├── app ├── .gitignore ├── src │ ├── main │ │ ├── res │ │ │ ├── values │ │ │ │ ├── strings.xml │ │ │ │ ├── colors.xml │ │ │ │ └── styles.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 │ │ │ ├── drawable │ │ │ │ ├── bg_round_blue.xml │ │ │ │ └── ic_launcher_background.xml │ │ │ ├── mipmap-anydpi-v26 │ │ │ │ ├── ic_launcher.xml │ │ │ │ └── ic_launcher_round.xml │ │ │ ├── layout │ │ │ │ ├── activity_main.xml │ │ │ │ └── item_recyclerview_tree.xml │ │ │ └── drawable-v24 │ │ │ │ └── ic_launcher_foreground.xml │ │ ├── java │ │ │ └── com │ │ │ │ └── kaelli │ │ │ │ └── androidtreerecyclerview │ │ │ │ ├── tree │ │ │ │ ├── TreeStateChangeListener.java │ │ │ │ ├── TreeItem.java │ │ │ │ └── TreeAdapter.java │ │ │ │ ├── App.java │ │ │ │ ├── utils │ │ │ │ ├── ScreenUtils.java │ │ │ │ └── ResourcesUtils.java │ │ │ │ └── MainActivity.java │ │ └── AndroidManifest.xml │ ├── test │ │ └── java │ │ │ └── com │ │ │ └── kaelli │ │ │ └── androidtreerecyclerview │ │ │ └── ExampleUnitTest.java │ └── androidTest │ │ └── java │ │ └── com │ │ └── kaelli │ │ └── androidtreerecyclerview │ │ └── ExampleInstrumentedTest.java ├── proguard-rules.pro └── build.gradle ├── settings.gradle ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── README.md ├── gradle.properties ├── .gitignore ├── gradlew.bat ├── gradlew └── LICENSE /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app' 2 | -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | AndroidTreeRecyclerView 3 | 4 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/KaelLi1989/AndroidTreeRecyclerView/HEAD/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/KaelLi1989/AndroidTreeRecyclerView/HEAD/app/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/KaelLi1989/AndroidTreeRecyclerView/HEAD/app/src/main/res/mipmap-mdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/KaelLi1989/AndroidTreeRecyclerView/HEAD/app/src/main/res/mipmap-xhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/KaelLi1989/AndroidTreeRecyclerView/HEAD/app/src/main/res/mipmap-xxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/KaelLi1989/AndroidTreeRecyclerView/HEAD/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/KaelLi1989/AndroidTreeRecyclerView/HEAD/app/src/main/res/mipmap-hdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/KaelLi1989/AndroidTreeRecyclerView/HEAD/app/src/main/res/mipmap-mdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xhdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/KaelLi1989/AndroidTreeRecyclerView/HEAD/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/KaelLi1989/AndroidTreeRecyclerView/HEAD/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/KaelLi1989/AndroidTreeRecyclerView/HEAD/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # AndroidTreeRecyclerView 2 | A RecyclerViewAdapter which can expand or contract. 3 | 4 | ![image](https://github.com/QingLian/README_Image/raw/master/AndroidTreeRecyclerViewDemo.gif) 5 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/bg_round_blue.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | -------------------------------------------------------------------------------- /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 | -------------------------------------------------------------------------------- /app/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #008577 4 | #00574B 5 | #D81B60 6 | 7 | -------------------------------------------------------------------------------- /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/java/com/kaelli/androidtreerecyclerview/tree/TreeStateChangeListener.java: -------------------------------------------------------------------------------- 1 | package com.kaelli.androidtreerecyclerview.tree; 2 | 3 | /** 4 | * Created by KaelLi on 2018/11/26. 5 | */ 6 | public interface TreeStateChangeListener { 7 | void onOpen(TreeItem treeItem, int position); 8 | void onClose(TreeItem treeItem, int position); 9 | } 10 | -------------------------------------------------------------------------------- /app/src/main/java/com/kaelli/androidtreerecyclerview/tree/TreeItem.java: -------------------------------------------------------------------------------- 1 | package com.kaelli.androidtreerecyclerview.tree; 2 | 3 | import java.util.List; 4 | 5 | /** 6 | * Created by KaelLi on 2018/11/26. 7 | */ 8 | public class TreeItem { 9 | public String title; 10 | public int itemLevel; 11 | public int itemState; 12 | public List child; 13 | } 14 | -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 10 | 11 | 12 | -------------------------------------------------------------------------------- /app/src/main/java/com/kaelli/androidtreerecyclerview/App.java: -------------------------------------------------------------------------------- 1 | package com.kaelli.androidtreerecyclerview; 2 | 3 | import android.app.Application; 4 | 5 | /** 6 | * Created by KaelLi on 2018/11/26. 7 | */ 8 | public class App extends Application { 9 | private static App mApp; 10 | @Override 11 | public void onCreate() { 12 | super.onCreate(); 13 | mApp = this; 14 | } 15 | 16 | public static synchronized App getInstance() { 17 | return mApp; 18 | } 19 | } 20 | -------------------------------------------------------------------------------- /app/src/test/java/com/kaelli/androidtreerecyclerview/ExampleUnitTest.java: -------------------------------------------------------------------------------- 1 | package com.kaelli.androidtreerecyclerview; 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](http://d.android.com/tools/testing). 11 | */ 12 | public class ExampleUnitTest { 13 | @Test 14 | public void addition_isCorrect() { 15 | assertEquals(4, 2 + 2); 16 | } 17 | } 18 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 8 | 13 | -------------------------------------------------------------------------------- /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 | -------------------------------------------------------------------------------- /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/com/kaelli/androidtreerecyclerview/ExampleInstrumentedTest.java: -------------------------------------------------------------------------------- 1 | package com.kaelli.androidtreerecyclerview; 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.assertEquals; 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 | assertEquals("com.kaelli.androidtreerecyclerview", appContext.getPackageName()); 24 | } 25 | } 26 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 6 | 7 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Built application files 2 | *.apk 3 | *.ap_ 4 | 5 | # Files for the ART/Dalvik VM 6 | *.dex 7 | 8 | # Java class files 9 | *.class 10 | 11 | # Generated files 12 | bin/ 13 | gen/ 14 | out/ 15 | 16 | # Gradle files 17 | .gradle/ 18 | build/ 19 | 20 | # Local configuration file (sdk path, etc) 21 | local.properties 22 | 23 | # Proguard folder generated by Eclipse 24 | proguard/ 25 | 26 | # Log Files 27 | *.log 28 | 29 | # Android Studio Navigation editor temp files 30 | .navigation/ 31 | 32 | # Android Studio captures folder 33 | captures/ 34 | 35 | # IntelliJ 36 | *.iml 37 | .idea/ 38 | 39 | # Keystore files 40 | # Uncomment the following line if you do not want to check your keystore files in. 41 | #*.jks 42 | 43 | # External native build folder generated in Android Studio 2.2 and later 44 | .externalNativeBuild 45 | 46 | # Google Services (e.g. APIs or Firebase) 47 | google-services.json 48 | 49 | # Freeline 50 | freeline.py 51 | freeline/ 52 | freeline_project_description.json 53 | 54 | # fastlane 55 | fastlane/report.xml 56 | fastlane/Preview.html 57 | fastlane/screenshots 58 | fastlane/test_output 59 | fastlane/readme.md 60 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 28 5 | defaultConfig { 6 | applicationId "com.kaelli.androidtreerecyclerview" 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 | annotationProcessor "com.jakewharton:butterknife-compiler:8.8.1" 27 | implementation 'com.jakewharton:butterknife:8.8.1' 28 | testImplementation 'junit:junit:4.12' 29 | androidTestImplementation 'com.android.support.test:runner:1.0.2' 30 | androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2' 31 | } 32 | -------------------------------------------------------------------------------- /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/java/com/kaelli/androidtreerecyclerview/utils/ScreenUtils.java: -------------------------------------------------------------------------------- 1 | package com.kaelli.androidtreerecyclerview.utils; 2 | 3 | import android.content.Context; 4 | import android.content.res.Configuration; 5 | import android.graphics.Point; 6 | import android.view.Display; 7 | import android.view.WindowManager; 8 | 9 | import com.kaelli.androidtreerecyclerview.App; 10 | 11 | /** 12 | * Created by KaelLi on 2018/11/26. 13 | */ 14 | public class ScreenUtils { 15 | /** 16 | * 判断当前设备是手机还是平板，代码来自 Google I/O App for Android 17 | * 18 | * @return 平板返回 True，手机返回 False 19 | */ 20 | public static boolean isTablet() { 21 | return (ResourcesUtils.getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_LARGE; 22 | } 23 | 24 | /** 25 | * 获取设备宽度 26 | * 27 | * @return 28 | */ 29 | public static int getScreenWidth() { 30 | return ResourcesUtils.getResources().getDisplayMetrics().widthPixels; 31 | } 32 | 33 | /** 34 | * 获取设备高度 35 | * 36 | * @return 37 | */ 38 | public static int getScreenHeight() { 39 | return ResourcesUtils.getResources().getDisplayMetrics().heightPixels; 40 | } 41 | 42 | /** 43 | * dp转px 44 | * @return 45 | */ 46 | public static int dip2px(float dipValue) { 47 | float m = ResourcesUtils.getResources().getDisplayMetrics().density; 48 | return (int) (dipValue * m + 0.5f); 49 | } 50 | 51 | /** 52 | * 获取StatusBar高度 53 | * @return StatusBarHeight 54 | */ 55 | public static int getStatusBarHeight() { 56 | //获取状态栏的高度 57 | int resourceId = ResourcesUtils.getResources().getIdentifier("status_bar_height", "dimen", "android"); 58 | return ResourcesUtils.getResources().getDimensionPixelSize(resourceId); 59 | } 60 | 61 | /** 62 | * 获取屏幕尺寸 63 | */ 64 | public static Point getScreenSize(){ 65 | WindowManager windowManager = (WindowManager) App.getInstance().getSystemService(Context.WINDOW_SERVICE); 66 | if (windowManager != null) { 67 | Display display = windowManager.getDefaultDisplay(); 68 | Point point = new Point(); 69 | display.getSize(point); 70 | return point; 71 | } else { 72 | return new Point(getScreenWidth(), getScreenHeight()); 73 | } 74 | } 75 | } 76 | -------------------------------------------------------------------------------- /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/src/main/res/layout/item_recyclerview_tree.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 8 | 14 | 23 | 36 | 37 | 48 | 54 | -------------------------------------------------------------------------------- /app/src/main/java/com/kaelli/androidtreerecyclerview/utils/ResourcesUtils.java: -------------------------------------------------------------------------------- 1 | package com.kaelli.androidtreerecyclerview.utils; 2 | 3 | import android.content.res.ColorStateList; 4 | import android.content.res.Resources; 5 | import android.graphics.drawable.Drawable; 6 | import android.support.annotation.StringRes; 7 | import android.text.TextUtils; 8 | import android.view.View; 9 | 10 | import com.kaelli.androidtreerecyclerview.App; 11 | 12 | import java.text.MessageFormat; 13 | 14 | /** 15 | * Created by KaelLi on 2018/11/26. 16 | */ 17 | public class ResourcesUtils { 18 | /** 19 | * 获取Resources 20 | * @return 资源Resources 21 | */ 22 | public static Resources getResources() { 23 | return App.getInstance().getResources(); 24 | } 25 | 26 | /** 27 | * 获取strings.xml资源文件字符串 28 | * 29 | * @param id 资源文件id 30 | * @return 资源文件对应字符串 31 | */ 32 | public static String getString(int id) { 33 | return getResources().getString(id); 34 | } 35 | 36 | /** 37 | * 获取strings.xml资源文件字符串数组 38 | * 39 | * @param id 资源文件id 40 | * @return 资源文件对应字符串数组 41 | */ 42 | public static String[] getStringArray(int id) { 43 | return getResources().getStringArray(id); 44 | } 45 | 46 | /** 47 | * 获取drawable资源文件图片 48 | * 49 | * @param id 资源文件id 50 | * @return 资源文件对应图片 51 | */ 52 | public static Drawable getDrawable(int id) { 53 | return getResources().getDrawable(id); 54 | } 55 | 56 | /** 57 | * 获取colors.xml资源文件颜色 58 | * 59 | * @param id 资源文件id 60 | * @return 资源文件对应颜色值 61 | */ 62 | public static int getColor(int id) { 63 | return getResources().getColor(id); 64 | } 65 | 66 | /** 67 | * 获取颜色的状态选择器 68 | * 69 | * @param id 资源文件id 70 | * @return 资源文件对应颜色状态 71 | */ 72 | public static ColorStateList getColorStateList(int id) { 73 | return getResources().getColorStateList(id); 74 | } 75 | 76 | /** 77 | * 获取dimens资源文件中具体像素值 78 | * 79 | * @param id 资源文件id 80 | * @return 资源文件对应像素值 81 | */ 82 | public static int getDimen(int id) { 83 | return getResources().getDimensionPixelSize(id);// 返回具体像素值 84 | } 85 | 86 | /** 87 | * 加载布局文件 88 | * 89 | * @param id 布局文件id 90 | * @return 布局view 91 | */ 92 | public static View inflate(int id) { 93 | return View.inflate(App.getInstance(), id, null); 94 | } 95 | 96 | /** 97 | * 获取字符串资源并格式化输出 98 | * 99 | * @param resId 100 | * @param params 101 | * @return 102 | */ 103 | public static String getString(@StringRes int resId, Object... params) { 104 | String _str = App.getInstance().getString(resId); 105 | if (TextUtils.isEmpty(_str)) { 106 | return ""; 107 | } 108 | if (params != null && params.length > 0) { 109 | for (int i = 0; i < params.length; i++) { 110 | params[i] += ""; 111 | } 112 | try { 113 | _str = _str.contains("{0}") ? MessageFormat.format(_str, params) : String.format(_str, params); 114 | } catch (Exception e) { 115 | e.printStackTrace(); 116 | } 117 | } 118 | return _str.replace("\u2028",""); 119 | } 120 | } 121 | -------------------------------------------------------------------------------- /app/src/main/java/com/kaelli/androidtreerecyclerview/MainActivity.java: -------------------------------------------------------------------------------- 1 | package com.kaelli.androidtreerecyclerview; 2 | 3 | import android.os.Bundle; 4 | import android.support.annotation.Nullable; 5 | import android.support.v7.app.AppCompatActivity; 6 | import android.support.v7.widget.LinearLayoutManager; 7 | import android.support.v7.widget.RecyclerView; 8 | 9 | import com.kaelli.androidtreerecyclerview.tree.TreeAdapter; 10 | import com.kaelli.androidtreerecyclerview.tree.TreeItem; 11 | 12 | import java.util.ArrayList; 13 | import java.util.List; 14 | 15 | /** 16 | * Created by KaelLi on 2018/11/22. 17 | */ 18 | public class MainActivity extends AppCompatActivity { 19 | private RecyclerView rvTree; 20 | 21 | @Override 22 | protected void onCreate(@Nullable Bundle savedInstanceState) { 23 | super.onCreate(savedInstanceState); 24 | setContentView(R.layout.activity_main); 25 | 26 | rvTree = findViewById(R.id.rvTree); 27 | TreeAdapter treeAdapter = new TreeAdapter(this, initList()); 28 | rvTree.setLayoutManager(new LinearLayoutManager(this)); 29 | rvTree.setAdapter(treeAdapter); 30 | } 31 | 32 | 33 | private List initList() { 34 | List list = new ArrayList<>(); 35 | 36 | TreeItem item_0_0 = new TreeItem(); 37 | item_0_0.title = "第0级，第0个"; 38 | item_0_0.child = new ArrayList<>(); 39 | 40 | TreeItem item_1_0 = new TreeItem(); 41 | item_1_0.title = "第1级，第0个"; 42 | item_1_0.child = new ArrayList<>(); 43 | TreeItem item_2_0 = new TreeItem(); 44 | item_2_0.title = "第2级，第0个"; 45 | TreeItem item_2_1 = new TreeItem(); 46 | item_2_1.title = "第2级，第1个"; 47 | TreeItem item_2_2 = new TreeItem(); 48 | item_2_2.title = "第2级，第2个"; 49 | item_1_0.child.add(item_2_0); 50 | item_1_0.child.add(item_2_1); 51 | item_1_0.child.add(item_2_2); 52 | item_0_0.child.add(item_1_0); 53 | 54 | TreeItem item_1_1 = new TreeItem(); 55 | item_1_1.title = "第1级，第1个"; 56 | item_1_1.child = new ArrayList<>(); 57 | TreeItem item_2_3 = new TreeItem(); 58 | item_2_3.title = "第2级，第3个"; 59 | TreeItem item_2_4 = new TreeItem(); 60 | item_2_4.title = "第2级，第4个"; 61 | item_2_3.child = new ArrayList<>(); 62 | TreeItem item_3_0 = new TreeItem(); 63 | item_3_0.title = "第3级，第0个"; 64 | TreeItem item_3_1 = new TreeItem(); 65 | item_3_1.title = "第3级，第1个"; 66 | TreeItem item_3_2 = new TreeItem(); 67 | item_3_2.title = "第3级，第2个"; 68 | item_2_3.child.add(item_3_0); 69 | item_2_3.child.add(item_3_1); 70 | item_2_3.child.add(item_3_2); 71 | item_1_1.child.add(item_2_3); 72 | item_1_1.child.add(item_2_4); 73 | item_0_0.child.add(item_1_1); 74 | list.add(item_0_0); 75 | 76 | 77 | TreeItem item_0_1 = new TreeItem(); 78 | item_0_1.title = "第0级，第1个"; 79 | item_0_1.child = new ArrayList<>(); 80 | 81 | TreeItem item_1_2 = new TreeItem(); 82 | item_1_2.title = "第1级，第2个"; 83 | item_1_2.child = new ArrayList<>(); 84 | TreeItem item_2_5 = new TreeItem(); 85 | item_2_5.title = "第2级，第5个"; 86 | TreeItem item_2_6 = new TreeItem(); 87 | item_2_6.title = "第2级，第6个"; 88 | TreeItem item_2_7 = new TreeItem(); 89 | item_2_7.title = "第2级，第7个"; 90 | item_1_2.child.add(item_2_5); 91 | item_1_2.child.add(item_2_6); 92 | item_1_2.child.add(item_2_7); 93 | item_0_1.child.add(item_1_2); 94 | 95 | TreeItem item_1_3 = new TreeItem(); 96 | item_1_3.title = "第1级，第3个"; 97 | item_1_3.child = new ArrayList<>(); 98 | TreeItem item_2_8 = new TreeItem(); 99 | item_2_8.title = "第2级，第8个"; 100 | TreeItem item_2_9 = new TreeItem(); 101 | item_2_9.title = "第2级，第9个"; 102 | item_2_8.child = new ArrayList<>(); 103 | TreeItem item_3_3 = new TreeItem(); 104 | item_3_3.title = "第3级，第3个"; 105 | TreeItem item_3_4 = new TreeItem(); 106 | item_3_4.title = "第3级，第4个"; 107 | TreeItem item_3_5 = new TreeItem(); 108 | item_3_5.title = "第3级，第5个"; 109 | item_2_8.child.add(item_3_3); 110 | item_2_8.child.add(item_3_4); 111 | item_2_8.child.add(item_3_5); 112 | item_1_3.child.add(item_2_8); 113 | item_1_3.child.add(item_2_9); 114 | item_0_1.child.add(item_1_3); 115 | list.add(item_0_1); 116 | 117 | return list; 118 | } 119 | } 120 | -------------------------------------------------------------------------------- /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/kaelli/androidtreerecyclerview/tree/TreeAdapter.java: -------------------------------------------------------------------------------- 1 | package com.kaelli.androidtreerecyclerview.tree; 2 | 3 | import android.content.Context; 4 | import android.support.annotation.NonNull; 5 | import android.support.constraint.ConstraintLayout; 6 | import android.support.v7.widget.RecyclerView; 7 | import android.view.LayoutInflater; 8 | import android.view.View; 9 | import android.view.ViewGroup; 10 | import android.widget.TextView; 11 | 12 | import com.kaelli.androidtreerecyclerview.R; 13 | import com.kaelli.androidtreerecyclerview.utils.ScreenUtils; 14 | 15 | import java.util.LinkedList; 16 | import java.util.List; 17 | 18 | import butterknife.BindView; 19 | import butterknife.ButterKnife; 20 | 21 | /** 22 | * Created by KaelLi on 2018/11/26. 23 | */ 24 | public class TreeAdapter extends RecyclerView.Adapter implements TreeStateChangeListener { 25 | private final static int ITEM_STATE_CLOSE = 0; 26 | private final static int ITEM_STATE_OPEN = 1; 27 | private Context mContext; 28 | private List mList; 29 | 30 | public TreeAdapter(Context context, List list) { 31 | initList(list, 0); 32 | this.mList = new LinkedList<>(); 33 | this.mContext = context; 34 | this.mList.addAll(list); 35 | } 36 | 37 | private void initList(List list, int level) { 38 | if (list == null || list.size() <= 0) return; 39 | for (TreeItem item: list) { 40 | item.itemLevel = level; 41 | if (item.child != null && item.child.size() > 0) { 42 | initList(item.child, level + 1); 43 | } 44 | } 45 | } 46 | 47 | @NonNull 48 | @Override 49 | public ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) { 50 | return new ViewHolder(LayoutInflater.from(mContext).inflate(R.layout.item_recyclerview_tree, viewGroup, false)); 51 | } 52 | 53 | @Override 54 | public void onBindViewHolder(@NonNull final ViewHolder viewHolder, int i) { 55 | final TreeItem treeItem = mList.get(i); 56 | viewHolder.mTextView.setText(treeItem.title); 57 | if (i == mList.size() - 1) { 58 | viewHolder.mDivider.setVisibility(View.VISIBLE); 59 | } else if (mList.get(i + 1).itemLevel == 0) { 60 | viewHolder.mDivider.setVisibility(View.VISIBLE); 61 | } else { 62 | viewHolder.mDivider.setVisibility(View.INVISIBLE); 63 | } 64 | 65 | if (treeItem.child != null && treeItem.child.size() > 0) { 66 | viewHolder.tvState.setVisibility(View.VISIBLE); 67 | if (treeItem.itemState == ITEM_STATE_OPEN) { 68 | viewHolder.tvState.setText("-"); 69 | } else { 70 | viewHolder.tvState.setText("+"); 71 | } 72 | } else { 73 | viewHolder.tvState.setVisibility(View.INVISIBLE); 74 | } 75 | 76 | ConstraintLayout.LayoutParams lp = (ConstraintLayout.LayoutParams)viewHolder.mIndicator.getLayoutParams(); 77 | lp.width = (int)(ScreenUtils.getScreenWidth() * (0.044444 - treeItem.itemLevel * 0.011111)); 78 | lp.height = (int)(ScreenUtils.getScreenWidth() * (0.044444 - treeItem.itemLevel * 0.011111)); 79 | viewHolder.mIndicator.setLayoutParams(lp); 80 | 81 | viewHolder.itemView.setOnClickListener(new View.OnClickListener() { 82 | @Override 83 | public void onClick(View v) { 84 | if (treeItem.itemState == ITEM_STATE_CLOSE) { 85 | onOpen(treeItem, viewHolder.getAdapterPosition()); 86 | } else { 87 | onClose(treeItem, viewHolder.getAdapterPosition()); 88 | } 89 | } 90 | }); 91 | } 92 | 93 | @Override 94 | public int getItemCount() { 95 | return mList.size(); 96 | } 97 | 98 | @Override 99 | public void onOpen(TreeItem treeItem, int position) { 100 | if (treeItem.child != null && treeItem.child.size() > 0) { 101 | mList.addAll(position + 1, treeItem.child); 102 | treeItem.itemState = ITEM_STATE_OPEN; 103 | notifyItemRangeInserted(position + 1, treeItem.child.size()); 104 | notifyItemChanged(position); 105 | } 106 | } 107 | 108 | @Override 109 | public void onClose(TreeItem treeItem, int position) { 110 | if (treeItem.child != null && treeItem.child.size() > 0) { 111 | int nextSameOrHigherLevelNodePosition = mList.size() - 1; 112 | if (mList.size() > position + 1) { 113 | for (int i = position + 1; i < mList.size(); i++) { 114 | if (mList.get(i).itemLevel <= mList.get(position).itemLevel) { 115 | nextSameOrHigherLevelNodePosition = i - 1; 116 | break; 117 | } 118 | } 119 | closeChild(mList.get(position)); 120 | if (nextSameOrHigherLevelNodePosition > position) { 121 | mList.subList(position + 1, nextSameOrHigherLevelNodePosition + 1).clear(); 122 | treeItem.itemState = ITEM_STATE_CLOSE; 123 | notifyItemRangeRemoved(position + 1, nextSameOrHigherLevelNodePosition - position); 124 | notifyItemChanged(position); 125 | } 126 | } 127 | } 128 | } 129 | 130 | private void closeChild(TreeItem treeItem) { 131 | if (treeItem.child != null) { 132 | for (TreeItem child: treeItem.child) { 133 | child.itemState = ITEM_STATE_CLOSE; 134 | closeChild(child); 135 | } 136 | } 137 | } 138 | 139 | class ViewHolder extends RecyclerView.ViewHolder { 140 | @BindView(R.id.vIndicator) View mIndicator; 141 | @BindView(R.id.tvState) TextView tvState; 142 | @BindView(R.id.tvTitle) TextView mTextView; 143 | @BindView(R.id.vDivider) View mDivider; 144 | 145 | ViewHolder(@NonNull View itemView) { 146 | super(itemView); 147 | ButterKnife.bind(this, itemView); 148 | } 149 | } 150 | } 151 | -------------------------------------------------------------------------------- /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 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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