├── .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:
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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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/README.md:
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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 |
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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 "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 |
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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/io/github/shinem/recyclerviewcachedemo/ExampleInstrumentedTest.java:
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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 |
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/app/src/main/AndroidManifest.xml:
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/app/src/main/java/io/github/shinem/recyclerviewcachedemo/DemoListActivity.java:
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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