├── .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:
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2 | /local.properties
3 | /.idea/workspace.xml
4 | /.idea/libraries
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/ElasticScrollView.iml:
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/README.md:
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1 | # ElasticScrollView
2 | A scrollView,has elastic
3 |
4 | 
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 |
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/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 |
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/gradle.properties:
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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
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/gradle/wrapper/gradle-wrapper.jar:
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https://raw.githubusercontent.com/Kitdroid/ElasticScrollView/c673507527a2220f04dd74cca48b607113398d03/gradle/wrapper/gradle-wrapper.jar
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/gradle/wrapper/gradle-wrapper.properties:
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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 |
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/gradlew:
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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 |
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/gradlew.bat:
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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 |
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/image/elastic_sample.gif:
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https://raw.githubusercontent.com/Kitdroid/ElasticScrollView/c673507527a2220f04dd74cca48b607113398d03/image/elastic_sample.gif
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/library/build.gradle:
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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 |
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/library/library.iml:
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/library/proguard-rules.pro:
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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 |
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/library/src/androidTest/java/org/kitdroid/widget/ApplicationTest.java:
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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 | }
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/library/src/main/AndroidManifest.xml:
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1 |
3 |
4 |
8 |
9 |
10 |
11 |
12 |
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/library/src/main/java/org/kitdroid/widget/ElasticScrollView.java:
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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 |
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/library/src/main/res/values/attrs_elastic.xml:
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/library/src/main/res/values/strings.xml:
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1 |
2 | 1.2
3 |
4 |
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/sample/build.gradle:
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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 |
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/sample/proguard-rules.pro:
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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 |
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/sample/sample.iml:
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/sample/src/androidTest/java/org/kitdroid/sample/elastic/ApplicationTest.java:
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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 | }
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/sample/src/main/AndroidManifest.xml:
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/sample/src/main/java/org/kitdroid/sample/elastic/MainActivity.java:
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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 |
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/sample/src/main/res/layout/activity_main.xml:
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/sample/src/main/res/menu/menu_main.xml:
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/sample/src/main/res/mipmap-hdpi/ic_launcher.png:
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https://raw.githubusercontent.com/Kitdroid/ElasticScrollView/c673507527a2220f04dd74cca48b607113398d03/sample/src/main/res/mipmap-hdpi/ic_launcher.png
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/sample/src/main/res/mipmap-mdpi/ic_launcher.png:
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https://raw.githubusercontent.com/Kitdroid/ElasticScrollView/c673507527a2220f04dd74cca48b607113398d03/sample/src/main/res/mipmap-mdpi/ic_launcher.png
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/sample/src/main/res/mipmap-xhdpi/ic_launcher.png:
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https://raw.githubusercontent.com/Kitdroid/ElasticScrollView/c673507527a2220f04dd74cca48b607113398d03/sample/src/main/res/mipmap-xhdpi/ic_launcher.png
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/sample/src/main/res/mipmap-xxhdpi/ic_launcher.png:
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https://raw.githubusercontent.com/Kitdroid/ElasticScrollView/c673507527a2220f04dd74cca48b607113398d03/sample/src/main/res/mipmap-xxhdpi/ic_launcher.png
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/sample/src/main/res/values-w820dp/dimens.xml:
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1 |
2 |
5 | 64dp
6 |
7 |
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/sample/src/main/res/values/dimens.xml:
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1 |
2 |
3 | 16dp
4 | 16dp
5 |
6 |
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/sample/src/main/res/values/strings.xml:
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1 |
2 | ElasticScrollView
3 |
4 |
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/sample/src/main/res/values/styles.xml:
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1 |
2 |
3 |
4 |
7 |
8 |
9 |
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/settings.gradle:
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1 | include ':library', ':sample'
2 |
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