├── .gitignore
├── .idea
├── codeStyles
│ └── Project.xml
├── inspectionProfiles
│ └── Project_Default.xml
├── markdown-navigator.xml
├── markdown-navigator
│ └── profiles_settings.xml
├── misc.xml
├── modules.xml
├── runConfigurations.xml
└── vcs.xml
├── LICENSE
├── README.md
├── build.gradle
├── gradle.properties
├── gradle
└── wrapper
│ ├── gradle-wrapper.jar
│ └── gradle-wrapper.properties
├── gradlew
├── gradlew.bat
├── randomdraglayout
├── .gitignore
├── build.gradle
├── proguard-rules.pro
└── src
│ ├── androidTest
│ └── java
│ │ └── com
│ │ └── wuyr
│ │ └── randomdraglayout
│ │ └── ExampleInstrumentedTest.java
│ ├── main
│ ├── AndroidManifest.xml
│ ├── java
│ │ └── com
│ │ │ └── wuyr
│ │ │ └── randomdraglayout
│ │ │ ├── GhostView.java
│ │ │ └── RandomDragLayout.java
│ └── res
│ │ └── values
│ │ └── strings.xml
│ └── test
│ └── java
│ └── com
│ └── wuyr
│ └── randomdraglayout
│ └── ExampleUnitTest.java
└── settings.gradle
/.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/assetWizardSettings.xml
41 | .idea/dictionaries
42 | .idea/libraries
43 | .idea/caches
44 |
45 | # Keystore files
46 | # Uncomment the following line if you do not want to check your keystore files in.
47 | #*.jks
48 |
49 | # External native build folder generated in Android Studio 2.2 and later
50 | .externalNativeBuild
51 |
52 | # Google Services (e.g. APIs or Firebase)
53 | google-services.json
54 |
55 | # Freeline
56 | freeline.py
57 | freeline/
58 | freeline_project_description.json
59 |
60 | # fastlane
61 | fastlane/report.xml
62 | fastlane/Preview.html
63 | fastlane/screenshots
64 | fastlane/test_output
65 | fastlane/readme.md
66 |
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/.idea/misc.xml:
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/.idea/modules.xml:
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/.idea/runConfigurations.xml:
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/.idea/vcs.xml:
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/LICENSE:
--------------------------------------------------------------------------------
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/README.md:
--------------------------------------------------------------------------------
1 | ## 任意拖布局 （扩展自QQ空间的列表Header效果）
2 | ### 博客详情： https://blog.csdn.net/u011387817/article/details/84136291
3 |
4 | ### 使用方式:
5 | #### 添加依赖：
6 | ```
7 | implementation 'com.wuyr:randomdraglayout:1.2.0'
8 | ```
9 |
10 | ### APIs:
11 | |Method|Description|
12 | |------|-----------|
13 | |boolean reset()|重置状态 (重新初始化)|
14 | |setChildRefreshPeriod(long period)|设置子View的重绘间隔时长 **默认：0 (不重绘)**
一般是内容会不断更新的View才需要设置此参数，
静态的View无需设置|
15 | |setAlphaAnimationDuration(long duration)|设置透明渐变动画时长 **默认: 200L**|
16 | |setFlingDuration(long duration)|设置位移动画时长 **默认: 800L**|
17 | |setScrollAvailabilityRatio(float ratio)|设置惯性移动的利用率 **范围: 0~1 默认: 0.8F**|
18 | |setOnDragListener(OnDragListener onDragListener)|监听拖动 **参数: 绝对X, 绝对Y, 绝对旋转角度**|
19 | |setOnStateChangeListener(OnStateChangeListener listener)|监听状态变化 **状态:**
STATE_NORMAL (普通状态)
STATE_DRAGGING (正在拖拽中)
STATE_FLINGING (惯性移动中（有滑动速率）)
STATE_FLEEING (手指松开后，动画移动中（无速率）)
STATE_OUT_OF_SCREEN (已经移动到屏幕外面)
STATE_GONE (在屏幕内慢慢消失掉（透明渐变）)|
20 | |int getState()|获取当前状态 **状态: 见上**|
21 | |int getTargetOrientation()|获取当前位移动画前进的方向 **方向:**
ORIENTATION_LEFT (向左移动)
ORIENTATION_RIGHT (向右移动)
ORIENTATION_TOP (向上移动)
ORIENTATION_BOTTOM (向下移动)|
22 | |RectF getBounds()|获取映射后的Bitmap边界 (即：包括了旋转之后的宽高)|
23 |
24 | ## 使用示例:
25 | **在目标View外面直接套一层RandomDragLayout: (可以作用到任意View上)**
26 |
27 | ```xml
28 |
31 |
32 |
38 |
39 | ```
40 |
41 | **宽高可直接使用wrap_content，RandomDragLayout会根据里面的View调整自身大小。**
**OK，现在已经可以正常运行了，还可以在代码里面去设置一些属性或者监听各种状态。**
42 |
43 |
44 |
45 | ## Demo下载: [app-debug.apk](https://github.com/wuyr/RandomDragLayout/raw/master/app-debug.apk)
46 | ## Demo源码地址: https://github.com/wuyr/RandomDragLayout
47 | ## 效果图 (图1: QQ空间效果):
48 |  
49 |  
50 |
--------------------------------------------------------------------------------
/build.gradle:
--------------------------------------------------------------------------------
1 | // Top-level build file where you can add configuration options common to all sub-projects/modules.
2 |
3 | buildscript {
4 |
5 | repositories {
6 | google()
7 | jcenter()
8 | }
9 | dependencies {
10 | classpath 'com.android.tools.build:gradle:3.3.0'
11 | classpath 'com.github.dcendents:android-maven-gradle-plugin:1.5'
12 | classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.7.3'
13 |
14 |
15 | // NOTE: Do not place your application dependencies here; they belong
16 | // in the individual module build.gradle files
17 | }
18 | }
19 |
20 | allprojects {
21 | repositories {
22 | google()
23 | jcenter()
24 | }
25 | }
26 |
27 | task clean(type: Delete) {
28 | delete rootProject.buildDir
29 | }
30 |
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/gradle.properties:
--------------------------------------------------------------------------------
1 | # Project-wide Gradle settings.
2 | # IDE (e.g. Android Studio) users:
3 | # Gradle settings configured through the IDE *will override*
4 | # any settings specified in this file.
5 | # For more details on how to configure your build environment visit
6 | # http://www.gradle.org/docs/current/userguide/build_environment.html
7 | # Specifies the JVM arguments used for the daemon process.
8 | # The setting is particularly useful for tweaking memory settings.
9 | org.gradle.jvmargs=-Xmx1536m
10 | # When configured, Gradle will run in incubating parallel mode.
11 | # This option should only be used with decoupled projects. More details, visit
12 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
13 | # org.gradle.parallel=true
14 |
15 |
16 |
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/gradle/wrapper/gradle-wrapper.jar:
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https://raw.githubusercontent.com/Ifxcyr/RandomDragLayout/c63ea7c034ff7747580a75b8ecb0e7d199a1f0f3/gradle/wrapper/gradle-wrapper.jar
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/gradle/wrapper/gradle-wrapper.properties:
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1 | #Thu Jan 17 11:32:53 CST 2019
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-4.10.1-all.zip
7 |
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/gradlew:
--------------------------------------------------------------------------------
1 | #!/usr/bin/env sh
2 |
3 | ##############################################################################
4 | ##
5 | ## Gradle start up script for UN*X
6 | ##
7 | ##############################################################################
8 |
9 | # Attempt to set APP_HOME
10 | # Resolve links: $0 may be a link
11 | PRG="$0"
12 | # Need this for relative symlinks.
13 | while [ -h "$PRG" ] ; do
14 | ls=`ls -ld "$PRG"`
15 | link=`expr "$ls" : '.*-> \(.*\)$'`
16 | if expr "$link" : '/.*' > /dev/null; then
17 | PRG="$link"
18 | else
19 | PRG=`dirname "$PRG"`"/$link"
20 | fi
21 | done
22 | SAVED="`pwd`"
23 | cd "`dirname \"$PRG\"`/" >/dev/null
24 | APP_HOME="`pwd -P`"
25 | cd "$SAVED" >/dev/null
26 |
27 | APP_NAME="Gradle"
28 | APP_BASE_NAME=`basename "$0"`
29 |
30 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
31 | DEFAULT_JVM_OPTS=""
32 |
33 | # Use the maximum available, or set MAX_FD != -1 to use that value.
34 | MAX_FD="maximum"
35 |
36 | warn () {
37 | echo "$*"
38 | }
39 |
40 | die () {
41 | echo
42 | echo "$*"
43 | echo
44 | exit 1
45 | }
46 |
47 | # OS specific support (must be 'true' or 'false').
48 | cygwin=false
49 | msys=false
50 | darwin=false
51 | nonstop=false
52 | case "`uname`" in
53 | CYGWIN* )
54 | cygwin=true
55 | ;;
56 | Darwin* )
57 | darwin=true
58 | ;;
59 | MINGW* )
60 | msys=true
61 | ;;
62 | NONSTOP* )
63 | nonstop=true
64 | ;;
65 | esac
66 |
67 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
68 |
69 | # Determine the Java command to use to start the JVM.
70 | if [ -n "$JAVA_HOME" ] ; then
71 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
72 | # IBM's JDK on AIX uses strange locations for the executables
73 | JAVACMD="$JAVA_HOME/jre/sh/java"
74 | else
75 | JAVACMD="$JAVA_HOME/bin/java"
76 | fi
77 | if [ ! -x "$JAVACMD" ] ; then
78 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
79 |
80 | Please set the JAVA_HOME variable in your environment to match the
81 | location of your Java installation."
82 | fi
83 | else
84 | JAVACMD="java"
85 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
86 |
87 | Please set the JAVA_HOME variable in your environment to match the
88 | location of your Java installation."
89 | fi
90 |
91 | # Increase the maximum file descriptors if we can.
92 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
93 | MAX_FD_LIMIT=`ulimit -H -n`
94 | if [ $? -eq 0 ] ; then
95 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
96 | MAX_FD="$MAX_FD_LIMIT"
97 | fi
98 | ulimit -n $MAX_FD
99 | if [ $? -ne 0 ] ; then
100 | warn "Could not set maximum file descriptor limit: $MAX_FD"
101 | fi
102 | else
103 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
104 | fi
105 | fi
106 |
107 | # For Darwin, add options to specify how the application appears in the dock
108 | if $darwin; then
109 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
110 | fi
111 |
112 | # For Cygwin, switch paths to Windows format before running java
113 | if $cygwin ; then
114 | APP_HOME=`cygpath --path --mixed "$APP_HOME"`
115 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
116 | JAVACMD=`cygpath --unix "$JAVACMD"`
117 |
118 | # We build the pattern for arguments to be converted via cygpath
119 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
120 | SEP=""
121 | for dir in $ROOTDIRSRAW ; do
122 | ROOTDIRS="$ROOTDIRS$SEP$dir"
123 | SEP="|"
124 | done
125 | OURCYGPATTERN="(^($ROOTDIRS))"
126 | # Add a user-defined pattern to the cygpath arguments
127 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then
128 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
129 | fi
130 | # Now convert the arguments - kludge to limit ourselves to /bin/sh
131 | i=0
132 | for arg in "$@" ; do
133 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
134 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
135 |
136 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
137 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
138 | else
139 | eval `echo args$i`="\"$arg\""
140 | fi
141 | i=$((i+1))
142 | done
143 | case $i in
144 | (0) set -- ;;
145 | (1) set -- "$args0" ;;
146 | (2) set -- "$args0" "$args1" ;;
147 | (3) set -- "$args0" "$args1" "$args2" ;;
148 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
149 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
150 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
151 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
152 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
153 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
154 | esac
155 | fi
156 |
157 | # Escape application args
158 | save () {
159 | for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
160 | echo " "
161 | }
162 | APP_ARGS=$(save "$@")
163 |
164 | # Collect all arguments for the java command, following the shell quoting and substitution rules
165 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
166 |
167 | # by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
168 | if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
169 | cd "$(dirname "$0")"
170 | fi
171 |
172 | exec "$JAVACMD" "$@"
173 |
--------------------------------------------------------------------------------
/gradlew.bat:
--------------------------------------------------------------------------------
1 | @if "%DEBUG%" == "" @echo off
2 | @rem ##########################################################################
3 | @rem
4 | @rem Gradle startup script for Windows
5 | @rem
6 | @rem ##########################################################################
7 |
8 | @rem Set local scope for the variables with windows NT shell
9 | if "%OS%"=="Windows_NT" setlocal
10 |
11 | set DIRNAME=%~dp0
12 | if "%DIRNAME%" == "" set DIRNAME=.
13 | set APP_BASE_NAME=%~n0
14 | set APP_HOME=%DIRNAME%
15 |
16 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
17 | set DEFAULT_JVM_OPTS=
18 |
19 | @rem Find java.exe
20 | if defined JAVA_HOME goto findJavaFromJavaHome
21 |
22 | set JAVA_EXE=java.exe
23 | %JAVA_EXE% -version >NUL 2>&1
24 | if "%ERRORLEVEL%" == "0" goto init
25 |
26 | echo.
27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
28 | echo.
29 | echo Please set the JAVA_HOME variable in your environment to match the
30 | echo location of your Java installation.
31 |
32 | goto fail
33 |
34 | :findJavaFromJavaHome
35 | set JAVA_HOME=%JAVA_HOME:"=%
36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe
37 |
38 | if exist "%JAVA_EXE%" goto init
39 |
40 | echo.
41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
42 | echo.
43 | echo Please set the JAVA_HOME variable in your environment to match the
44 | echo location of your Java installation.
45 |
46 | goto fail
47 |
48 | :init
49 | @rem Get command-line arguments, handling Windows variants
50 |
51 | if not "%OS%" == "Windows_NT" goto win9xME_args
52 |
53 | :win9xME_args
54 | @rem Slurp the command line arguments.
55 | set CMD_LINE_ARGS=
56 | set _SKIP=2
57 |
58 | :win9xME_args_slurp
59 | if "x%~1" == "x" goto execute
60 |
61 | set CMD_LINE_ARGS=%*
62 |
63 | :execute
64 | @rem Setup the command line
65 |
66 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
67 |
68 | @rem Execute Gradle
69 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
70 |
71 | :end
72 | @rem End local scope for the variables with windows NT shell
73 | if "%ERRORLEVEL%"=="0" goto mainEnd
74 |
75 | :fail
76 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
77 | rem the _cmd.exe /c_ return code!
78 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
79 | exit /b 1
80 |
81 | :mainEnd
82 | if "%OS%"=="Windows_NT" endlocal
83 |
84 | :omega
85 |
--------------------------------------------------------------------------------
/randomdraglayout/.gitignore:
--------------------------------------------------------------------------------
1 | /build
2 |
--------------------------------------------------------------------------------
/randomdraglayout/build.gradle:
--------------------------------------------------------------------------------
1 | apply plugin: 'com.android.library'
2 | apply plugin: 'com.jfrog.bintray'
3 | apply plugin: 'com.github.dcendents.android-maven'
4 |
5 | def siteUrl = 'https://github.com/wuyr/RandomDragLayout' //需要修改
6 | def gitUrl = 'https://github.com/Ifxcyr/RandomDragLayout.git' //需要修改
7 |
8 | version = "1.2.0"
9 | group = "com.wuyr"
10 |
11 | android {
12 | compileSdkVersion 28
13 | defaultConfig {
14 | minSdkVersion 14
15 | targetSdkVersion 28
16 | versionCode 1
17 | versionName "1.0"
18 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
19 | }
20 | buildTypes {
21 | release {
22 | minifyEnabled false
23 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
24 | }
25 | }
26 | }
27 | dependencies {
28 | implementation 'com.android.support:support-annotations:28.0.0'
29 | }
30 |
31 | Properties properties = new Properties()
32 | properties.load(project.rootProject.file('local.properties').newDataInputStream())
33 | bintray {
34 | user = properties.getProperty("bintray.user")
35 | key = properties.getProperty("bintray.apikey")
36 | pkg {
37 | repo = 'RandomDragLayout' //需要修改
38 | name = 'RandomDragLayout' //需要修改
39 | websiteUrl = siteUrl
40 | vcsUrl = gitUrl
41 | licenses = ['Apache-2.0']
42 | userOrg = 'wuyr'
43 | publish = true
44 |
45 | version {
46 | name = '1.2.0'
47 | desc = '任意拖布局，仿QQ空间的列表Header效果。' //需要修改
48 | released = new Date()
49 | vcsTag = '1.2.0'
50 | attributes = ['gradle-plugin': 'com.use.less:com.use.less.gradle:gradle-useless-plugin']
51 | }
52 | }
53 | configurations = ['archives']
54 | }
55 |
56 | install {
57 | repositories.mavenInstaller {
58 |
59 | pom {
60 | project {
61 | packaging 'aar'
62 |
63 | name '陈小缘'
64 | description '任意拖布局，仿QQ空间的列表Header效果。' //需要修改
65 | url siteUrl
66 |
67 | licenses {
68 | license {
69 | name 'Apache-2.0'
70 | url 'https://raw.githubusercontent.com/Ifxcyr/RandomDragLayout/master/LICENSE' //需要修改
71 | }
72 | }
73 | developers {
74 | developer {
75 | id 'ifxcyr'
76 | name '陈小缘'
77 | email 'ifxcyr@gmail.com'
78 | }
79 | }
80 | scm {
81 | connection gitUrl
82 | developerConnection gitUrl
83 | url siteUrl
84 | }
85 | }
86 | }
87 | }
88 | }
89 | task sourcesJar(type: Jar) {
90 | from android.sourceSets.main.java.srcDirs
91 | classifier = 'sources'
92 | }
93 | task javadoc(type: Javadoc) {
94 | failOnError false
95 | source = android.sourceSets.main.java.srcDirs
96 | classpath += project.files(android.getBootClasspath().join(File.pathSeparator))
97 | }
98 | task javadocJar(type: Jar, dependsOn: javadoc) {
99 | classifier = 'javadoc'
100 | from javadoc.destinationDir
101 | }
102 | artifacts {
103 | archives javadocJar
104 | archives sourcesJar
105 | }
106 | javadoc {
107 | options {
108 | encoding "UTF-8"
109 | charSet 'UTF-8'
110 | author true
111 | version true
112 | links "http://docs.oracle.com/javase/8/docs/api"
113 | }
114 | }
--------------------------------------------------------------------------------
/randomdraglayout/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 |
--------------------------------------------------------------------------------
/randomdraglayout/src/androidTest/java/com/wuyr/randomdraglayout/ExampleInstrumentedTest.java:
--------------------------------------------------------------------------------
1 | package com.wuyr.randomdraglayout;
2 |
3 | import android.content.Context;
4 | import android.support.test.InstrumentationRegistry;
5 | import android.support.test.runner.AndroidJUnit4;
6 |
7 | import org.junit.Test;
8 | import org.junit.runner.RunWith;
9 |
10 | import static org.junit.Assert.*;
11 |
12 | /**
13 | * Instrumented test, which will execute on an Android device.
14 | *
15 | * @see Testing documentation
16 | */
17 | @RunWith(AndroidJUnit4.class)
18 | public class ExampleInstrumentedTest {
19 | @Test
20 | public void useAppContext() {
21 | // Context of the app under test.
22 | Context appContext = InstrumentationRegistry.getTargetContext();
23 |
24 | assertEquals("com.wuyr.randomdraglayout.test", appContext.getPackageName());
25 | }
26 | }
27 |
--------------------------------------------------------------------------------
/randomdraglayout/src/main/AndroidManifest.xml:
--------------------------------------------------------------------------------
1 |
3 |
--------------------------------------------------------------------------------
/randomdraglayout/src/main/java/com/wuyr/randomdraglayout/GhostView.java:
--------------------------------------------------------------------------------
1 | package com.wuyr.randomdraglayout;
2 |
3 | import android.annotation.SuppressLint;
4 | import android.content.Context;
5 | import android.graphics.Bitmap;
6 | import android.graphics.Canvas;
7 | import android.graphics.Matrix;
8 | import android.graphics.PointF;
9 | import android.graphics.RectF;
10 | import android.view.MotionEvent;
11 | import android.view.View;
12 |
13 | import java.util.Random;
14 |
15 | import static com.wuyr.randomdraglayout.RandomDragLayout.ORIENTATION_BOTTOM;
16 | import static com.wuyr.randomdraglayout.RandomDragLayout.ORIENTATION_LEFT;
17 | import static com.wuyr.randomdraglayout.RandomDragLayout.ORIENTATION_RIGHT;
18 | import static com.wuyr.randomdraglayout.RandomDragLayout.ORIENTATION_TOP;
19 |
20 | /**
21 | * @author wuyr
22 | * @github https://github.com/wuyr/RandomDragLayout
23 | * @since 2019-01-17 上午11:40
24 | */
25 | @SuppressLint("ViewConstructor")
26 | class GhostView extends View {
27 |
28 | private int mTargetOrientation = -1;
29 | private Bitmap mBitmap;
30 | private float mDownX, mDownY, mDownRawX;
31 | private float mBitmapCenterX, mBitmapCenterY;
32 | private float mCurrentRawX, mCurrentRawY;
33 | private float mStartAngle;
34 | private float mCurrentAngle;
35 | private boolean isFlinging;
36 | private boolean isLeanLeft;
37 | private boolean isClockwise;
38 | private Matrix mMatrix;
39 | private RectF mBitmapRect;
40 | private OnOutOfScreenListener mOnOutOfScreenListener;
41 | private RandomDragLayout.OnDragListener mOnDragListener;
42 |
43 | GhostView(Context context, OnOutOfScreenListener listener) {
44 | super(context);
45 | mOnOutOfScreenListener = listener;
46 | mMatrix = new Matrix();
47 | mBitmapRect = new RectF();
48 | }
49 |
50 | @Override
51 | protected void onDraw(Canvas canvas) {
52 | if (mBitmap != null) {
53 |
54 | float l = mCurrentRawX - mDownX, t = mCurrentRawY - mDownY;
55 | float r = l + mBitmap.getWidth();
56 | float b = t + mBitmap.getHeight();
57 |
58 | mBitmapRect.set(l, t, r, b);
59 |
60 | mMatrix.setRotate(mCurrentAngle, mCurrentRawX, mCurrentRawY);
61 | mMatrix.mapRect(mBitmapRect);
62 |
63 | canvas.setMatrix(mMatrix);
64 | canvas.drawBitmap(mBitmap, l, t, null);
65 |
66 | if (checkIsContentOutOfScreen()) {
67 | if (mOnOutOfScreenListener != null) {
68 | mOnOutOfScreenListener.onOutOfScreen(this);
69 | }
70 | }
71 | }
72 | }
73 |
74 | /**
75 | * 当此方法被调用时，表示已经开始了拖动
76 | *
77 | * @param event 触摸事件
78 | * @param bitmap View所对应的Bitmap
79 | */
80 | void onDown(MotionEvent event, Bitmap bitmap) {
81 |
82 | mCurrentRawX = mDownRawX = event.getRawX();
83 | mCurrentRawY = event.getRawY();
84 | mDownX = event.getX();
85 | mDownY = event.getY();
86 |
87 | float l = mCurrentRawX - mDownX, t = mCurrentRawY - mDownY;
88 | mBitmapCenterX = l + bitmap.getWidth() / 2F;
89 | mBitmapCenterY = t + bitmap.getHeight() / 2F;
90 |
91 | mStartAngle = computeClockwiseAngle(mBitmapCenterX, mBitmapCenterY, mCurrentRawX, mCurrentRawY);
92 |
93 | float halfWidth = bitmap.getWidth() / 2F;
94 | isLeanLeft = mDownX < halfWidth;
95 |
96 | mBitmap = bitmap;
97 | invalidate();
98 | notifyDragListener();
99 | }
100 |
101 | /**
102 | * 更新Bitmap的坐标和旋转角度
103 | *
104 | * @param offsetX X轴上新的位置（相对）
105 | * @param offsetY Y轴上新的位置（相对）
106 | */
107 | void updateOffset(float offsetX, float offsetY) {
108 | mCurrentRawX += offsetX;
109 | mCurrentRawY += offsetY;
110 | if (isFlinging) {
111 | mBitmapCenterX = mBitmapRect.centerX();
112 | mBitmapCenterY = mBitmapRect.centerY();
113 | mDownRawX = mCurrentRawX;
114 | }
115 | mCurrentAngle = computeClockwiseAngle(mBitmapCenterX, mBitmapCenterY, mDownRawX, mCurrentRawY) - mStartAngle;
116 | invalidate();
117 | notifyDragListener();
118 | }
119 |
120 | /**
121 | * 播放位移动画时的帧更新回调
122 | *
123 | * @param location 新的位置（绝对）
124 | */
125 | void onAnimationUpdate(PointF location) {
126 | if (mBitmap != null) {
127 | float moveOffset = getMoveOffset(location);
128 | //90代表滑动距离=(View宽或View高)时的旋转角度
129 | float angleOffset = Math.abs(moveOffset / Math.max(mBitmap.getWidth(), mBitmap.getHeight()) * 90F);
130 | //延续之前的旋转方向：如果之前是顺时针转，那就继续顺时针转，反之
131 | mCurrentAngle += isClockwise ? angleOffset : -angleOffset;
132 | mCurrentRawX = location.x;
133 | mCurrentRawY = location.y;
134 |
135 | invalidate();
136 | notifyDragListener();
137 | }
138 | }
139 |
140 | /**
141 | * 标记已经开始惯性移动
142 | */
143 | void setFlinging() {
144 | isFlinging = true;
145 | }
146 |
147 | /**
148 | * 设置拖动监听
149 | */
150 | void setOnDragListener(RandomDragLayout.OnDragListener onDragListener) {
151 | mOnDragListener = onDragListener;
152 | }
153 |
154 | /**
155 | * 获取当前位移动画前进的方向
156 | *
157 | * @return {@see RandomDragLayout.ORIENTATION} or 无状态: -1
158 | */
159 | int getTargetOrientation() {
160 | return mTargetOrientation;
161 | }
162 |
163 | /**
164 | * 获取map后的bitmap边界 (即：包括了旋转变化后的宽高)
165 | */
166 | RectF getBounds() {
167 | return mBitmapRect;
168 | }
169 |
170 | /**
171 | * 获取位移动画的起点
172 | *
173 | * @return 起点位置
174 | */
175 | PointF getAnimationStartPoint() {
176 | updateRotateOrientation();
177 | return new PointF(mCurrentRawX, mCurrentRawY);
178 | }
179 |
180 | /**
181 | * 获取位移动画的终点
182 | *
183 | * @return 终点位置
184 | */
185 | PointF getAnimationEndPoint() {
186 | float halfWidth = mBitmapCenterX;
187 | float halfHeight = mBitmapCenterY;
188 | float leftPercent = 1F - mCurrentRawX / halfWidth;
189 | float rightPercent = (mCurrentRawX - halfWidth) / halfWidth;
190 | float topPercent = 1F - mCurrentRawY / halfHeight;
191 | float bottomPercent = (mCurrentRawY - halfHeight) / halfHeight;
192 | float max = Math.max(Math.max(leftPercent, rightPercent), Math.max(topPercent, bottomPercent));
193 | //反正一移动出屏幕就会移除View并中断动画，并且我们需要在任何地方的移动速度都不变，所以我们的距离可以指定为屏幕高度 + View高度
194 | int maxBitmapLength = (int) Math.max(mBitmapRect.width(), mBitmapRect.height());
195 | if (maxBitmapLength == 0) {
196 | return new PointF();
197 | }
198 | float distance = Math.max(getWidth(), getHeight()) + maxBitmapLength;
199 | int offset = -maxBitmapLength + new Random().nextInt(maxBitmapLength * 2);
200 | float toX, toY;
201 | if (max == leftPercent) {
202 | toX = -distance;
203 | toY = offset;
204 | mTargetOrientation = ORIENTATION_LEFT;
205 | } else if (max == rightPercent) {
206 | toX = mCurrentRawX + distance;
207 | toY = offset;
208 | mTargetOrientation = ORIENTATION_RIGHT;
209 | } else if (max == topPercent) {
210 | toX = offset;
211 | toY = -distance;
212 | mTargetOrientation = ORIENTATION_TOP;
213 | } else {
214 | toX = offset;
215 | toY = mCurrentRawY + distance;
216 | mTargetOrientation = ORIENTATION_BOTTOM;
217 | }
218 | return new PointF(toX, toY);
219 | }
220 |
221 | private void notifyDragListener() {
222 | if (mOnDragListener != null) {
223 | mOnDragListener.onUpdate(mCurrentRawX, mCurrentRawY, fixAngle(mCurrentAngle));
224 | }
225 | }
226 |
227 | /**
228 | * 调整角度，使其在0 ~ 360之间
229 | *
230 | * @param angle 当前角度
231 | * @return 调整后的角度
232 | */
233 | private float fixAngle(float angle) {
234 | float maxAngle = 360F;
235 | while (angle < 0) {
236 | angle += maxAngle;
237 | }
238 | while (angle > maxAngle) {
239 | angle %= maxAngle;
240 | }
241 | return angle;
242 | }
243 |
244 | /**
245 | * 根据当前动画前进的方向来计算偏移量
246 | *
247 | * @param location 新的位置（绝对）
248 | * @return 偏移量（相对）
249 | */
250 | private float getMoveOffset(PointF location) {
251 | return mTargetOrientation == ORIENTATION_LEFT ||
252 | mTargetOrientation == ORIENTATION_RIGHT ?
253 | location.x - mCurrentRawX : location.y - mCurrentRawY;
254 | }
255 |
256 | /**
257 | * 检查Bitmap是否完全draw在屏幕之外
258 | */
259 | private boolean checkIsContentOutOfScreen() {
260 | return mBitmapRect.bottom < 0
261 | || mBitmapRect.top > getBottom()
262 | || mBitmapRect.right < 0
263 | || mBitmapRect.left > getRight();
264 | }
265 |
266 | /**
267 | * 更新旋转方向
268 | */
269 | private void updateRotateOrientation() {
270 | isClockwise = isLeanLeft ? mCurrentRawY < mBitmapCenterY : mCurrentRawY > mBitmapCenterY;
271 | }
272 |
273 | /**
274 | * 计算两个坐标点的顺时针角度，以第一个坐标点为圆心
275 | *
276 | * @param startX 起始点X轴的值
277 | * @param startY 起始点Y轴的值
278 | * @param endX 结束点X轴的值
279 | * @param endY 结束点Y轴的值
280 | * @return 以起始点为圆心计算的顺时针角度
281 | */
282 | private float computeClockwiseAngle(float startX, float startY, float endX, float endY) {
283 | int appendAngle = computeNeedAppendAngle(startX, startY, endX, endY);
284 | float lineA = Math.abs(endX - startX);
285 | float lineB = Math.abs(endY - startY);
286 | float lineC = (float) Math.sqrt(Math.pow(lineA, 2) + Math.pow(lineB, 2));
287 | float angle;
288 | if (appendAngle == 0 || appendAngle == 180) {
289 | angle = (float) Math.toDegrees(Math.acos(lineA / lineC));
290 | } else {
291 | angle = (float) Math.toDegrees(Math.acos(lineB / lineC));
292 | }
293 | return angle + appendAngle;
294 | }
295 |
296 | /**
297 | * 根据两点的位置来判断从起始点到结束点连线后的象限，并返回对应的角度
298 | *
299 | * @param startX 起始点X轴的值
300 | * @param startY 起始点Y轴的值
301 | * @param endX 结束点X轴的值
302 | * @param endY 结束点Y轴的值
303 | * @return 对应象限的顺时针基础角度
304 | */
305 | private int computeNeedAppendAngle(float startX, float startY, float endX, float endY) {
306 | return (endX > startX) ? (endY > startY ? 0 : 270) : (endY > startY ? 90 : 180);
307 | }
308 |
309 | @Override
310 | protected void onDetachedFromWindow() {
311 | super.onDetachedFromWindow();
312 | release();
313 | }
314 |
315 | /**
316 | * 释放资源
317 | */
318 | private void release() {
319 | mBitmap = null;
320 | mMatrix = null;
321 | mBitmapRect = null;
322 | mOnOutOfScreenListener = null;
323 | }
324 |
325 | interface OnOutOfScreenListener {
326 | /**
327 | * 当Canvas的内容全部draw在View的边界外面时回调此方法
328 | *
329 | * @param view 发生事件所对应的View
330 | */
331 | void onOutOfScreen(GhostView view);
332 | }
333 | }
334 |
--------------------------------------------------------------------------------
/randomdraglayout/src/main/java/com/wuyr/randomdraglayout/RandomDragLayout.java:
--------------------------------------------------------------------------------
1 | package com.wuyr.randomdraglayout;
2 |
3 | import android.animation.Animator;
4 | import android.animation.AnimatorListenerAdapter;
5 | import android.animation.TypeEvaluator;
6 | import android.animation.ValueAnimator;
7 | import android.annotation.SuppressLint;
8 | import android.app.Activity;
9 | import android.content.Context;
10 | import android.content.ContextWrapper;
11 | import android.graphics.Bitmap;
12 | import android.graphics.Canvas;
13 | import android.graphics.Color;
14 | import android.graphics.PointF;
15 | import android.graphics.PorterDuff;
16 | import android.graphics.RectF;
17 | import android.os.Handler;
18 | import android.util.AttributeSet;
19 | import android.view.MotionEvent;
20 | import android.view.VelocityTracker;
21 | import android.view.View;
22 | import android.view.ViewConfiguration;
23 | import android.view.ViewGroup;
24 | import android.widget.Scroller;
25 |
26 | /**
27 | * @author wuyr
28 | * @github https://github.com/wuyr/RandomDragLayout
29 | * @since 2019-01-17 上午11:40
30 | */
31 | @SuppressWarnings("unused")
32 | public class RandomDragLayout extends ViewGroup {
33 |
34 | /**
35 | * 手指松开后（无滑动速率）, View向屏幕左边移动
36 | */
37 | public static final int ORIENTATION_LEFT = 0;
38 | /**
39 | * 同上，此为向右
40 | */
41 | public static final int ORIENTATION_RIGHT = 1;
42 | /**
43 | * 同上，此为向上
44 | */
45 | public static final int ORIENTATION_TOP = 2;
46 | /**
47 | * 同上，此为向下
48 | */
49 | public static final int ORIENTATION_BOTTOM = 3;
50 | /**
51 | * 普通状态
52 | */
53 | public static final int STATE_NORMAL = 0;
54 | /**
55 | * 正在拖拽中
56 | */
57 | public static final int STATE_DRAGGING = 1;
58 | /**
59 | * 惯性移动中（有滑动速率）
60 | */
61 | public static final int STATE_FLINGING = 2;
62 | /**
63 | * 手指松开后，向屏幕边缘移动中（无滑动速率）
64 | */
65 | public static final int STATE_FLEEING = 3;
66 | /**
67 | * 该View已经移动到屏幕外面
68 | */
69 | public static final int STATE_OUT_OF_SCREEN = 4;
70 | /**
71 | * 该View在屏幕内播放透明渐变动画完毕（消失掉）
72 | */
73 | public static final int STATE_GONE = 5;
74 |
75 | private int mState;//当前状态
76 | private ViewGroup mRootView;//DecorView
77 | private View mChild;//唯一的子View
78 | private int mTouchSlop;//触发滑动的最小距离
79 | private boolean isBeingDragged;//是否已经开始了拖动
80 | private boolean isGhostViewShown;//GhostView是否已经添加
81 | private boolean isGhostViewLostControl;//GhostView是否脱离手指
82 | private boolean isAlphaAnimationRunning;//透明渐变动画是否正在播放
83 | private float mScrollAvailabilityRatio;
84 | private float mLastX, mLastY;
85 | private long mFlingDuration;
86 | private long mAlphaDuration;
87 | private Scroller mScroller;
88 | private VelocityTracker mVelocityTracker;
89 | private GhostView mGhostView;
90 | private Bitmap mBitmap;//子View的Bitmap（用来位移，旋转）
91 | private Canvas mCanvas;
92 | private ValueAnimator mAnimator;
93 | private TypeEvaluator mEvaluator;
94 | private OnStateChangeListener mOnStateChangeListener;
95 | private OnDragListener mOnDragListener;
96 | private Handler mHandler;
97 | private Runnable mChildRefreshTask;//子View重绘任务
98 | private long mChildRefreshPeriod;//间隔时长
99 |
100 | public RandomDragLayout(Context context) {
101 | this(context, null);
102 | }
103 |
104 | public RandomDragLayout(Context context, AttributeSet attrs) {
105 | this(context, attrs, 0);
106 | }
107 |
108 | public RandomDragLayout(Context context, AttributeSet attrs, int defStyleAttr) {
109 | super(context, attrs, defStyleAttr);
110 | init(context);
111 | }
112 |
113 | private void init(Context context) {
114 | mHandler = new Handler();
115 | //非AndroidStudio预览
116 | if (!isInEditMode()) {
117 | //获取activity的根视图,用来添加GhostView
118 | mRootView = (ViewGroup) getActivity().getWindow().getDecorView();
119 | }
120 | mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();
121 | mScroller = new Scroller(context);
122 | mVelocityTracker = VelocityTracker.obtain();
123 | mScrollAvailabilityRatio = .8F;
124 | mFlingDuration = 800L;
125 | mAlphaDuration = 200L;
126 | initEvaluator();
127 | }
128 |
129 | /**
130 | * 重置状态
131 | *
132 | * @return 重置成功返回 true，反之
133 | */
134 | public boolean reset() {
135 | if (isBeingDragged || mAnimator != null && mAnimator.isRunning()
136 | || isAlphaAnimationRunning || !mScroller.isFinished()) {
137 | return false;
138 | }
139 | if (mGhostView != null) {
140 | mRootView.removeView(mGhostView);
141 | mGhostView = null;
142 | }
143 | mChild.setVisibility(VISIBLE);
144 | isGhostViewShown = false;
145 | isGhostViewLostControl = false;
146 | mAnimator = null;
147 | removeRefreshTask();
148 | updateState(STATE_NORMAL);
149 | return true;
150 | }
151 |
152 | /**
153 | * 设置惯性移动的利用率
154 | *
155 | * @param ratio 范围: 0~1
156 | */
157 | public void setScrollAvailabilityRatio(float ratio) {
158 | mScrollAvailabilityRatio = ratio;
159 | }
160 |
161 | /**
162 | * 设置位移动画时长
163 | */
164 | public void setFlingDuration(long duration) {
165 | mFlingDuration = duration;
166 | }
167 |
168 | /**
169 | * 设置透明渐变动画时长
170 | */
171 | public void setAlphaAnimationDuration(long duration) {
172 | mAlphaDuration = duration;
173 | }
174 |
175 | /**
176 | * 监听状态变化
177 | */
178 | public void setOnStateChangeListener(OnStateChangeListener listener) {
179 | mOnStateChangeListener = listener;
180 | }
181 |
182 | /**
183 | * 监听拖动
184 | */
185 | public void setOnDragListener(OnDragListener onDragListener) {
186 | mOnDragListener = onDragListener;
187 | if (mGhostView != null) {
188 | mGhostView.setOnDragListener(onDragListener);
189 | }
190 | }
191 |
192 | /**
193 | * 设置子View的重绘周期 默认：0 (不重绘)
194 | * 一般是内容会不断更新的View才需要设置此参数，静态的View无需设置
195 | *
196 | * @param period 间隔时长 建议: 不低于16
197 | */
198 | public void setChildRefreshPeriod(long period) {
199 | removeRefreshTask();
200 | if (period > 0) {
201 | mChildRefreshPeriod = period;
202 | mChildRefreshTask = new Runnable() {
203 | @Override
204 | public void run() {
205 | if (mGhostView != null) {
206 | mCanvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR);
207 | mChild.draw(mCanvas);
208 | mGhostView.invalidate();
209 | postRefreshTask();
210 | }
211 | }
212 | };
213 | }
214 | }
215 |
216 | /**
217 | * 获取当前位移动画前进的方向，包括：上，下，左，右
218 | *
219 | * @return {@link #ORIENTATION_LEFT} or 无状态: -1
220 | */
221 | public int getTargetOrientation() {
222 | return mGhostView == null ? -1 : mGhostView.getTargetOrientation();
223 | }
224 |
225 | /**
226 | * 获取当前状态，包框：普通，拖拽中，惯性移动中，非惯性移动中，超出屏幕，消失
227 | *
228 | * @return {@link #STATE_NORMAL}
229 | */
230 | public int getState() {
231 | return mState;
232 | }
233 |
234 | /**
235 | * 获取map后的bitmap边界 (即：包括了旋转变化后的宽高)
236 | */
237 | public RectF getBounds() {
238 | return mGhostView.getBounds();
239 | }
240 |
241 | @Override
242 | protected void onSizeChanged(int w, int h, int oldw, int oldh) {
243 | super.onSizeChanged(w, h, oldw, oldh);
244 | if (w > 0 && h > 0) {
245 | //更新画布尺寸
246 | mCanvas = new Canvas(mBitmap = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888));
247 | }
248 | }
249 |
250 | @SuppressLint("ClickableViewAccessibility")
251 | @Override
252 | public boolean onTouchEvent(MotionEvent event) {
253 | float x = event.getX(), y = event.getY();
254 | mVelocityTracker.addMovement(event);
255 | switch (event.getAction()) {
256 | case MotionEvent.ACTION_DOWN:
257 | case MotionEvent.ACTION_MOVE:
258 | handleActionMove(event, x, y);
259 | break;
260 | case MotionEvent.ACTION_UP:
261 | case MotionEvent.ACTION_CANCEL:
262 | case MotionEvent.ACTION_OUTSIDE:
263 | handleActionUp();
264 | break;
265 | default:
266 | break;
267 | }
268 | mLastX = x;
269 | mLastY = y;
270 | return true;
271 | }
272 |
273 | /**
274 | * 处理 ACTION_MOVE 事件
275 | */
276 | private void handleActionMove(MotionEvent event, float x, float y) {
277 | if (isGhostViewShown) {
278 | //手指未松开才更新
279 | if (!isGhostViewLostControl && !isAlphaAnimationRunning && mGhostView != null) {
280 | mGhostView.updateOffset(x - mLastX, y - mLastY);
281 | updateState(STATE_DRAGGING);
282 | }
283 | } else {
284 | mChild.draw(mCanvas);
285 | mChild.setVisibility(INVISIBLE);
286 | initializeGhostView();
287 | mRootView.addView(mGhostView, LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
288 |
289 | MarginLayoutParams layoutParams = (MarginLayoutParams) mChild.getLayoutParams();
290 | event.offsetLocation(-layoutParams.leftMargin, -layoutParams.topMargin);
291 |
292 | mGhostView.onDown(event, mBitmap);
293 | isGhostViewShown = true;
294 | postRefreshTask();
295 | }
296 | }
297 |
298 | /**
299 | * 处理 ACTION_UP 事件
300 | */
301 | private void handleActionUp() {
302 | //如果位移或透明渐变动画正在播放则不处理
303 | if (!isGhostViewLostControl && !isAlphaAnimationRunning && mGhostView != null) {
304 | isBeingDragged = false;
305 | isGhostViewLostControl = true;
306 | mVelocityTracker.computeCurrentVelocity(500);
307 | float xVelocity = mVelocityTracker.getXVelocity();
308 | float yVelocity = mVelocityTracker.getYVelocity();
309 | if (isOneBiggerThan(xVelocity, yVelocity, 1000)) {
310 | startFling(xVelocity, yVelocity);
311 | } else {
312 | startAnimator();
313 | }
314 | }
315 | }
316 |
317 | /**
318 | * 播放位移动画
319 | */
320 | private void startAnimator() {
321 | mAnimator = ValueAnimator.ofObject(mEvaluator, mGhostView.getAnimationStartPoint(),
322 | mGhostView.getAnimationEndPoint()).setDuration(mFlingDuration);
323 |
324 | mAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
325 | @Override
326 | public void onAnimationUpdate(ValueAnimator animation) {
327 | if (mGhostView != null) {
328 | mGhostView.onAnimationUpdate((PointF) animation.getAnimatedValue());
329 | }
330 | }
331 | });
332 | mAnimator.start();
333 | updateState(STATE_FLEEING);
334 | }
335 |
336 | /**
337 | * 初始化GhostView
338 | */
339 | private void initializeGhostView() {
340 | if (mGhostView != null) {
341 | mRootView.removeView(mGhostView);
342 | }
343 | mGhostView = new GhostView(getContext(), new GhostView.OnOutOfScreenListener() {
344 | @Override
345 | public void onOutOfScreen(GhostView view) {
346 | isGhostViewLostControl = true;
347 | abortAnimation();
348 | invalidate();
349 | updateState(STATE_OUT_OF_SCREEN);
350 | }
351 | });
352 | if (mOnDragListener != null) {
353 | mGhostView.setOnDragListener(mOnDragListener);
354 | }
355 | }
356 |
357 | /**
358 | * 打断动画
359 | */
360 | private void abortAnimation() {
361 | mScroller.abortAnimation();
362 | if (mAnimator != null) {
363 | mAnimator.cancel();
364 | }
365 | }
366 |
367 | /**
368 | * 判断前两个参数是否至少一个大于第三个参数
369 | */
370 | private boolean isOneBiggerThan(float value1, float value2, int target) {
371 | return Math.abs(value1) > target || Math.abs(value2) > target;
372 | }
373 |
374 | /**
375 | * 开始惯性移动
376 | */
377 | private void startFling(float xVelocity, float yVelocity) {
378 | mGhostView.setFlinging();
379 | mScroller.fling(0, 0, (int) xVelocity, (int) yVelocity,
380 | Integer.MIN_VALUE, Integer.MAX_VALUE, Integer.MIN_VALUE, Integer.MAX_VALUE);
381 | invalidate();
382 | updateState(STATE_FLINGING);
383 | }
384 |
385 | @Override
386 | public boolean onInterceptTouchEvent(MotionEvent event) {
387 | if (!isEnabled()) {
388 | return false;
389 | }
390 | if ((event.getAction() == MotionEvent.ACTION_MOVE && isBeingDragged) || super.onInterceptTouchEvent(event)) {
391 | //如果已经开始了拖动，则继续占用此次事件
392 | requestDisallowInterceptTouchEvent(true);
393 | return true;
394 | }
395 | float x = event.getX(), y = event.getY();
396 | switch (event.getAction()) {
397 | case MotionEvent.ACTION_DOWN:
398 | mLastX = x;
399 | mLastY = y;
400 | break;
401 | case MotionEvent.ACTION_MOVE:
402 | float offsetX = x - mLastX;
403 | float offsetY = y - mLastY;
404 | //判断是否触发拖动事件
405 | if (isOneBiggerThan(offsetX, offsetY, mTouchSlop)) {
406 | mLastX = x;
407 | mLastY = y;
408 | isBeingDragged = true;
409 | }
410 | break;
411 | case MotionEvent.ACTION_UP:
412 | case MotionEvent.ACTION_CANCEL:
413 | case MotionEvent.ACTION_OUTSIDE:
414 | isBeingDragged = false;
415 | break;
416 | }
417 | requestDisallowInterceptTouchEvent(isBeingDragged);
418 | return isBeingDragged;
419 | }
420 |
421 | @Override
422 | protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
423 | if (mChild == null) {
424 | throw new IllegalStateException("RandomDragLayout at least one child is needed!");
425 | }
426 | measureChild(mChild, widthMeasureSpec, heightMeasureSpec);
427 | int widthSize = MeasureSpec.getSize(widthMeasureSpec);
428 | int widthMode = MeasureSpec.getMode(widthMeasureSpec);
429 | int heightSize = MeasureSpec.getSize(heightMeasureSpec);
430 | int heightMode = MeasureSpec.getMode(heightMeasureSpec);
431 | int width, height;
432 | MarginLayoutParams layoutParams = (MarginLayoutParams) mChild.getLayoutParams();
433 | if (widthMode == MeasureSpec.EXACTLY) {
434 | width = widthSize;
435 | } else {
436 | width = mChild.getMeasuredWidth() + layoutParams.leftMargin + layoutParams.rightMargin;
437 | }
438 | if (heightMode == MeasureSpec.EXACTLY) {
439 | height = heightSize;
440 | } else {
441 | height = mChild.getMeasuredHeight() + layoutParams.topMargin + layoutParams.bottomMargin;
442 | }
443 | setMeasuredDimension(width, height);
444 | }
445 |
446 | @Override
447 | protected void onLayout(boolean changed, int l, int t, int r, int b) {
448 | MarginLayoutParams layoutParams = (MarginLayoutParams) mChild.getLayoutParams();
449 | mChild.layout(getPaddingLeft() + layoutParams.leftMargin, getPaddingTop() + layoutParams.topMargin,
450 | mChild.getMeasuredWidth() - getPaddingRight() + layoutParams.leftMargin,
451 | mChild.getMeasuredHeight() - getPaddingBottom() + layoutParams.topMargin);
452 | }
453 |
454 | /**
455 | * 重写父类addView方法，仅允许拥有一个直接子View
456 | */
457 | @Override
458 | public void addView(View child, int index, LayoutParams params) {
459 | if (getChildCount() > 0) {
460 | throw new IllegalStateException("RandomDragLayout can only contain 1 child!");
461 | }
462 | super.addView(child, index, params);
463 | mChild = child;
464 | }
465 |
466 | private float mLastScrollOffsetX, mLastScrollOffsetY;
467 |
468 | @Override
469 | public void computeScroll() {
470 | if (mScroller.computeScrollOffset()) {
471 | float y = mScroller.getCurrY() * mScrollAvailabilityRatio;
472 | float x = mScroller.getCurrX() * mScrollAvailabilityRatio;
473 | mGhostView.updateOffset(x - mLastScrollOffsetX, y - mLastScrollOffsetY);
474 | mLastScrollOffsetX = x;
475 | mLastScrollOffsetY = y;
476 | invalidate();
477 | } else if (mScroller.isFinished()) {
478 | if (isGhostViewLostControl && mRootView != null) {
479 | //防止报：Attempt to read from field 'int android.view.View.mViewFlags' on a null object reference
480 | post(new Runnable() {
481 | @Override
482 | public void run() {
483 | if (mGhostView != null) {
484 | //如果是超出了屏幕，则不播放渐变动画，直接移除
485 | if (mState == STATE_OUT_OF_SCREEN) {
486 | mRootView.removeView(mGhostView);
487 | mGhostView = null;
488 | isAlphaAnimationRunning = false;
489 | removeRefreshTask();
490 | } else {
491 | startAlphaAnimation();
492 | }
493 | isGhostViewLostControl = false;
494 | }
495 | }
496 | });
497 | }
498 | //惯性移动完毕，重置偏移量
499 | mLastScrollOffsetX = 0;
500 | mLastScrollOffsetY = 0;
501 | }
502 | }
503 |
504 | /***
505 | * 播放透明渐变动画，然后移除GhostView
506 | */
507 | private void startAlphaAnimation() {
508 | if (mGhostView != null) {
509 | isAlphaAnimationRunning = true;
510 | mGhostView.animate().alpha(0).setDuration(mAlphaDuration).setListener(new AnimatorListenerAdapter() {
511 | @Override
512 | public void onAnimationEnd(Animator animation) {
513 | mRootView.removeView(mGhostView);
514 | mGhostView = null;
515 | isAlphaAnimationRunning = false;
516 | updateState(STATE_GONE);
517 | removeRefreshTask();
518 | }
519 | }).start();
520 | }
521 | }
522 |
523 | /**
524 | * 更新状态并回调监听器
525 | *
526 | * @param newState 新的状态
527 | */
528 | private void updateState(int newState) {
529 | if (mState != newState) {
530 | mState = newState;
531 | if (mOnStateChangeListener != null) {
532 | mOnStateChangeListener.onStateChanged(newState);
533 | }
534 | }
535 | }
536 |
537 | @Override
538 | public MarginLayoutParams generateLayoutParams(AttributeSet attrs) {
539 | return new MarginLayoutParams(getContext(), attrs);
540 | }
541 |
542 | @Override
543 | protected MarginLayoutParams generateLayoutParams(LayoutParams p) {
544 | return new MarginLayoutParams(p);
545 | }
546 |
547 | @Override
548 | protected MarginLayoutParams generateDefaultLayoutParams() {
549 | return new MarginLayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
550 | }
551 |
552 | private void removeRefreshTask() {
553 | if (mChildRefreshTask != null) {
554 | mHandler.removeCallbacks(mChildRefreshTask);
555 | }
556 | }
557 |
558 | private void postRefreshTask() {
559 | if (mChildRefreshTask != null) {
560 | mHandler.postDelayed(mChildRefreshTask, mChildRefreshPeriod);
561 | }
562 | }
563 |
564 | /**
565 | * 自定义Evaluator，使ValueAnimator支持PointF
566 | */
567 | private void initEvaluator() {
568 | mEvaluator = new TypeEvaluator() {
569 |
570 | private final PointF temp = new PointF();
571 |
572 | @Override
573 | public PointF evaluate(float fraction, PointF startValue, PointF endValue) {
574 | float totalX = endValue.x - startValue.x;
575 | float totalY = endValue.y - startValue.y;
576 | float x = startValue.x + (totalX * fraction);
577 | float y = startValue.y + (totalY * fraction);
578 | temp.set(x, y);
579 | return temp;
580 | }
581 | };
582 |
583 | }
584 |
585 | /**
586 | * 根据View的Context来获取对应的Activity
587 | *
588 | * @return 该View所在的Activity
589 | */
590 | private Activity getActivity() {
591 | Context context = getContext();
592 | while (context instanceof ContextWrapper) {
593 | if (context instanceof Activity) {
594 | return (Activity) context;
595 | }
596 | context = ((ContextWrapper) context).getBaseContext();
597 | }
598 | throw new RuntimeException("Activity not found!");
599 | }
600 |
601 | public interface OnStateChangeListener {
602 | /**
603 | * 状态更新回调
604 | *
605 | * @param newState 新的状态
606 | */
607 | void onStateChanged(int newState);
608 | }
609 |
610 | public interface OnDragListener {
611 | /**
612 | * 拖动更新时回调
613 | *
614 | * @param x 触摸点在X轴上的绝对坐标
615 | * @param y 触摸点在Y轴上的绝对坐标
616 | * @param degrees GhostView的绝对旋转角度 (0~360)
617 | */
618 | void onUpdate(float x, float y, float degrees);
619 | }
620 | }
621 |
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/randomdraglayout/src/main/res/values/strings.xml:
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1 |
2 | RandomDragLayout
3 |
4 |
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/randomdraglayout/src/test/java/com/wuyr/randomdraglayout/ExampleUnitTest.java:
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1 | package com.wuyr.randomdraglayout;
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() {
15 | assertEquals(4, 2 + 2);
16 | }
17 | }
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/settings.gradle:
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1 | include ':randomdraglayout'
2 |
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