├── .gitignore ├── .idea ├── .name ├── compiler.xml ├── copyright │ └── profiles_settings.xml ├── encodings.xml ├── findbugs-idea.xml ├── gradle.xml ├── misc.xml ├── modules.xml ├── scopes │ └── scope_settings.xml └── vcs.xml ├── ElasticScrollView.iml ├── README.md ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── image └── elastic_sample.gif ├── library ├── build.gradle ├── library.iml ├── proguard-rules.pro └── src │ ├── androidTest │ └── java │ │ └── org │ │ └── kitdroid │ │ └── widget │ │ └── ApplicationTest.java │ └── main │ ├── AndroidManifest.xml │ ├── java │ └── org │ │ └── kitdroid │ │ └── widget │ │ └── ElasticScrollView.java │ └── res │ └── values │ ├── attrs_elastic.xml │ └── strings.xml ├── sample ├── build.gradle ├── proguard-rules.pro ├── sample.iml └── src │ ├── androidTest │ └── java │ │ └── org │ │ └── kitdroid │ │ └── sample │ │ └── elastic │ │ └── ApplicationTest.java │ └── main │ ├── AndroidManifest.xml │ ├── java │ └── org │ │ └── kitdroid │ │ └── sample │ │ └── elastic │ │ └── MainActivity.java │ └── res │ ├── layout │ └── activity_main.xml │ ├── menu │ └── menu_main.xml │ ├── mipmap-hdpi │ └── ic_launcher.png │ ├── mipmap-mdpi │ └── ic_launcher.png │ ├── mipmap-xhdpi │ └── ic_launcher.png │ ├── mipmap-xxhdpi │ └── ic_launcher.png │ ├── values-w820dp │ └── dimens.xml │ └── values │ ├── dimens.xml │ ├── strings.xml │ └── styles.xml └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 1 | .gradle 2 | /local.properties 3 | /.idea/workspace.xml 4 | /.idea/libraries 5 | .DS_Store 6 | /build 7 | */build 8 | -------------------------------------------------------------------------------- /.idea/.name: -------------------------------------------------------------------------------- 1 | ElasticScrollView -------------------------------------------------------------------------------- /.idea/compiler.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 22 | 23 | 24 | -------------------------------------------------------------------------------- /.idea/copyright/profiles_settings.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | -------------------------------------------------------------------------------- /.idea/encodings.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /.idea/findbugs-idea.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 13 | 31 | 197 | 210 | 219 | 220 | 221 | 222 | -------------------------------------------------------------------------------- /.idea/gradle.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 17 | 18 | 19 | 20 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 1.7 14 | 15 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | -------------------------------------------------------------------------------- /.idea/modules.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | -------------------------------------------------------------------------------- /.idea/scopes/scope_settings.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 5 | -------------------------------------------------------------------------------- /.idea/vcs.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /ElasticScrollView.iml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 37 | 203 | 216 | 217 | 218 | 219 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # ElasticScrollView 2 | A scrollView,has elastic 3 | 4 | ![Sample image](./image/elastic_sample.gif) 5 | 6 | ### Version 1.0 7 | 完成回弹功能 8 | 9 | ### Version 1.1 10 | 新添加两个的方法 11 | 12 | * setDamk() 13 | 设置滑动的阻力 14 | 15 | * setElasticVIew() 16 | 设置被拉伸的View.如果不设置或设置为null,则ScrollVie跟随手势移动 17 | 18 | ### Version 1.2 19 | 20 | * 使用NindOldAndroid动画效果 21 | * 修复Bug: elasticView向上滑动至height == -1时,被认为是wrap_content的问题 22 | * 添加elasticId属性 23 | 24 | Sample Code: 25 | ``` xml 26 | 30 | ``` 31 | -------------------------------------------------------------------------------- /build.gradle: -------------------------------------------------------------------------------- 1 | // Top-level build file where you can add configuration options common to all sub-projects/modules. 2 | 3 | buildscript { 4 | repositories { 5 | jcenter() 6 | } 7 | dependencies { 8 | classpath 'com.android.tools.build:gradle:1.0.1' 9 | 10 | // NOTE: Do not place your application dependencies here; they belong 11 | // in the individual module build.gradle files 12 | } 13 | } 14 | 15 | allprojects { 16 | repositories { 17 | jcenter() 18 | } 19 | } 20 | -------------------------------------------------------------------------------- /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 | # Default value: -Xmx10248m -XX:MaxPermSize=256m 13 | # org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8 14 | 15 | # When configured, Gradle will run in incubating parallel mode. 16 | # This option should only be used with decoupled projects. More details, visit 17 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 18 | # org.gradle.parallel=true -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Kitdroid/ElasticScrollView/c673507527a2220f04dd74cca48b607113398d03/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Wed Apr 10 15:27:10 PDT 2013 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-2.2.1-all.zip 7 | -------------------------------------------------------------------------------- /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 | # For Cygwin, ensure paths are in UNIX format before anything is touched. 46 | if $cygwin ; then 47 | [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"` 48 | fi 49 | 50 | # Attempt to set APP_HOME 51 | # Resolve links: $0 may be a link 52 | PRG="$0" 53 | # Need this for relative symlinks. 54 | while [ -h "$PRG" ] ; do 55 | ls=`ls -ld "$PRG"` 56 | link=`expr "$ls" : '.*-> \(.*\)$'` 57 | if expr "$link" : '/.*' > /dev/null; then 58 | PRG="$link" 59 | else 60 | PRG=`dirname "$PRG"`"/$link" 61 | fi 62 | done 63 | SAVED="`pwd`" 64 | cd "`dirname \"$PRG\"`/" >&- 65 | APP_HOME="`pwd -P`" 66 | cd "$SAVED" >&- 67 | 68 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 69 | 70 | # Determine the Java command to use to start the JVM. 71 | if [ -n "$JAVA_HOME" ] ; then 72 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 73 | # IBM's JDK on AIX uses strange locations for the executables 74 | JAVACMD="$JAVA_HOME/jre/sh/java" 75 | else 76 | JAVACMD="$JAVA_HOME/bin/java" 77 | fi 78 | if [ ! -x "$JAVACMD" ] ; then 79 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 80 | 81 | Please set the JAVA_HOME variable in your environment to match the 82 | location of your Java installation." 83 | fi 84 | else 85 | JAVACMD="java" 86 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 87 | 88 | Please set the JAVA_HOME variable in your environment to match the 89 | location of your Java installation." 90 | fi 91 | 92 | # Increase the maximum file descriptors if we can. 93 | if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then 94 | MAX_FD_LIMIT=`ulimit -H -n` 95 | if [ $? -eq 0 ] ; then 96 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 97 | MAX_FD="$MAX_FD_LIMIT" 98 | fi 99 | ulimit -n $MAX_FD 100 | if [ $? -ne 0 ] ; then 101 | warn "Could not set maximum file descriptor limit: $MAX_FD" 102 | fi 103 | else 104 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 105 | fi 106 | fi 107 | 108 | # For Darwin, add options to specify how the application appears in the dock 109 | if $darwin; then 110 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 111 | fi 112 | 113 | # For Cygwin, switch paths to Windows format before running java 114 | if $cygwin ; then 115 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 116 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 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 | # Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules 158 | function splitJvmOpts() { 159 | JVM_OPTS=("$@") 160 | } 161 | eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS 162 | JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME" 163 | 164 | exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@" 165 | -------------------------------------------------------------------------------- /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 | -------------------------------------------------------------------------------- /image/elastic_sample.gif: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Kitdroid/ElasticScrollView/c673507527a2220f04dd74cca48b607113398d03/image/elastic_sample.gif -------------------------------------------------------------------------------- /library/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.library' 2 | 3 | android { 4 | compileSdkVersion 21 5 | buildToolsVersion "21.1.2" 6 | 7 | defaultConfig { 8 | minSdkVersion 10 9 | targetSdkVersion 21 10 | versionCode 1 11 | versionName "1.0" 12 | } 13 | buildTypes { 14 | release { 15 | minifyEnabled false 16 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 17 | } 18 | } 19 | } 20 | 21 | dependencies { 22 | compile fileTree(dir: 'libs', include: ['*.jar']) 23 | compile 'com.android.support:appcompat-v7:21.0.3' 24 | compile 'com.nineoldandroids:library:2.4.0' 25 | } 26 | -------------------------------------------------------------------------------- /library/library.iml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 8 | 9 | 10 | 11 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 113 | 279 | 292 | 293 | 294 | 295 | -------------------------------------------------------------------------------- /library/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # By default, the flags in this file are appended to flags specified 3 | # in /Volumes/Files/Develop/android-sdk-macosx-24/tools/proguard/proguard-android.txt 4 | # You can edit the include path and order by changing the proguardFiles 5 | # directive in build.gradle. 6 | # 7 | # For more details, see 8 | # http://developer.android.com/guide/developing/tools/proguard.html 9 | 10 | # Add any project specific keep options here: 11 | 12 | # If your project uses WebView with JS, uncomment the following 13 | # and specify the fully qualified class name to the JavaScript interface 14 | # class: 15 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 16 | # public *; 17 | #} 18 | -------------------------------------------------------------------------------- /library/src/androidTest/java/org/kitdroid/widget/ApplicationTest.java: -------------------------------------------------------------------------------- 1 | package org.kitdroid.widget; 2 | 3 | import android.app.Application; 4 | import android.test.ApplicationTestCase; 5 | 6 | /** 7 | * Testing Fundamentals 8 | */ 9 | public class ApplicationTest extends ApplicationTestCase { 10 | public ApplicationTest() { 11 | super(Application.class); 12 | } 13 | } -------------------------------------------------------------------------------- /library/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 4 | 8 | 9 | 10 | 11 | 12 | -------------------------------------------------------------------------------- /library/src/main/java/org/kitdroid/widget/ElasticScrollView.java: -------------------------------------------------------------------------------- 1 | package org.kitdroid.widget; 2 | 3 | import android.content.Context; 4 | import android.content.res.TypedArray; 5 | import android.graphics.Rect; 6 | import android.util.AttributeSet; 7 | import android.view.MotionEvent; 8 | import android.view.View; 9 | import android.view.animation.OvershootInterpolator; 10 | import android.widget.ScrollView; 11 | 12 | import com.nineoldandroids.animation.ObjectAnimator; 13 | import com.nineoldandroids.animation.ValueAnimator; 14 | import com.nineoldandroids.animation.ValueAnimator.AnimatorUpdateListener; 15 | 16 | /** 17 | * ScrollView反弹效果的实现 18 | */ 19 | public class ElasticScrollView extends ScrollView { 20 | /** 21 | * 区分点击or滑动 22 | */ 23 | private static final int SHAKE_THRESHOLD_VALUE = 3; 24 | 25 | private static final int DAMP_COEFFICIENT = 2; 26 | 27 | private static final int ELASTIC_DELAY = 200; 28 | 29 | private static final int TOP_Y = 0; 30 | /** 31 | * 阻力 32 | */ 33 | private float damk = DAMP_COEFFICIENT; 34 | /** 35 | * 回弹延迟 36 | */ 37 | private int resetDelay = ELASTIC_DELAY; 38 | 39 | /** 40 | * ScrollView的子View (ScrollView只能有一个子View) 41 | */ 42 | private View mInnerView; 43 | private View elasticView; 44 | 45 | private float startY; 46 | private int originHeight; 47 | private Rect normalRect = new Rect(); 48 | private int elasticId; 49 | 50 | 51 | public ElasticScrollView(Context context, AttributeSet attrs) { 52 | super(context, attrs); 53 | readStyleAttributes(context, attrs, 0); 54 | } 55 | 56 | public ElasticScrollView(Context context, AttributeSet attrs, int defStyleAttr) { 57 | super(context, attrs, defStyleAttr); 58 | readStyleAttributes(context, attrs, 0); 59 | } 60 | 61 | @Override 62 | protected void onFinishInflate() { 63 | if (getChildCount() == 0) { 64 | return; 65 | } 66 | mInnerView = getChildAt(0); 67 | if (elasticId != 0) { 68 | View viewById = findViewById(elasticId); 69 | setElasticView(viewById); 70 | } 71 | } 72 | 73 | protected void readStyleAttributes(Context context, AttributeSet attrs, int defStyle) { 74 | 75 | TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.elastic_scroll, 0, defStyle); 76 | 77 | elasticId = a.getResourceId(R.styleable.elastic_scroll_elasticId, 0); 78 | 79 | a.recycle(); 80 | } 81 | 82 | public void setElasticView(View view) { 83 | refreshOriginHeight(view); 84 | elasticView = view; 85 | } 86 | 87 | public View getElasticView() { 88 | return elasticView; 89 | } 90 | 91 | public float getDamk() { 92 | return damk; 93 | } 94 | 95 | public void setDamk(float damk) { 96 | this.damk = damk; 97 | } 98 | 99 | public int getResetDelay() { 100 | return resetDelay; 101 | } 102 | 103 | public void setResetDelay(int resetDelay) { 104 | this.resetDelay = resetDelay; 105 | } 106 | 107 | @Override 108 | public boolean onInterceptTouchEvent(MotionEvent ev) { 109 | int action = ev.getAction(); 110 | 111 | switch (action) { 112 | case MotionEvent.ACTION_DOWN: { 113 | startY = ev.getY(); 114 | break; 115 | } 116 | case MotionEvent.ACTION_MOVE: { 117 | float currentY = ev.getY(); 118 | float scrollY = currentY - startY; 119 | 120 | return Math.abs(scrollY) > SHAKE_THRESHOLD_VALUE; 121 | } 122 | } 123 | return super.onInterceptTouchEvent(ev); 124 | } 125 | 126 | @Override 127 | public boolean onTouchEvent(MotionEvent ev) { 128 | if (mInnerView != null) { 129 | computeMove(ev); 130 | } 131 | return super.onTouchEvent(ev); 132 | } 133 | 134 | private void computeMove(MotionEvent event) { 135 | int action = event.getAction(); 136 | switch (action) { 137 | case MotionEvent.ACTION_UP: { 138 | doReset(); 139 | break; 140 | } 141 | case MotionEvent.ACTION_MOVE: { 142 | doMove(event); 143 | break; 144 | } 145 | default: 146 | break; 147 | } 148 | } 149 | 150 | private int computeDeltaY(MotionEvent event) { 151 | float currentY = event.getY(); 152 | 153 | int deltaY = (int) ((startY - currentY) / damk); 154 | startY = currentY; 155 | 156 | return deltaY; 157 | } 158 | 159 | private void doMove(MotionEvent event) { 160 | int deltaY = computeDeltaY(event); 161 | 162 | if (!isNeedMove(deltaY)) { 163 | return; 164 | } 165 | 166 | refreshNormalRect(); 167 | 168 | if (elasticView != null) { 169 | moveElasticView(deltaY); 170 | } else { 171 | moveInnerView(deltaY); 172 | } 173 | } 174 | 175 | private void refreshOriginHeight(View view) { 176 | if (elasticView != null) { 177 | android.view.ViewGroup.LayoutParams layoutParams = elasticView.getLayoutParams(); 178 | layoutParams.height = originHeight; 179 | elasticView.setLayoutParams(layoutParams); 180 | } 181 | if (null != view) { 182 | originHeight = view.getLayoutParams().height; 183 | } 184 | } 185 | 186 | private void refreshNormalRect() { 187 | if (!normalRect.isEmpty()) {// 保存正常的布局位置 188 | return; 189 | } 190 | normalRect.set(mInnerView.getLeft(), mInnerView.getTop(), mInnerView.getRight(), mInnerView.getBottom()); 191 | } 192 | 193 | private void moveInnerView(int deltaY) { 194 | mInnerView.layout(mInnerView.getLeft(), mInnerView.getTop() - deltaY, mInnerView.getRight(), mInnerView.getBottom() - deltaY); 195 | } 196 | 197 | private void moveElasticView(int deltaY) { 198 | android.view.ViewGroup.LayoutParams layoutParams = elasticView.getLayoutParams(); 199 | layoutParams.height = Math.max(0,layoutParams.height - deltaY); 200 | elasticView.setLayoutParams(layoutParams); 201 | } 202 | 203 | // 是否需要还原 204 | private boolean isNeedReset() { 205 | if (elasticView == null) { 206 | return !normalRect.isEmpty(); 207 | } else { 208 | return originHeight != elasticView.getLayoutParams().height; 209 | } 210 | } 211 | 212 | private void doReset() { 213 | boolean needReset = isNeedReset(); 214 | 215 | if (!needReset) { 216 | return; 217 | } 218 | 219 | if (elasticView != null) { 220 | resetElasticView(); 221 | } else { 222 | resetInnerView(); 223 | } 224 | } 225 | 226 | private void resetElasticView() { 227 | 228 | ValueAnimator animator = ObjectAnimator.ofInt(elasticView.getLayoutParams().height, originHeight); 229 | animator.setDuration(resetDelay); 230 | animator.setInterpolator(new OvershootInterpolator()); 231 | 232 | animator.addUpdateListener(new AnimatorUpdateListener() { 233 | @Override 234 | public void onAnimationUpdate(ValueAnimator animation) { 235 | int value = (Integer) animation.getAnimatedValue(); 236 | android.view.ViewGroup.LayoutParams layoutParams = elasticView.getLayoutParams(); 237 | layoutParams.height = value; 238 | elasticView.setLayoutParams(layoutParams); 239 | 240 | } 241 | }); 242 | animator.start(); 243 | 244 | } 245 | 246 | private void resetInnerView() { 247 | int moveY = mInnerView.getTop() - normalRect.top; 248 | ValueAnimator animator = ObjectAnimator.ofInt(moveY, 0); 249 | animator.setDuration(resetDelay); 250 | animator.setInterpolator(new OvershootInterpolator()); 251 | 252 | animator.addUpdateListener(new AnimatorUpdateListener() { 253 | @Override 254 | public void onAnimationUpdate(ValueAnimator animation) { 255 | int value = (Integer) animation.getAnimatedValue(); 256 | mInnerView.layout(normalRect.left, normalRect.top + value, normalRect.right, normalRect.bottom + value ); 257 | } 258 | }); 259 | animator.start(); 260 | 261 | } 262 | 263 | // 是否需要移动布局 264 | private boolean isNeedMove(int deltaY) { 265 | return deltaY == 0 ? false : (deltaY < 0 ? isNeedMoveTop() : isNeedMoveBottom()); 266 | } 267 | 268 | private boolean isNeedMoveTop() { 269 | int scrollY = getScrollY(); 270 | return (scrollY == TOP_Y); 271 | } 272 | 273 | private boolean isNeedMoveBottom() { 274 | int offset = mInnerView.getMeasuredHeight() - getHeight(); 275 | offset = (offset < 0) ? 0 : offset; 276 | 277 | int scrollY = getScrollY(); 278 | return (scrollY == offset); 279 | } 280 | } 281 | -------------------------------------------------------------------------------- /library/src/main/res/values/attrs_elastic.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | -------------------------------------------------------------------------------- /library/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | 1.2 3 | 4 | -------------------------------------------------------------------------------- /sample/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 21 5 | buildToolsVersion "21.1.2" 6 | 7 | defaultConfig { 8 | applicationId "org.kitdroid.sample.elastic" 9 | minSdkVersion 10 10 | targetSdkVersion 21 11 | versionCode 1 12 | versionName "1.0" 13 | } 14 | buildTypes { 15 | release { 16 | minifyEnabled false 17 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 18 | } 19 | } 20 | } 21 | 22 | dependencies { 23 | compile fileTree(dir: 'libs', include: ['*.jar']) 24 | compile 'com.android.support:appcompat-v7:21.0.3' 25 | compile project(':library') 26 | } 27 | -------------------------------------------------------------------------------- /sample/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # By default, the flags in this file are appended to flags specified 3 | # in /Volumes/Files/Develop/android-sdk-macosx-24/tools/proguard/proguard-android.txt 4 | # You can edit the include path and order by changing the proguardFiles 5 | # directive in build.gradle. 6 | # 7 | # For more details, see 8 | # http://developer.android.com/guide/developing/tools/proguard.html 9 | 10 | # Add any project specific keep options here: 11 | 12 | # If your project uses WebView with JS, uncomment the following 13 | # and specify the fully qualified class name to the JavaScript interface 14 | # class: 15 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 16 | # public *; 17 | #} 18 | -------------------------------------------------------------------------------- /sample/sample.iml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 8 | 9 | 10 | 11 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 113 | 279 | 292 | 293 | 294 | 295 | -------------------------------------------------------------------------------- /sample/src/androidTest/java/org/kitdroid/sample/elastic/ApplicationTest.java: -------------------------------------------------------------------------------- 1 | package org.kitdroid.sample.elastic; 2 | 3 | import android.app.Application; 4 | import android.test.ApplicationTestCase; 5 | 6 | /** 7 | * Testing Fundamentals 8 | */ 9 | public class ApplicationTest extends ApplicationTestCase { 10 | public ApplicationTest() { 11 | super(Application.class); 12 | } 13 | } -------------------------------------------------------------------------------- /sample/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 8 | 13 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | -------------------------------------------------------------------------------- /sample/src/main/java/org/kitdroid/sample/elastic/MainActivity.java: -------------------------------------------------------------------------------- 1 | package org.kitdroid.sample.elastic; 2 | 3 | import android.os.Bundle; 4 | import android.support.v7.app.ActionBarActivity; 5 | import android.view.Menu; 6 | import android.view.MenuItem; 7 | import android.widget.ImageView; 8 | import android.widget.SeekBar; 9 | import android.widget.SeekBar.OnSeekBarChangeListener; 10 | import android.widget.TextView; 11 | 12 | import org.kitdroid.widget.ElasticScrollView; 13 | 14 | public class MainActivity extends ActionBarActivity implements OnSeekBarChangeListener { 15 | 16 | private ElasticScrollView sv; 17 | private ImageView iv; 18 | private SeekBar sb; 19 | private TextView tvType; 20 | 21 | @Override 22 | protected void onCreate(Bundle savedInstanceState) { 23 | super.onCreate(savedInstanceState); 24 | setContentView(R.layout.activity_main); 25 | sv = (ElasticScrollView) findViewById(R.id.sv); 26 | iv = (ImageView)findViewById(R.id.iv); 27 | 28 | tvType = (TextView) findViewById(R.id.text_elastic_type); 29 | 30 | sb = (SeekBar) findViewById(R.id.seekBar1); 31 | sb.setOnSeekBarChangeListener(this); 32 | resetDamk(); 33 | } 34 | 35 | @Override 36 | public boolean onCreateOptionsMenu(Menu menu) { 37 | getMenuInflater().inflate(R.menu.menu_main, menu); 38 | return true; 39 | } 40 | 41 | @Override 42 | public boolean onOptionsItemSelected(MenuItem item) { 43 | switch (item.getItemId()){ 44 | case R.id.action_set_type:{ 45 | changeElasticType(); 46 | break; 47 | } 48 | case R.id.action_reset_damk:{ 49 | resetDamk(); 50 | break; 51 | } 52 | } 53 | return super.onOptionsItemSelected(item); 54 | } 55 | 56 | private void resetDamk() { 57 | sb.setProgress(10); 58 | } 59 | 60 | private void changeElasticType() { 61 | if(sv.getElasticView() == null){ 62 | sv.setElasticView(iv); 63 | tvType.setText("Elastic Type: ONE"); 64 | }else{ 65 | sv.setElasticView(null); 66 | tvType.setText("Elastic Type: ALL"); 67 | } 68 | } 69 | 70 | @Override 71 | public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { 72 | sv.setDamk(progress/10 +1); 73 | } 74 | 75 | @Override 76 | public void onStartTrackingTouch(SeekBar seekBar) { } 77 | 78 | @Override 79 | public void onStopTrackingTouch(SeekBar seekBar) { } 80 | 81 | } 82 | -------------------------------------------------------------------------------- /sample/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 7 | 8 | 14 | 15 | 21 | 22 | 28 | 29 | 35 | 40 | 44 | 45 | 46 | 47 | 48 | -------------------------------------------------------------------------------- /sample/src/main/res/menu/menu_main.xml: -------------------------------------------------------------------------------- 1 | 5 | 9 | 13 | 14 | -------------------------------------------------------------------------------- /sample/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Kitdroid/ElasticScrollView/c673507527a2220f04dd74cca48b607113398d03/sample/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /sample/src/main/res/mipmap-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Kitdroid/ElasticScrollView/c673507527a2220f04dd74cca48b607113398d03/sample/src/main/res/mipmap-mdpi/ic_launcher.png -------------------------------------------------------------------------------- /sample/src/main/res/mipmap-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Kitdroid/ElasticScrollView/c673507527a2220f04dd74cca48b607113398d03/sample/src/main/res/mipmap-xhdpi/ic_launcher.png -------------------------------------------------------------------------------- /sample/src/main/res/mipmap-xxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Kitdroid/ElasticScrollView/c673507527a2220f04dd74cca48b607113398d03/sample/src/main/res/mipmap-xxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /sample/src/main/res/values-w820dp/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 64dp 6 | 7 | -------------------------------------------------------------------------------- /sample/src/main/res/values/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 16dp 4 | 16dp 5 | 6 | -------------------------------------------------------------------------------- /sample/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | ElasticScrollView 3 | 4 | -------------------------------------------------------------------------------- /sample/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':library', ':sample' 2 | --------------------------------------------------------------------------------