├── 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 │ │ │ ├── mipmap-anydpi-v26 │ │ │ │ ├── ic_launcher.xml │ │ │ │ └── ic_launcher_round.xml │ │ │ ├── layout │ │ │ │ ├── item_text_layout.xml │ │ │ │ └── activity_main.xml │ │ │ ├── drawable-v24 │ │ │ │ └── ic_launcher_foreground.xml │ │ │ └── drawable │ │ │ │ └── ic_launcher_background.xml │ │ ├── java │ │ │ └── zzq │ │ │ │ └── rvsuspensionbartest │ │ │ │ ├── Post.java │ │ │ │ ├── TextViewBean.java │ │ │ │ ├── Comment.java │ │ │ │ ├── TextViewBinder.java │ │ │ │ └── MainActivity.java │ │ └── AndroidManifest.xml │ ├── test │ │ └── java │ │ │ └── zzq │ │ │ └── rvsuspensionbartest │ │ │ └── ExampleUnitTest.java │ └── androidTest │ │ └── java │ │ └── zzq │ │ └── rvsuspensionbartest │ │ └── ExampleInstrumentedTest.java ├── proguard-rules.pro └── build.gradle ├── settings.gradle ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── .idea ├── vcs.xml ├── modules.xml ├── runConfigurations.xml └── misc.xml ├── README.md ├── gradle.properties ├── .gitignore ├── gradlew.bat └── gradlew /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app' 2 | -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | RVSuspensionBarTest 3 | 4 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/374901588/RVSuspensionBarTest/HEAD/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/374901588/RVSuspensionBarTest/HEAD/app/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- 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-------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Fri Mar 30 18:18:57 CST 2018 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip 7 | -------------------------------------------------------------------------------- /app/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #3F51B5 4 | #303F9F 5 | #FF4081 6 | #ffffff 7 | 8 | -------------------------------------------------------------------------------- /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 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # RVSuspensionBarTest 2 | 3 | ### 博客链接：[RecyclerView Item 的悬浮效果（吸附效果）的实现](https://blog.csdn.net/OneDeveloper/article/details/79760228) 4 | 5 | **效果展示：** 6 | 7 | 8 | ![展示效果](https://img-blog.csdn.net/20180330172900538?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L09uZURldmVsb3Blcg==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70) 9 | -------------------------------------------------------------------------------- /app/src/main/java/zzq/rvsuspensionbartest/Post.java: -------------------------------------------------------------------------------- 1 | package zzq.rvsuspensionbartest; 2 | 3 | import java.util.List; 4 | 5 | /** 6 | * Created by zengzhiqi on 2018/3/29. 7 | */ 8 | 9 | public class Post extends TextViewBean { 10 | public List comments; 11 | 12 | public Post(String text) { 13 | super(text); 14 | } 15 | } 16 | -------------------------------------------------------------------------------- /.idea/modules.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 10 | 11 | 12 | -------------------------------------------------------------------------------- /app/src/main/java/zzq/rvsuspensionbartest/TextViewBean.java: -------------------------------------------------------------------------------- 1 | package zzq.rvsuspensionbartest; 2 | 3 | /** 4 | * Created by zengzhiqi on 2018/3/27. 5 | */ 6 | 7 | public class TextViewBean { 8 | protected String text; 9 | 10 | public TextViewBean(String text) { 11 | this.text = text; 12 | } 13 | 14 | public String getText() { 15 | return text; 16 | } 17 | 18 | public void setText(String text) { 19 | this.text = text; 20 | } 21 | } 22 | -------------------------------------------------------------------------------- /app/src/main/res/layout/item_text_layout.xml: -------------------------------------------------------------------------------- 1 | 2 | 12 | 13 | -------------------------------------------------------------------------------- /app/src/test/java/zzq/rvsuspensionbartest/ExampleUnitTest.java: -------------------------------------------------------------------------------- 1 | package zzq.rvsuspensionbartest; 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() throws Exception { 15 | assertEquals(4, 2 + 2); 16 | } 17 | } -------------------------------------------------------------------------------- /.idea/runConfigurations.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 11 | 12 | -------------------------------------------------------------------------------- /app/src/main/java/zzq/rvsuspensionbartest/Comment.java: -------------------------------------------------------------------------------- 1 | package zzq.rvsuspensionbartest; 2 | 3 | /** 4 | * Created by zengzhiqi on 2018/3/29. 5 | */ 6 | 7 | public class Comment extends TextViewBean{ 8 | private int parentPostPosition; 9 | 10 | public Comment(String text,int parentPostPosition) { 11 | super(text); 12 | this.parentPostPosition = parentPostPosition; 13 | } 14 | 15 | public int getParentPostPosition() { 16 | return parentPostPosition; 17 | } 18 | 19 | public void setParentPostPosition(int parentPostPosition) { 20 | this.parentPostPosition = parentPostPosition; 21 | } 22 | } 23 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 8 | 9 | 14 | 15 | 16 | 17 | -------------------------------------------------------------------------------- /gradle.properties: -------------------------------------------------------------------------------- 1 | # Project-wide Gradle settings. 2 | 3 | # IDE (e.g. Android Studio) users: 4 | # Gradle settings configured through the IDE *will override* 5 | # any settings specified in this file. 6 | 7 | # For more details on how to configure your build environment visit 8 | # http://www.gradle.org/docs/current/userguide/build_environment.html 9 | 10 | # Specifies the JVM arguments used for the daemon process. 11 | # The setting is particularly useful for tweaking memory settings. 12 | org.gradle.jvmargs=-Xmx1536m 13 | 14 | # When configured, Gradle will run in incubating parallel mode. 15 | # This option should only be used with decoupled projects. More details, visit 16 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 17 | # org.gradle.parallel=true 18 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | -------------------------------------------------------------------------------- /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/zzq/rvsuspensionbartest/ExampleInstrumentedTest.java: -------------------------------------------------------------------------------- 1 | package zzq.rvsuspensionbartest; 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() throws Exception { 21 | // Context of the app under test. 22 | Context appContext = InstrumentationRegistry.getTargetContext(); 23 | 24 | assertEquals("zzq.rvsuspensionbartest", appContext.getPackageName()); 25 | } 26 | } 27 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 26 5 | defaultConfig { 6 | applicationId "zzq.rvsuspensionbartest" 7 | minSdkVersion 14 8 | targetSdkVersion 26 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-v7:26.1.0' 24 | implementation('me.drakeet.multitype:multitype:3.4.4', { 25 | exclude group: 'com.android.support' 26 | }) 27 | implementation 'com.android.support:recyclerview-v7:26.1.0' 28 | } 29 | -------------------------------------------------------------------------------- /.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/workspace.xml 38 | .idea/tasks.xml 39 | .idea/gradle.xml 40 | .idea/dictionaries 41 | .idea/libraries 42 | 43 | # Keystore files 44 | *.jks 45 | 46 | # External native build folder generated in Android Studio 2.2 and later 47 | .externalNativeBuild 48 | 49 | # Google Services (e.g. APIs or Firebase) 50 | google-services.json 51 | 52 | # Freeline 53 | freeline.py 54 | freeline/ 55 | freeline_project_description.json 56 | -------------------------------------------------------------------------------- /app/src/main/java/zzq/rvsuspensionbartest/TextViewBinder.java: -------------------------------------------------------------------------------- 1 | package zzq.rvsuspensionbartest; 2 | 3 | import android.content.res.Resources; 4 | import android.support.annotation.NonNull; 5 | import android.support.v7.widget.RecyclerView; 6 | import android.view.Gravity; 7 | import android.view.LayoutInflater; 8 | import android.view.View; 9 | import android.view.ViewGroup; 10 | import android.widget.TextView; 11 | 12 | import me.drakeet.multitype.ItemViewBinder; 13 | 14 | /** 15 | * Created by zengzhiqi on 2018/3/27. 16 | */ 17 | 18 | public class TextViewBinder extends ItemViewBinder { 19 | 20 | @NonNull 21 | @Override 22 | protected ViewHoler onCreateViewHolder(@NonNull LayoutInflater inflater, @NonNull ViewGroup parent) { 23 | View view = inflater.inflate(R.layout.item_text_layout, parent, false); 24 | return new ViewHoler(view); 25 | } 26 | 27 | @Override 28 | protected void onBindViewHolder(@NonNull ViewHoler holder, @NonNull TextViewBean item) { 29 | holder.textView.setText(item.getText()); 30 | Resources resources= holder.textView.getContext().getResources(); 31 | if (item instanceof Post) { 32 | holder.textView.setGravity(Gravity.LEFT); 33 | holder.textView.setBackgroundColor(resources.getColor(R.color.colorAccent)); 34 | } else { 35 | holder.textView.setGravity(Gravity.RIGHT); 36 | holder.textView.setBackgroundColor(resources.getColor(R.color.colorPrimary)); 37 | } 38 | } 39 | 40 | static class ViewHoler extends RecyclerView.ViewHolder{ 41 | @NonNull 42 | final TextView textView; 43 | 44 | public ViewHoler(View itemView) { 45 | super(itemView); 46 | textView= (TextView) itemView; 47 | } 48 | } 49 | 50 | 51 | } 52 | -------------------------------------------------------------------------------- /app/src/main/res/drawable-v24/ic_launcher_foreground.xml: -------------------------------------------------------------------------------- 1 | 7 | 12 | 13 | 19 | 22 | 25 | 26 | 27 | 28 | 34 | 35 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 16 | 26 | 27 | 28 | 29 | 30 | 31 | 33 | 34 | 35 | 36 | 37 | 1.8 38 | 39 | 44 | 45 | 46 | 47 | 48 | 49 | -------------------------------------------------------------------------------- /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 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 12 | set DEFAULT_JVM_OPTS= 13 | 14 | set DIRNAME=%~dp0 15 | if "%DIRNAME%" == "" set DIRNAME=. 16 | set APP_BASE_NAME=%~n0 17 | set APP_HOME=%DIRNAME% 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 Windowz variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | if "%@eval[2+2]" == "4" goto 4NT_args 53 | 54 | :win9xME_args 55 | @rem Slurp the command line arguments. 56 | set CMD_LINE_ARGS= 57 | set _SKIP=2 58 | 59 | :win9xME_args_slurp 60 | if "x%~1" == "x" goto execute 61 | 62 | set CMD_LINE_ARGS=%* 63 | goto execute 64 | 65 | :4NT_args 66 | @rem Get arguments from the 4NT Shell from JP Software 67 | set CMD_LINE_ARGS=%$ 68 | 69 | :execute 70 | @rem Setup the command line 71 | 72 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 73 | 74 | @rem Execute Gradle 75 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 76 | 77 | :end 78 | @rem End local scope for the variables with windows NT shell 79 | if "%ERRORLEVEL%"=="0" goto mainEnd 80 | 81 | :fail 82 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 83 | rem the _cmd.exe /c_ return code! 84 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 85 | exit /b 1 86 | 87 | :mainEnd 88 | if "%OS%"=="Windows_NT" endlocal 89 | 90 | :omega 91 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 10 | DEFAULT_JVM_OPTS="" 11 | 12 | APP_NAME="Gradle" 13 | APP_BASE_NAME=`basename "$0"` 14 | 15 | # Use the maximum available, or set MAX_FD != -1 to use that value. 16 | MAX_FD="maximum" 17 | 18 | warn ( ) { 19 | echo "$*" 20 | } 21 | 22 | die ( ) { 23 | echo 24 | echo "$*" 25 | echo 26 | exit 1 27 | } 28 | 29 | # OS specific support (must be 'true' or 'false'). 30 | cygwin=false 31 | msys=false 32 | darwin=false 33 | case "`uname`" in 34 | CYGWIN* ) 35 | cygwin=true 36 | ;; 37 | Darwin* ) 38 | darwin=true 39 | ;; 40 | MINGW* ) 41 | msys=true 42 | ;; 43 | esac 44 | 45 | # Attempt to set APP_HOME 46 | # Resolve links: $0 may be a link 47 | PRG="$0" 48 | # Need this for relative symlinks. 49 | while [ -h "$PRG" ] ; do 50 | ls=`ls -ld "$PRG"` 51 | link=`expr "$ls" : '.*-> \(.*\)$'` 52 | if expr "$link" : '/.*' > /dev/null; then 53 | PRG="$link" 54 | else 55 | PRG=`dirname "$PRG"`"/$link" 56 | fi 57 | done 58 | SAVED="`pwd`" 59 | cd "`dirname \"$PRG\"`/" >/dev/null 60 | APP_HOME="`pwd -P`" 61 | cd "$SAVED" >/dev/null 62 | 63 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 64 | 65 | # Determine the Java command to use to start the JVM. 66 | if [ -n "$JAVA_HOME" ] ; then 67 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 68 | # IBM's JDK on AIX uses strange locations for the executables 69 | JAVACMD="$JAVA_HOME/jre/sh/java" 70 | else 71 | JAVACMD="$JAVA_HOME/bin/java" 72 | fi 73 | if [ ! -x "$JAVACMD" ] ; then 74 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 75 | 76 | Please set the JAVA_HOME variable in your environment to match the 77 | location of your Java installation." 78 | fi 79 | else 80 | JAVACMD="java" 81 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 82 | 83 | Please set the JAVA_HOME variable in your environment to match the 84 | location of your Java installation." 85 | fi 86 | 87 | # Increase the maximum file descriptors if we can. 88 | if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then 89 | MAX_FD_LIMIT=`ulimit -H -n` 90 | if [ $? -eq 0 ] ; then 91 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 92 | MAX_FD="$MAX_FD_LIMIT" 93 | fi 94 | ulimit -n $MAX_FD 95 | if [ $? -ne 0 ] ; then 96 | warn "Could not set maximum file descriptor limit: $MAX_FD" 97 | fi 98 | else 99 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 100 | fi 101 | fi 102 | 103 | # For Darwin, add options to specify how the application appears in the dock 104 | if $darwin; then 105 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 106 | fi 107 | 108 | # For Cygwin, switch paths to Windows format before running java 109 | if $cygwin ; then 110 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 111 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 112 | JAVACMD=`cygpath --unix "$JAVACMD"` 113 | 114 | # We build the pattern for arguments to be converted via cygpath 115 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 116 | SEP="" 117 | for dir in $ROOTDIRSRAW ; do 118 | ROOTDIRS="$ROOTDIRS$SEP$dir" 119 | SEP="|" 120 | done 121 | OURCYGPATTERN="(^($ROOTDIRS))" 122 | # Add a user-defined pattern to the cygpath arguments 123 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 124 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 125 | fi 126 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 127 | i=0 128 | for arg in "$@" ; do 129 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 130 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 131 | 132 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 133 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 134 | else 135 | eval `echo args$i`="\"$arg\"" 136 | fi 137 | i=$((i+1)) 138 | done 139 | case $i in 140 | (0) set -- ;; 141 | (1) set -- "$args0" ;; 142 | (2) set -- "$args0" "$args1" ;; 143 | (3) set -- "$args0" "$args1" "$args2" ;; 144 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 145 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 146 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 147 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 148 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 149 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 150 | esac 151 | fi 152 | 153 | # Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules 154 | function splitJvmOpts() { 155 | JVM_OPTS=("$@") 156 | } 157 | eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS 158 | JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME" 159 | 160 | exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@" 161 | -------------------------------------------------------------------------------- /app/src/main/java/zzq/rvsuspensionbartest/MainActivity.java: -------------------------------------------------------------------------------- 1 | package zzq.rvsuspensionbartest; 2 | 3 | import android.os.Bundle; 4 | import android.support.v7.app.AppCompatActivity; 5 | import android.support.v7.widget.LinearLayoutManager; 6 | import android.support.v7.widget.RecyclerView; 7 | import android.view.View; 8 | import android.widget.TextView; 9 | 10 | import java.util.ArrayList; 11 | import java.util.List; 12 | import java.util.Random; 13 | 14 | import me.drakeet.multitype.Items; 15 | import me.drakeet.multitype.MultiTypeAdapter; 16 | 17 | public class MainActivity extends AppCompatActivity { 18 | private MultiTypeAdapter adapter; 19 | 20 | private RecyclerView rv; 21 | private TextView mSuspensionBar; 22 | 23 | private int mCurrentPosition = 0; 24 | 25 | @Override 26 | protected void onCreate(Bundle savedInstanceState) { 27 | super.onCreate(savedInstanceState); 28 | setContentView(R.layout.activity_main); 29 | 30 | rv = findViewById(R.id.rv); 31 | mSuspensionBar = findViewById(R.id.tv); 32 | // mSuspensionBar.setAlpha(0.5f); 33 | 34 | adapter = new MultiTypeAdapter(); 35 | 36 | //模拟数据 37 | List list = new ArrayList<>(); 38 | int index = 0; 39 | int parentPostPos; 40 | Random random = new Random(); 41 | for (int i = 0; i < 10; i++) { 42 | Post post = new Post("pos = " + index); 43 | parentPostPos = index; 44 | 45 | list.add(post); 46 | index++; 47 | 48 | int k = random.nextInt(5); 49 | post.comments = new ArrayList<>(); 50 | for (int j = 0; j < k; j++) { 51 | Comment comment = new Comment("pos = " + index, parentPostPos); 52 | post.comments.add(comment); 53 | index++; 54 | } 55 | } 56 | final Items items = new Items(); 57 | items.addAll(flattenData(list)); 58 | adapter.setItems(items); 59 | 60 | adapter.register(Post.class, new TextViewBinder()); 61 | adapter.register(Comment.class, new TextViewBinder()); 62 | 63 | adapter.setItems(items); 64 | rv.setAdapter(adapter); 65 | 66 | rv.addOnScrollListener(new RecyclerView.OnScrollListener() { 67 | LinearLayoutManager linearLayoutManager = (LinearLayoutManager) rv.getLayoutManager(); 68 | int mSuspensionHeight; 69 | 70 | @Override 71 | public void onScrolled(RecyclerView recyclerView, int dx, int dy) { 72 | super.onScrolled(recyclerView, dx, dy); 73 | 74 | mSuspensionHeight = mSuspensionBar.getHeight(); 75 | 76 | int firstVisPos = linearLayoutManager.findFirstVisibleItemPosition(); 77 | 78 | Object firstVisibleItem = items.get(firstVisPos); 79 | Object nextItem = items.get(firstVisPos + 1); 80 | View nextView = linearLayoutManager.findViewByPosition(firstVisPos + 1); 81 | 82 | 83 | if (dy > 0) { 84 | if (nextItem instanceof Post) { 85 | 86 | if (nextView.getTop() <= mSuspensionHeight) { 87 | //被顶掉的效果 88 | mSuspensionBar.setY(-(mSuspensionHeight - nextView.getTop())); 89 | } else { 90 | mSuspensionBar.setY(0); 91 | } 92 | } 93 | 94 | //判断是否需要更新悬浮条 95 | if (mCurrentPosition != firstVisPos && firstVisibleItem instanceof Post) { 96 | mCurrentPosition = firstVisPos; 97 | //更新悬浮条 98 | updateSuspensionBar(); 99 | mSuspensionBar.setY(0); 100 | } 101 | } else { 102 | // 1、nextItem -> Post and firstVisibleItem -> Comment mCurrentPosition = ((Comment) firstVisibleItem).getParentPostPosition() 103 | // 2、nextItem -> Post and firstVisibleItem -> Post mCurrentPosition = firstVisPos 104 | // 3、nextItem -> Comment and firstVisibleItem -> Comment mSuspensionBar 不动 105 | // 4、nextItem -> Comment and firstVisibleItem -> Post mSuspensionBar 不动 106 | if (nextItem instanceof Post) { 107 | mCurrentPosition = firstVisibleItem instanceof Post ? firstVisPos : ((Comment) firstVisibleItem).getParentPostPosition(); 108 | updateSuspensionBar(); 109 | 110 | if (nextView.getTop() <= mSuspensionHeight) { 111 | //被顶掉的效果 112 | mSuspensionBar.setY(-(mSuspensionHeight - nextView.getTop())); 113 | } else { 114 | mSuspensionBar.setY(0); 115 | } 116 | } 117 | } 118 | } 119 | }); 120 | 121 | //更新悬浮条 122 | updateSuspensionBar(); 123 | 124 | rv.setAdapter(adapter); 125 | 126 | 127 | } 128 | 129 | private void updateSuspensionBar() { 130 | String s = ((TextViewBean) adapter.getItems().get(mCurrentPosition)).getText(); 131 | mSuspensionBar.setText(s); 132 | } 133 | 134 | private List flattenData(List posts) { 135 | final List items = new ArrayList<>(); 136 | for (Post post : posts) { 137 | /* 将 post 加进 items，Binder 内部拿到它的时候， 138 | * 我们无视它的 comments 内容即可 */ 139 | items.add(post); 140 | /* 紧接着将 comments 拿出来插入进 items， 141 | * 评论就能正好处于该条 post 下面 */ 142 | items.addAll(post.comments); 143 | } 144 | return items; 145 | } 146 | } -------------------------------------------------------------------------------- /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 | --------------------------------------------------------------------------------