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skymxcskymxc
committedJul 23, 2017
增加DragViewHelper
1 parent 7e8ec0d commit a95bb69

28 files changed

+738
-3837
lines changed
 

‎drag/.gitignore

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/build

‎drag/README.md

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# ViewDragHelper
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## 侧滑菜单实现
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> 主要是 'ViewDragHelper' 的使用，使用侧滑菜单做实践

‎drag/build.gradle

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apply plugin: 'com.android.application'
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android {
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compileSdkVersion 25
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buildToolsVersion "25.0.2"
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defaultConfig {
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applicationId "com.skymxc.demo.drag"
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minSdkVersion 19
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targetSdkVersion 25
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versionCode 1
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versionName "1.0"
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testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
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}
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buildTypes {
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release {
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minifyEnabled false
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proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
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}
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}
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}
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dependencies {
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compile fileTree(include: ['*.jar'], dir: 'libs')
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androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
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exclude group: 'com.android.support', module: 'support-annotations'
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})
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compile 'com.android.support:appcompat-v7:25.3.1'
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compile 'com.android.support.constraint:constraint-layout:1.0.2'
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testCompile 'junit:junit:4.12'
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compile 'com.android.support:recyclerview-v7:25.3.1'
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}

‎drag/proguard-rules.pro

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# Add project specific ProGuard rules here.
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# By default, the flags in this file are appended to flags specified
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# in C:\Users\Administrator\AppData\Local\Android\Sdk/tools/proguard/proguard-android.txt
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# You can edit the include path and order by changing the proguardFiles
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# directive in build.gradle.
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#
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# For more details, see
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# http://developer.android.com/guide/developing/tools/proguard.html
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# Add any project specific keep options here:
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# If your project uses WebView with JS, uncomment the following
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# and specify the fully qualified class name to the JavaScript interface
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# class:
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#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
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# public *;
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#}
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# Uncomment this to preserve the line number information for
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# debugging stack traces.
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#-keepattributes SourceFile,LineNumberTable
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# If you keep the line number information, uncomment this to
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# hide the original source file name.
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#-renamesourcefileattribute SourceFile

‎drag/src/androidTest/java/com/skymxc/demo/drag/ExampleInstrumentedTest.java

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package com.skymxc.demo.drag;
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import android.content.Context;
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import android.support.test.InstrumentationRegistry;
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import android.support.test.runner.AndroidJUnit4;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import static org.junit.Assert.*;
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/**
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* Instrumentation test, which will execute on an Android device.
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*
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* @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
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*/
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@RunWith(AndroidJUnit4.class)
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public class ExampleInstrumentedTest {
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@Test
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public void useAppContext() throws Exception {
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// Context of the app under test.
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Context appContext = InstrumentationRegistry.getTargetContext();
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assertEquals("com.skymxc.demo.drag", appContext.getPackageName());
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}
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}

‎drag/src/main/AndroidManifest.xml

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<?xml version="1.0" encoding="utf-8"?>
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<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.skymxc.demo.drag">
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<application android:allowBackup="true" android:icon="@mipmap/ic_launcher"
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android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round"
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android:supportsRtl="true" android:theme="@style/AppTheme">
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<activity android:name=".MainActivity">
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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</application>
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</manifest>

‎drag/src/main/java/com/skymxc/demo/drag/DragLayout.java

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package com.skymxc.demo.drag;
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import android.content.Context;
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import android.support.annotation.Nullable;
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import android.support.v4.widget.ViewDragHelper;
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import android.util.AttributeSet;
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import android.util.Log;
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import android.view.MotionEvent;
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import android.view.View;
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import android.widget.RelativeLayout;
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/**
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* Created by mxc on 2017/7/23.
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* description:
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*/
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public class DragLayout extends RelativeLayout {
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private static final String TAG = "SwipeLayout";
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private View mContentView;
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private int mDragDistance ;
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private ViewDragHelper mDragHelper;
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public DragLayout(Context context) {
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this(context,null);
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}
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public DragLayout(Context context, @Nullable AttributeSet attrs) {
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this(context, attrs,0);
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}
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public DragLayout(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
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super(context, attrs, defStyleAttr);
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mDragHelper = ViewDragHelper.create(this,1.0f,new DragHelper());
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}
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/**
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* 加载view完毕后
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*/
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@Override
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protected void onFinishInflate() {
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super.onFinishInflate();
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//这里写死了，注意
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mContentView= getChildAt(0);
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}
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@Override
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public boolean onInterceptTouchEvent(MotionEvent ev) {
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//交由 DragHelper 去判断 是否应该拦截该事件
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return mDragHelper.shouldInterceptTouchEvent(ev);
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}
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@Override
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public boolean onTouchEvent(MotionEvent event) {
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//如果事件被拦截，我们就将事件交由 DragHelper去处理
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mDragHelper.processTouchEvent(event);
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return true;
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}
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@Override
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public void computeScroll() {
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super.computeScroll();
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// if (mDragHelper.continueSettling(true)){
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// ViewCompat.postInvalidateOnAnimation(this);
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// }
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}
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class DragHelper extends ViewDragHelper.Callback{
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/**
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* 决定是否捕获此view
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* 这里自由决定
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* @param child 待捕获的子元素
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* @param pointerId
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* @return 是否捕获
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*/
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@Override
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public boolean tryCaptureView(View child, int pointerId) {
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return child==mContentView;
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}
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/**
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* 允许的拖动范围 水平范围内
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* @param child
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* @return
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*/
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// @Override
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// public int getViewHorizontalDragRange(View child) {
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// Log.e(TAG,"getViewHorizontalDragRange--DragDistance-->"+mDragDistance);
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// return mDragDistance;
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// }
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/**
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* 水平 拖动
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* @param child 拖动的元素
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* @param left 将要去往的位置
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* @param dx 拖动了的距离
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* @return 新位置
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*/
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@Override
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public int clampViewPositionHorizontal(View child, int left, int dx) {
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//限制在容器内
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int leftBound = getPaddingLeft();
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int rightBound = getWidth() - mContentView.getWidth();
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int newLeft = Math.min(Math.max(left,leftBound),rightBound);
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return newLeft;
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}
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/**
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* 垂直拖动
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* @param child
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* @param top
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* @param dy
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* @return
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*/
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@Override
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public int clampViewPositionVertical(View child, int top, int dy) {
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int topBound = getPaddingTop();
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int bottomBound = getHeight() - mContentView.getHeight();
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int newTop = Math.min(Math.max(top,topBound),bottomBound);
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return newTop;
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}
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@Override
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public void onViewDragStateChanged(int state) {
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switch (state){
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case ViewDragHelper.STATE_IDLE:
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Log.e("onViewDragStateChanged","state-->STATE_IDLE"+state);
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break;
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case ViewDragHelper.STATE_DRAGGING:
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Log.e("onViewDragStateChanged","state-->STATE_DRAGGING"+state);
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break;
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case ViewDragHelper.STATE_SETTLING:
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Log.e("onViewDragStateChanged","state-->STATE_SETTLING"+state);
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break;
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}
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}
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/**
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* 当拖动的view position发生改变时触发
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* @param changedView 拖动的view
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* @param left 新位置 X轴
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* @param top 新位置 Y轴
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* @param dx 从上次位置 到这次位置移动的距离 X轴
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* @param dy 从上次位置 到这次位置移动的距离 Y轴
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*/
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@Override
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public void onViewPositionChanged(View changedView, int left, int top, int dx, int dy) {
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}
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/**
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* 停止拖动
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* @param releasedChild
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* @param xvel x 轴速度 每秒移动的像素值
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* @param yvel Y 轴速度 每秒移动的像素值
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*/
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@Override
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public void onViewReleased(View releasedChild, float xvel, float yvel) {
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Log.e("onViewReleased","xvel-->"+xvel+";yvel-->"+yvel);
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}
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}
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}

‎drag/src/main/java/com/skymxc/demo/drag/MainActivity.java

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package com.skymxc.demo.drag;
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import android.os.Bundle;
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import android.support.v7.app.AppCompatActivity;
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import android.support.v7.widget.DividerItemDecoration;
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import android.support.v7.widget.LinearLayoutManager;
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import android.support.v7.widget.RecyclerView;
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import android.widget.Toast;
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public class MainActivity extends AppCompatActivity implements MyAdapter.OnActionListener {
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private RecyclerView recyclerView;
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_main);
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recyclerView = (RecyclerView) findViewById(R.id.recycle);
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recyclerView.setLayoutManager(new LinearLayoutManager(this));
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recyclerView.addItemDecoration(new DividerItemDecoration(this, DividerItemDecoration.VERTICAL));
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MyAdapter adapter = new MyAdapter(this);
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adapter.setOnActionListener(this);
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recyclerView.setAdapter(adapter);
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}
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@Override
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public void onDelete(String item, int position) {
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Toast.makeText(this, "delete->" + item, Toast.LENGTH_SHORT).show();
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}
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@Override
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public void onUpdate(String item, int position) {
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Toast.makeText(this, "update->" + item, Toast.LENGTH_SHORT).show();
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}
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}

‎drag/src/main/java/com/skymxc/demo/drag/MyAdapter.java

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package com.skymxc.demo.drag;
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import android.content.Context;
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import android.support.v7.widget.RecyclerView;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.TextView;
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/**
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* Created by mxc on 2017/7/23.
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* description:
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*/
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public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
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private String[] items = new String[]{"item1", "item2", "item3", "item4", "item5",
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"item6", "item7", "item8", "item9", "item10", "item11",
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"item12", "item13", "item14", "item15", "item16"};
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private LayoutInflater inflater;
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private OnActionListener onActionListener;
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public MyAdapter(Context context) {
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this.inflater = LayoutInflater.from(context);
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}
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@Override
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public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
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return new MyViewHolder(inflater.inflate(R.layout.layout_item, null));
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}
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@Override
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public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
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if (holder instanceof MyViewHolder) {
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MyViewHolder viewHolder = (MyViewHolder) holder;
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String item = items[position];
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viewHolder.tvContent.setText(item);
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viewHolder.actionUpdate.setTag(position);
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viewHolder.actionDel.setTag(position);
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viewHolder.actionDel.setOnClickListener(onClickListener);
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viewHolder.tvContent.setTag(position);
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viewHolder.tvContent.setOnClickListener(onClickListener);
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viewHolder.actionUpdate.setOnClickListener(onClickListener);
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}
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}
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@Override
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public int getItemCount() {
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return items.length;
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}
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private View.OnClickListener onClickListener = new View.OnClickListener() {
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@Override
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public void onClick(View v) {
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int position = (int) v.getTag();
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String item = items[position];
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switch (v.getId()) {
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case R.id.action_delete:
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onActionListener.onDelete(item, position);
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break;
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case R.id.action_update:
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onActionListener.onUpdate(item, position);
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break;
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case R.id.content:
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onActionListener.onClick(item, position);
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break;
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}
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}
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};
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public void setOnActionListener(OnActionListener onActionListener) {
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this.onActionListener = onActionListener;
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}
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static class MyViewHolder extends RecyclerView.ViewHolder {
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TextView tvContent;
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TextView actionDel;
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TextView actionUpdate;
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public MyViewHolder(View itemView) {
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super(itemView);
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ViewGroup.LayoutParams layoutParams = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
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itemView.setLayoutParams(layoutParams);
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tvContent = (TextView) itemView.findViewById(R.id.content);
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actionDel = (TextView) itemView.findViewById(R.id.action_delete);
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actionUpdate = (TextView) itemView.findViewById(R.id.action_update);
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}
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}
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public interface OnActionListener {
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void onDelete(String item, int position);
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void onUpdate(String item, int position);
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void onClick(String item, int position);
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}
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}

‎drag/src/main/java/com/skymxc/demo/drag/SwipeItemLayout.java

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package com.skymxc.demo.drag;
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import android.content.Context;
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import android.support.annotation.Nullable;
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import android.support.v4.view.ViewCompat;
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import android.support.v4.widget.ViewDragHelper;
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import android.util.AttributeSet;
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import android.util.Log;
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import android.view.MotionEvent;
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import android.view.View;
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import android.widget.LinearLayout;
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/**
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* Created by mxc on 2017/7/23.
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* description:
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*/
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public class SwipeItemLayout extends LinearLayout {
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private final double AUTO_OPEN_SPEED_LIMIT = 500.0;
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private View mActionView;
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private View mContentView;
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private int mDragDistance;
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private ViewDragHelper mDragHelper;
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private boolean isOpen;
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public SwipeItemLayout(Context context) {
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this(context, null);
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}
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public SwipeItemLayout(Context context, @Nullable AttributeSet attrs) {
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this(context, attrs, 0);
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}
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public SwipeItemLayout(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
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super(context, attrs, defStyleAttr);
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mDragHelper = ViewDragHelper.create(this, 1.0f, new SwipeItemDragHelper());
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}
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@Override
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protected void onFinishInflate() {
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super.onFinishInflate();
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mContentView = getChildAt(0);
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mActionView = getChildAt(1);
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}
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@Override
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protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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super.onMeasure(widthMeasureSpec, heightMeasureSpec);
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mDragDistance = mActionView.getMeasuredWidth();
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}
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@Override
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public boolean onInterceptTouchEvent(MotionEvent ev) {
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return mDragHelper.shouldInterceptTouchEvent(ev);
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}
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@Override
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public boolean onTouchEvent(MotionEvent event) {
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mDragHelper.processTouchEvent(event);
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return true;
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}
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/**
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* 因为要在 DragHelper的中使用动画
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*/
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@Override
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public void computeScroll() {
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super.computeScroll();
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if (mDragHelper.continueSettling(true)) {
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ViewCompat.postInvalidateOnAnimation(this);
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}
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}
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class SwipeItemDragHelper extends ViewDragHelper.Callback {
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private int dragDx;
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@Override
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public boolean tryCaptureView(View child, int pointerId) {
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return child == mContentView || child == mActionView;
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}
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@Override
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public int clampViewPositionHorizontal(View child, int left, int dx) {
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dragDx+=dx;
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if (child == mContentView) {
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/**
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* 这个位置 的范围应该是在 0和 -dragDistance之间；最大是0；最小是 -dragDistance
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*/
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int leftBound = getPaddingLeft();
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int minLeft = -leftBound - mDragDistance;
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int newLeft = Math.min(Math.max(minLeft, left), 0);
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return newLeft;
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} else {
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/**
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* 这个view的位置范围应该是在 父布局的宽度-actionView的宽和父布局的宽度之间；
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*/
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int leftBound = getPaddingLeft();
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int minLeft = getWidth() - leftBound - mActionView.getWidth();
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int newLeft = Math.min(Math.max(minLeft, left), getWidth());
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return newLeft;
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}
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}
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@Override
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public void onViewPositionChanged(View changedView, int left, int top, int dx, int dy) {
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//同时移动
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if (changedView == mContentView) {
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mActionView.offsetLeftAndRight(dx);
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} else {
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mContentView.offsetLeftAndRight(dx);
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}
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invalidate();
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// Log.e("onViewPosition", "dx-->" + dx);
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}
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@Override
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public void onViewReleased(View releasedChild, float xvel, float yvel) {
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/**
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* 这里的速度 是这样计算的 每秒的拖动的像素 值
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* 速度判断
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* 如果向→滑动 速度肯定是 正数；
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* 如果向←滑动 速度肯定是 负数
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* 如果 拖动距离 是 actionView的 ¼ 就允许打开或关闭
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*/
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//根据速度决定是否打开
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boolean settleToOpen = false;
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float realVel = Math.abs(xvel);
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int realDragX = Math.abs(dragDx);
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if (realVel > AUTO_OPEN_SPEED_LIMIT) { //根据速度判断
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if (xvel > 0) { //右滑
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settleToOpen = false;
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} else { //左滑
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settleToOpen = true;
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}
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}else if(realDragX> mDragDistance/4){ //根据拖动距离判断
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if (dragDx>0){ //右滑
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settleToOpen = false;
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}else{
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settleToOpen = true;
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}
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}
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isOpen = settleToOpen;
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int settleDestX = isOpen ? -mDragDistance : 0;
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Log.e("onViewReleased", "settleToOpen->" + settleToOpen + ";destX->" + settleDestX + ";xvel->" + xvel + ";dragDx-->" + dragDx);
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mDragHelper.smoothSlideViewTo(mContentView, settleDestX, 0);
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ViewCompat.postInvalidateOnAnimation(SwipeItemLayout.this);
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dragDx = 0;
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}
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}
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}

‎drag/src/main/java/com/skymxc/demo/drag/SwipeRecyclerView.java

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package com.skymxc.demo.drag;
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import android.content.Context;
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import android.support.annotation.Nullable;
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import android.support.v7.widget.RecyclerView;
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import android.util.AttributeSet;
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import android.view.MotionEvent;
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/**
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* Created by mxc on 2017/7/23.
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* description:
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*/
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public class SwipeRecyclerView extends RecyclerView {
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public SwipeRecyclerView(Context context) {
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super(context);
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}
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public SwipeRecyclerView(Context context, @Nullable AttributeSet attrs) {
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super(context, attrs);
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}
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public SwipeRecyclerView(Context context, @Nullable AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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}
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@Override
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public boolean onTouchEvent(MotionEvent e) {
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return super.onTouchEvent(e);
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}
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}

‎drag/src/main/res/layout/activity_main.xml

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<?xml version="1.0" encoding="utf-8"?>
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<LinearLayout
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xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:app="http://schemas.android.com/apk/res-auto"
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xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
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android:layout_height="match_parent" tools:context="com.skymxc.demo.drag.MainActivity">
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<!--<com.skymxc.demo.drag.DragLayout-->
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<!--android:layout_width="match_parent"-->
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<!--android:layout_height="match_parent">-->
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<!--<TextView-->
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<!--android:layout_width="60dp"-->
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<!--android:layout_height="60dp"-->
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<!--android:gravity="center"-->
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<!--android:layout_centerInParent="true"-->
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<!--android:background="@android:color/darker_gray"-->
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<!--android:text="content"/>-->
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<!--</com.skymxc.demo.drag.DragLayout>-->
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<!--<com.skymxc.demo.drag.SwipeLayout-->
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<!--android:layout_width="match_parent"-->
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<!--android:layout_height="match_parent"-->
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<!--android:orientation="horizontal">-->
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<!--<LinearLayout-->
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<!--android:layout_width="match_parent"-->
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<!--android:layout_height="60dp"-->
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<!--android:orientation="horizontal"-->
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<!--android:background="@android:color/darker_gray">-->
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<!--</LinearLayout>-->
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<!--<LinearLayout-->
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<!--android:layout_width="100dp"-->
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<!--android:layout_height="60dp"-->
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<!--android:background="@android:color/holo_red_light"></LinearLayout>-->
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<!--</com.skymxc.demo.drag.SwipeLayout>-->
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<android.support.v7.widget.RecyclerView
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android:id="@+id/recycle"
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android:layout_width="match_parent"
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android:layout_height="match_parent"></android.support.v7.widget.RecyclerView>
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</LinearLayout>

‎drag/src/main/res/layout/layout_item.xml

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<?xml version="1.0" encoding="utf-8"?>
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<com.skymxc.demo.drag.SwipeItemLayout xmlns:android="http://schemas.android.com/apk/res/android"
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android:orientation="horizontal" android:layout_width="match_parent"
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android:layout_height="match_parent">
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<LinearLayout
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android:layout_width="match_parent"
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android:layout_height="60dp"
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android:orientation="horizontal"
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android:paddingLeft="10dp"
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android:background="@android:color/darker_gray">
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<ImageView
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android:layout_width="30dp"
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android:layout_height="30dp"
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android:adjustViewBounds="true"
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android:layout_gravity="center_vertical"
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android:src="@mipmap/ic_launcher"/>
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<TextView
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android:id="@+id/content"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_gravity="center_vertical"
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android:layout_marginLeft="10dp"
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android:text="content"
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android:textColor="@android:color/white"
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android:clickable="true"/>
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</LinearLayout>
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<LinearLayout
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android:layout_width="200dp"
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android:layout_height="60dp"
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android:orientation="horizontal">
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<TextView
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android:id="@+id/action_delete"
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android:layout_width="0dp"
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android:layout_weight="1"
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android:background="@android:color/holo_red_light"
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android:layout_height="match_parent"
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android:text="删除"
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android:textColor="@android:color/white"
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android:gravity="center"
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android:clickable="true"/>
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<TextView
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android:id="@+id/action_update"
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android:layout_width="0dp"
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android:layout_weight="1"
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android:background="@android:color/holo_orange_dark"
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android:layout_height="match_parent"
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android:text="修改"
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android:textColor="@android:color/white"
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android:gravity="center"
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android:clickable="true"/>
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</LinearLayout>
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</com.skymxc.demo.drag.SwipeItemLayout>

‎drag/src/main/res/mipmap-hdpi/ic_launcher.png

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‎drag/src/main/res/mipmap-hdpi/ic_launcher_round.png

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‎drag/src/main/res/mipmap-mdpi/ic_launcher.png

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‎drag/src/main/res/mipmap-mdpi/ic_launcher_round.png

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‎drag/src/main/res/mipmap-xhdpi/ic_launcher.png

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‎drag/src/main/res/mipmap-xhdpi/ic_launcher_round.png

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‎drag/src/main/res/mipmap-xxhdpi/ic_launcher.png

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‎drag/src/main/res/mipmap-xxhdpi/ic_launcher_round.png

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‎drag/src/main/res/mipmap-xxxhdpi/ic_launcher.png

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‎drag/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png

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‎drag/src/main/res/values/colors.xml

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<?xml version="1.0" encoding="utf-8"?>
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<resources>
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<color name="colorPrimary">#3F51B5</color>
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<color name="colorPrimaryDark">#303F9F</color>
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<color name="colorAccent">#FF4081</color>
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</resources>

‎drag/src/main/res/values/strings.xml

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<resources>
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<string name="app_name">drag</string>
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</resources>

‎drag/src/main/res/values/styles.xml

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<resources>
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<!-- Base application theme. -->
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<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
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<!-- Customize your theme here. -->
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<item name="colorPrimary">@color/colorPrimary</item>
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<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
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<item name="colorAccent">@color/colorAccent</item>
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</style>
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</resources>

‎drag/src/test/java/com/skymxc/demo/drag/ExampleUnitTest.java

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package com.skymxc.demo.drag;
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import org.junit.Test;
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import static org.junit.Assert.*;
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/**
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* Example local unit test, which will execute on the development machine (host).
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*
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* @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
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*/
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public class ExampleUnitTest {
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@Test
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public void addition_isCorrect() throws Exception {
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assertEquals(4, 2 + 2);
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}
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}

‎projectFilesBackup/.idea/workspace.xml

-3,837
This file was deleted.

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