├── .gitignore ├── .idea ├── codeStyles │ └── Project.xml ├── gradle.xml ├── misc.xml └── runConfigurations.xml ├── README.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ ├── androidTest │ └── java │ │ └── io │ │ └── github │ │ └── shinem │ │ └── recyclerviewcachedemo │ │ └── ExampleInstrumentedTest.java │ ├── main │ ├── AndroidManifest.xml │ ├── java │ │ └── io │ │ │ └── github │ │ │ └── shinem │ │ │ └── recyclerviewcachedemo │ │ │ ├── DemoListActivity.java │ │ │ ├── ExtensionCache.java │ │ │ └── MainActivity.java │ └── res │ │ ├── drawable-v24 │ │ └── ic_launcher_foreground.xml │ │ ├── drawable │ │ └── ic_launcher_background.xml │ │ ├── layout │ │ ├── activity_demo_list.xml │ │ └── activity_main.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 │ └── io │ └── github │ └── shinem │ └── recyclerviewcachedemo │ └── ExampleUnitTest.java ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 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 | -------------------------------------------------------------------------------- /.idea/codeStyles/Project.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 15 | 16 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | -------------------------------------------------------------------------------- /.idea/gradle.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 17 | 18 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 19 | 31 | 32 | 33 | 34 | 35 | 36 | 38 | -------------------------------------------------------------------------------- /.idea/runConfigurations.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 11 | 12 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Extremely smooth RecyclerView 2 | 3 | As we known，reducing the cost of onCreateViewHolder and onBindViewHolder is the key of RecyclerView's fluency. 4 | 5 | So can we reduce it to 0 ms? 6 | 7 | Conditional yes. 8 | -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 28 5 | defaultConfig { 6 | applicationId "io.github.shinem.recyclerviewcachedemo" 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 | implementation 'com.android.support:recyclerview-v7:28.0.0' 26 | testImplementation 'junit:junit:4.12' 27 | androidTestImplementation 'com.android.support.test:runner:1.0.2' 28 | androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2' 29 | } 30 | -------------------------------------------------------------------------------- /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/androidTest/java/io/github/shinem/recyclerviewcachedemo/ExampleInstrumentedTest.java: -------------------------------------------------------------------------------- 1 | package io.github.shinem.recyclerviewcachedemo; 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("io.github.shinem.recyclerviewcachedemo", appContext.getPackageName()); 25 | } 26 | } 27 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | -------------------------------------------------------------------------------- /app/src/main/java/io/github/shinem/recyclerviewcachedemo/DemoListActivity.java: -------------------------------------------------------------------------------- 1 | package io.github.shinem.recyclerviewcachedemo; 2 | 3 | import android.graphics.Color; 4 | import android.os.Bundle; 5 | import android.support.annotation.NonNull; 6 | import android.support.annotation.Nullable; 7 | import android.support.v7.app.AppCompatActivity; 8 | import android.support.v7.widget.LinearLayoutManager; 9 | import android.support.v7.widget.RecyclerView; 10 | import android.view.Gravity; 11 | import android.view.View; 12 | import android.view.ViewGroup; 13 | import android.widget.FrameLayout; 14 | import android.widget.ProgressBar; 15 | import android.widget.TextView; 16 | 17 | import java.util.ArrayList; 18 | import java.util.List; 19 | 20 | /** 21 | * @author shinem_zhong. 22 | * @since 2018/12/15 23 | */ 24 | public class DemoListActivity extends AppCompatActivity { 25 | public static final String EXTRA_USE_PRE_CACHE = "extra_use_pre_cache"; 26 | 27 | private final static Object LOADING_HOLDER = new Object(); 28 | 29 | private RecyclerView mRecyclerView; 30 | private List mDataList = new ArrayList<>(); 31 | private DemoAdapter mAdapter; 32 | private LinearLayoutManager mLayoutManager; 33 | private ExtensionCache mExtensionCache; 34 | private boolean mIsLoading; 35 | 36 | @Override 37 | protected void onCreate(@Nullable Bundle savedInstanceState) { 38 | super.onCreate(savedInstanceState); 39 | setContentView(R.layout.activity_demo_list); 40 | mRecyclerView = findViewById(R.id.list); 41 | mAdapter = new DemoAdapter(mDataList); 42 | mLayoutManager = new LinearLayoutManager(this); 43 | mLayoutManager.setItemPrefetchEnabled(false); 44 | 45 | mRecyclerView.setLayoutManager(mLayoutManager); 46 | mRecyclerView.setAdapter(mAdapter); 47 | mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() { 48 | @Override 49 | public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) { 50 | if (isScrollingTriggerLoadingMore()) { 51 | loadMoreData(); 52 | } 53 | } 54 | }); 55 | List dataListForCache = new ArrayList(); 56 | mExtensionCache = new ExtensionCache( 57 | dataListForCache, 58 | new DemoAdapter(dataListForCache), 59 | new ExtensionCache.DataProvider() { 60 | @Override 61 | public Object getDataAt(int position) { 62 | return mDataList.get(position); 63 | } 64 | }); 65 | 66 | if (getIntent().getBooleanExtra(EXTRA_USE_PRE_CACHE, false)) { 67 | // Here is the magic 68 | mRecyclerView.setViewCacheExtension(mExtensionCache); 69 | } 70 | 71 | loadMoreData(); 72 | } 73 | 74 | private void loadMoreData() { 75 | mIsLoading = true; 76 | final int currentSize = mDataList.size(); 77 | mDataList.add(LOADING_HOLDER); 78 | mAdapter.notifyItemInserted(mDataList.size()); 79 | new Thread(new Runnable() { 80 | @Override 81 | public void run() { 82 | try { 83 | Thread.sleep(500); 84 | } catch (InterruptedException e) { 85 | e.printStackTrace(); 86 | } 87 | final List newDataList = new ArrayList<>(); 88 | for (int i = 0; i < 10; i++) { 89 | newDataList.add(currentSize + i); 90 | } 91 | // Cache holders in non-UIThread when loading data. 92 | mExtensionCache.cacheHoldersForDataList(mRecyclerView, newDataList); 93 | 94 | runOnUiThread(new Runnable() { 95 | @Override 96 | public void run() { 97 | mDataList.remove(LOADING_HOLDER); 98 | mDataList.addAll(newDataList); 99 | mAdapter.notifyDataSetChanged(); 100 | mIsLoading = false; 101 | } 102 | }); 103 | } 104 | }).start(); 105 | } 106 | 107 | public static class DemoAdapter extends RecyclerView.Adapter { 108 | private final List mDataList; 109 | 110 | public DemoAdapter(List dataList) { 111 | this.mDataList = dataList; 112 | } 113 | 114 | @NonNull 115 | @Override 116 | public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int viewType) { 117 | if (viewType == LOADING_HOLDER.hashCode()) { 118 | return new LoadingHolder(new FrameLayout(viewGroup.getContext())); 119 | } else { 120 | fakeHeavyCompute(); 121 | return new DemoViewHolder(new TextView(viewGroup.getContext())); 122 | } 123 | } 124 | 125 | private void fakeHeavyCompute() { 126 | try { 127 | Thread.sleep(100); 128 | } catch (InterruptedException e) { 129 | e.printStackTrace(); 130 | } 131 | } 132 | 133 | @Override 134 | public void onBindViewHolder(@NonNull RecyclerView.ViewHolder viewHolder, int pos) { 135 | if (viewHolder instanceof DemoViewHolder) { 136 | DemoViewHolder holder = (DemoViewHolder) viewHolder; 137 | Object data = mDataList.get(pos); 138 | // Do not need bind if the target data is already bound in previous pre-caching. 139 | if (data.equals(holder.data)) { 140 | return; 141 | } 142 | ((TextView) holder.itemView).setText("Index: " + (int) data); 143 | holder.data = data; 144 | fakeHeavyCompute(); 145 | } 146 | } 147 | 148 | @Override 149 | public int getItemCount() { 150 | return mDataList.size(); 151 | } 152 | 153 | @Override 154 | public int getItemViewType(int position) { 155 | return mDataList.get(position) == LOADING_HOLDER ? LOADING_HOLDER.hashCode() : 0; 156 | } 157 | } 158 | 159 | private static class DemoViewHolder extends RecyclerView.ViewHolder { 160 | private Object data; 161 | 162 | public DemoViewHolder(View view) { 163 | super(view); 164 | ((TextView) view).setGravity(Gravity.CENTER); 165 | ((TextView) view).setTextColor(Color.WHITE); 166 | view.setBackgroundColor(view.getResources().getColor(R.color.colorAccent)); 167 | RecyclerView.LayoutParams params = new RecyclerView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 400); 168 | params.topMargin = 20; 169 | view.setLayoutParams(params); 170 | } 171 | } 172 | 173 | private static class LoadingHolder extends RecyclerView.ViewHolder { 174 | public LoadingHolder(View view) { 175 | super(view); 176 | FrameLayout frameLayout = (FrameLayout) view; 177 | frameLayout.setLayoutParams(new ViewGroup.LayoutParams( 178 | ViewGroup.LayoutParams.MATCH_PARENT, 150)); 179 | FrameLayout.LayoutParams params = new FrameLayout.LayoutParams( 180 | ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 181 | params.gravity = Gravity.CENTER; 182 | frameLayout.addView(new ProgressBar(view.getContext()), params); 183 | } 184 | } 185 | 186 | private boolean isScrollingTriggerLoadingMore() { 187 | int totalItemCount = mLayoutManager.getItemCount(); 188 | int lastVisibleItemPosition = mLayoutManager.findLastVisibleItemPosition(); 189 | return !mIsLoading 190 | && totalItemCount > 0 191 | && (totalItemCount - lastVisibleItemPosition < 3); 192 | } 193 | } 194 | -------------------------------------------------------------------------------- /app/src/main/java/io/github/shinem/recyclerviewcachedemo/ExtensionCache.java: -------------------------------------------------------------------------------- 1 | package io.github.shinem.recyclerviewcachedemo; 2 | 3 | import android.support.annotation.NonNull; 4 | import android.support.annotation.Nullable; 5 | import android.support.v7.widget.RecyclerView; 6 | import android.view.View; 7 | 8 | import java.lang.reflect.Field; 9 | import java.lang.reflect.InvocationTargetException; 10 | import java.lang.reflect.Method; 11 | import java.util.List; 12 | import java.util.Map; 13 | import java.util.concurrent.ConcurrentHashMap; 14 | 15 | /** 16 | * @author shinem_zhong. 17 | * @since 2018/12/15 18 | */ 19 | public class ExtensionCache extends RecyclerView.ViewCacheExtension { 20 | 21 | private final Map mCacheHolders = new ConcurrentHashMap<>(); 22 | // Mirror adapter assurance that getItemViewType and bindViewHolder functions work the same as the origin adapter. 23 | private final RecyclerView.Adapter mMirrorAdapter; 24 | // This is only used to bind the cache holder with associated data, 25 | // which will be clear when next cache order arrive. 26 | private final List mDataListForBind; 27 | 28 | private final DataProvider mDataProvider; 29 | 30 | public ExtensionCache(List dataListForCache, RecyclerView.Adapter mirrorAdapter, DataProvider mDataProvider) { 31 | this.mMirrorAdapter = mirrorAdapter; 32 | this.mDataListForBind = dataListForCache; 33 | this.mDataProvider = mDataProvider; 34 | } 35 | 36 | public RecyclerView.ViewHolder getCacheHolder(Object data) { 37 | RecyclerView.ViewHolder holder = mCacheHolders.get(data); 38 | return holder; 39 | } 40 | 41 | public void cacheHoldersForDataList(RecyclerView recyclerView, List dataList) { 42 | mDataListForBind.clear(); 43 | mDataListForBind.addAll(dataList); 44 | mCacheHolders.clear(); 45 | for (Object data : dataList) { 46 | int position = dataList.indexOf(data); 47 | RecyclerView.ViewHolder holder = mMirrorAdapter.createViewHolder( 48 | recyclerView, mMirrorAdapter.getItemViewType(position)); 49 | 50 | // Hack the create process 51 | RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) holder.itemView.getLayoutParams(); 52 | try { 53 | Field field = RecyclerView.LayoutParams.class.getDeclaredField("mViewHolder"); 54 | field.setAccessible(true); 55 | field.set(params, holder); 56 | holder.itemView.setLayoutParams(params); 57 | 58 | } catch (NoSuchFieldException | IllegalAccessException e) { 59 | e.printStackTrace(); 60 | } 61 | 62 | mMirrorAdapter.bindViewHolder(holder, position); 63 | 64 | // Make the holder state invalid. 65 | try { 66 | Method method = RecyclerView.ViewHolder.class.getDeclaredMethod("addFlags", int.class); 67 | method.setAccessible(true); 68 | method.invoke(holder, 1 << 2); 69 | } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) { 70 | e.printStackTrace(); 71 | } 72 | 73 | mCacheHolders.put(data, holder); 74 | } 75 | } 76 | 77 | @Nullable 78 | @Override 79 | public View getViewForPositionAndType(@NonNull RecyclerView.Recycler recycler, int position, int viewType) { 80 | RecyclerView.ViewHolder cacheHolder = getCacheHolder(mDataProvider.getDataAt(position)); 81 | return cacheHolder != null ? cacheHolder.itemView : null; 82 | } 83 | 84 | public interface DataProvider { 85 | Object getDataAt(int position); 86 | } 87 | } 88 | -------------------------------------------------------------------------------- /app/src/main/java/io/github/shinem/recyclerviewcachedemo/MainActivity.java: -------------------------------------------------------------------------------- 1 | package io.github.shinem.recyclerviewcachedemo; 2 | 3 | import android.content.Intent; 4 | import android.os.Bundle; 5 | import android.support.v7.app.AppCompatActivity; 6 | import android.view.View; 7 | 8 | import static io.github.shinem.recyclerviewcachedemo.DemoListActivity.EXTRA_USE_PRE_CACHE; 9 | 10 | public class MainActivity extends AppCompatActivity { 11 | 12 | @Override 13 | protected void onCreate(Bundle savedInstanceState) { 14 | super.onCreate(savedInstanceState); 15 | setContentView(R.layout.activity_main); 16 | findViewById(R.id.pre_cache_btn).setOnClickListener(new View.OnClickListener() { 17 | @Override 18 | public void onClick(View v) { 19 | gotoList(true); 20 | } 21 | }); 22 | findViewById(R.id.no_cache_btn).setOnClickListener(new View.OnClickListener() { 23 | @Override 24 | public void onClick(View v) { 25 | gotoList(false); 26 | } 27 | }); 28 | } 29 | 30 | private void gotoList(boolean useCache) { 31 | Intent intent = new Intent(MainActivity.this, DemoListActivity.class); 32 | intent.putExtra(EXTRA_USE_PRE_CACHE, useCache); 33 | startActivity(intent); 34 | } 35 | } 36 | -------------------------------------------------------------------------------- /app/src/main/res/drawable-v24/ic_launcher_foreground.xml: -------------------------------------------------------------------------------- 1 | 7 | 12 | 13 | 19 | 22 | 25 | 26 | 27 | 28 | 34 | 35 | -------------------------------------------------------------------------------- /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/res/layout/activity_demo_list.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | 10 | 11 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 8 | 9 | 17 | 18 | 27 | 28 | -------------------------------------------------------------------------------- /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/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/shineM/RecyclerViewCacheDemo/b19f189d348941b5ac32bcd6fbddfd48109d8cda/app/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/shineM/RecyclerViewCacheDemo/b19f189d348941b5ac32bcd6fbddfd48109d8cda/app/src/main/res/mipmap-hdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher.png: 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https://raw.githubusercontent.com/shineM/RecyclerViewCacheDemo/b19f189d348941b5ac32bcd6fbddfd48109d8cda/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/shineM/RecyclerViewCacheDemo/b19f189d348941b5ac32bcd6fbddfd48109d8cda/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/shineM/RecyclerViewCacheDemo/b19f189d348941b5ac32bcd6fbddfd48109d8cda/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #008577 4 | #00574B 5 | #D81B60 6 | 7 | -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | RecyclerViewCacheDemo 3 | 4 | -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 10 | 11 | 12 | -------------------------------------------------------------------------------- /app/src/test/java/io/github/shinem/recyclerviewcachedemo/ExampleUnitTest.java: -------------------------------------------------------------------------------- 1 | package io.github.shinem.recyclerviewcachedemo; 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 | } -------------------------------------------------------------------------------- /build.gradle: -------------------------------------------------------------------------------- 1 | // Top-level build file where you can add configuration options common to all sub-projects/modules. 2 | 3 | buildscript { 4 | 5 | repositories { 6 | google() 7 | jcenter() 8 | } 9 | dependencies { 10 | classpath 'com.android.tools.build:gradle:3.2.0' 11 | 12 | 13 | // NOTE: Do not place your application dependencies here; they belong 14 | // in the individual module build.gradle files 15 | } 16 | } 17 | 18 | allprojects { 19 | repositories { 20 | google() 21 | jcenter() 22 | } 23 | } 24 | 25 | task clean(type: Delete) { 26 | delete rootProject.buildDir 27 | } 28 | -------------------------------------------------------------------------------- /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 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/shineM/RecyclerViewCacheDemo/b19f189d348941b5ac32bcd6fbddfd48109d8cda/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | distributionBase=GRADLE_USER_HOME 2 | distributionPath=wrapper/dists 3 | distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-all.zip 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | -------------------------------------------------------------------------------- /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 | -------------------------------------------------------------------------------- /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 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app' 2 | --------------------------------------------------------------------------------