1.staticflickr.com/5/4636/25316407448_de5fbf183d_o.jpg",
38 | "Havasu Falls")
39 | );
40 | dataSet.add(
41 | new NicePlace("https://i.redd.it/tpsnoz5bzo501.jpg",
42 | "Trondheim")
43 | );
44 | dataSet.add(
45 | new NicePlace("https://i.redd.it/qn7f9oqu7o501.jpg",
46 | "Portugal")
47 | );
48 | dataSet.add(
49 | new NicePlace("https://i.redd.it/j6myfqglup501.jpg",
50 | "Rocky Mountain National Park")
51 | );
52 | dataSet.add(
53 | new NicePlace("https://i.redd.it/0h2gm1ix6p501.jpg",
54 | "Havasu Falls")
55 | );
56 | dataSet.add(
57 | new NicePlace("https://i.redd.it/k98uzl68eh501.jpg",
58 | "Mahahual")
59 | );
60 | dataSet.add(
61 | new NicePlace("https://c1.staticflickr.com/5/4636/25316407448_de5fbf183d_o.jpg",
62 | "Frozen Lake")
63 | );
64 | dataSet.add(
65 | new NicePlace("https://i.redd.it/obx4zydshg601.jpg",
66 | "Austrailia")
67 | );
68 | }
69 | }
70 |
71 |
72 |
73 |
74 |
75 |
76 |
77 |
78 |
79 |
80 |
81 |
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/app/src/main/java/com/codingwithmitch/mvvmrecyclerview/viewmodels/MainActivityViewModel.java:
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1 | package com.codingwithmitch.mvvmrecyclerview.viewmodels;
2 |
3 | import android.arch.lifecycle.LiveData;
4 | import android.arch.lifecycle.MutableLiveData;
5 | import android.arch.lifecycle.ViewModel;
6 | import android.os.AsyncTask;
7 |
8 | import com.codingwithmitch.mvvmrecyclerview.models.NicePlace;
9 | import com.codingwithmitch.mvvmrecyclerview.repositories.NicePlaceRepository;
10 |
11 | import java.util.List;
12 |
13 | public class MainActivityViewModel extends ViewModel {
14 |
15 | private MutableLiveData> mNicePlaces;
16 | private NicePlaceRepository mRepo;
17 | private MutableLiveData mIsUpdating = new MutableLiveData<>();
18 |
19 | public void init(){
20 | if(mNicePlaces != null){
21 | return;
22 | }
23 | mRepo = NicePlaceRepository.getInstance();
24 | mNicePlaces = mRepo.getNicePlaces();
25 | }
26 |
27 | public void addNewValue(final NicePlace nicePlace){
28 | mIsUpdating.setValue(true);
29 |
30 | new AsyncTask(){
31 | @Override
32 | protected void onPostExecute(Void aVoid) {
33 | super.onPostExecute(aVoid);
34 | List currentPlaces = mNicePlaces.getValue();
35 | currentPlaces.add(nicePlace);
36 | mNicePlaces.postValue(currentPlaces);
37 | mIsUpdating.postValue(false);
38 | }
39 |
40 | @Override
41 | protected Void doInBackground(Void... voids) {
42 |
43 | try {
44 | Thread.sleep(2000);
45 | } catch (InterruptedException e) {
46 | e.printStackTrace();
47 | }
48 | return null;
49 | }
50 | }.execute();
51 | }
52 |
53 | public LiveData> getNicePlaces(){
54 | return mNicePlaces;
55 | }
56 |
57 |
58 | public LiveData getIsUpdating(){
59 | return mIsUpdating;
60 | }
61 | }
62 |
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/app/src/main/res/drawable-v24/ic_launcher_foreground.xml:
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