仿ios右滑销毁activity

废话不多说，直接上代码

SwipeBackLayout

package com.tim.swideback.widget;import java.util.LinkedList;import java.util.List;import android.app.Activity;import android.content.Context;import android.content.res.TypedArray;import android.graphics.Canvas;import android.graphics.Rect;import android.graphics.drawable.Drawable;import android.support.v4.view.ViewPager;import android.util.AttributeSet;import android.util.Log;import android.view.MotionEvent;import android.view.View;import android.view.ViewConfiguration;import android.view.ViewGroup;import android.webkit.WebView;import android.widget.FrameLayout;import android.widget.HorizontalScrollView;import android.widget.Scroller;import com.tim.swideback.R;/** * @author tim * @date 2014-12-19 * @email [e-mail] */public class SwipeBackLayout extends FrameLayout {/** * 父容器 */private View mContentView;/** * 有效touch距离 */private int mTouchSlop;/** * 按下的X坐标 */private int downX;/** * 按下的Y坐标 */private int downY;/** * 临时的X坐标 */private int tempX;/** * 滚动类 */private Scroller mScroller;/** * 宽度 */private int viewWidth;private boolean isSilding;private boolean isFinish;private Drawable mShadowDrawable;private Activity mActivity;private List<ViewPager> mViewPagers = new LinkedList<ViewPager>();private List<WebView> mWebViews = new LinkedList<WebView>();private List<HorizontalScrollView> mHorScrollView = new LinkedList<HorizontalScrollView>();public SwipeBackLayout(Context context, AttributeSet attrs) {this(context, attrs, 0);}public SwipeBackLayout(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();mScroller = new Scroller(context);mShadowDrawable = getResources().getDrawable(R.drawable.shadow_left);}public void attachToActivity(Activity activity) {mActivity = activity;TypedArray a = activity.getTheme().obtainStyledAttributes(new int[] { android.R.attr.windowBackground });int background = a.getResourceId(0, 0);a.recycle();ViewGroup decor = (ViewGroup) activity.getWindow().getDecorView();ViewGroup decorChild = (ViewGroup) decor.getChildAt(0);decorChild.setBackgroundResource(background);decor.removeView(decorChild);addView(decorChild);setContentView(decorChild);decor.addView(this);}private void setContentView(View decorChild) {mContentView = (View) decorChild.getParent();}/** * 事件拦截操作 */@Overridepublic boolean onInterceptTouchEvent(MotionEvent ev) {//处理ViewPager冲突问题ViewPager mViewPager = getTouchViewPager(mViewPagers, ev);Log.e("tim", "mViewPager = " + mViewPager);if(mViewPager != null && mViewPager.getCurrentItem() != 0){return super.onInterceptTouchEvent(ev);}//处理Webview冲突问题WebView webView= getTouchWebView(mWebViews,ev);if(webView != null){Log.e("tim", "mwebView = " + webView.getHeight());}if(webView != null && webView.getScrollX() != 0){return super.onInterceptTouchEvent(ev);}HorizontalScrollView view = getTouchHorScrollerView(mHorScrollView,ev);Log.e("tim", "mHo = " + view);if(view != null && view.getScrollX() != 0){return super.onInterceptTouchEvent(ev);}switch (ev.getAction()) {case MotionEvent.ACTION_DOWN:downX = tempX = (int) ev.getRawX();downY = (int) ev.getRawY();break;case MotionEvent.ACTION_MOVE:int moveX = (int) ev.getRawX();// 满足此条件屏蔽SildingFinishLayout里面子类的touch事件if (moveX - downX > mTouchSlop&& Math.abs((int) ev.getRawY() - downY) < mTouchSlop) {return true;}break;}return super.onInterceptTouchEvent(ev);}@Overridepublic boolean onTouchEvent(MotionEvent event) {switch (event.getAction()) {case MotionEvent.ACTION_MOVE:int moveX = (int) event.getRawX();int deltaX = tempX - moveX;tempX = moveX;if (moveX - downX > mTouchSlop&& Math.abs((int) event.getRawY() - downY) < mTouchSlop) {isSilding = true;}if (moveX - downX >= 0 && isSilding) {mContentView.scrollBy(deltaX, 0);}break;case MotionEvent.ACTION_UP:isSilding = false;if (mContentView.getScrollX() <= -viewWidth / 2) {isFinish = true;scrollRight();} else {scrollOrigin();isFinish = false;}break;}return true;}/** * 获取SwipeBackLayout里面的ViewPager的集合 * @param mViewPagers * @param parent */private void getAlLViewPager(List<ViewPager> mViewPagers, ViewGroup parent){int childCount = parent.getChildCount();for(int i=0; i<childCount; i++){View child = parent.getChildAt(i);if(child instanceof ViewPager){mViewPagers.add((ViewPager)child);}else if(child instanceof ViewGroup){getAlLViewPager(mViewPagers, (ViewGroup)child);}}}private void getAllHorizontalScrollView(List<HorizontalScrollView> mHor,ViewGroup parent){int childCount = parent.getChildCount();for(int i=0; i<childCount; i++){View child = parent.getChildAt(i);if(child instanceof HorizontalScrollView){mHorScrollView.add((HorizontalScrollView)child);}else if(child instanceof ViewGroup){getAllHorizontalScrollView(mHorScrollView, (ViewGroup)child);}}}/** * 获取SwipeBackLayout里面的WebView的集合 * @param mViewPagers * @param parent */private void getAlLWebViews(List<WebView> mWebViews, ViewGroup parent){int childCount = parent.getChildCount();for(int i=0; i<childCount; i++){View child = parent.getChildAt(i);if(child instanceof WebView){mWebViews.add((WebView)child);}else if(child instanceof ViewGroup){getAlLWebViews(mWebViews, (ViewGroup)child);}}}/** * 返回我们touch的WebView * @param mWebViews * @param ev * @return */private WebView getTouchWebView(List<WebView> mWebViews, MotionEvent ev){if(mWebViews == null || mWebViews.size() == 0){return null;}Rect mRect = new Rect();for(final WebView v : mWebViews){         v.getGlobalVisibleRect(mRect);Log.e("tim", "left:"+mRect.left+",x:"+ev.getX()+",right:"+mRect.right+",top:"+mRect.top+",y:"+ev.getY()+",bottom:"+mRect.bottom);//        v.getLocalVisibleRect(mRect);//Log.i(TAG, "left:"+mRect.left+",x:"+ev.getX()+",right:"+mRect.right+",top:"+mRect.top+",y:"+ev.getY()+",bottom:"+mRect.bottom);if(mRect.contains((int)ev.getX(), (int)ev.getY())){return v;}}return null;}/** * 返回我们touch的ViewPager * @param mViewPagers * @param ev * @return */private ViewPager getTouchViewPager(List<ViewPager> mViewPagers, MotionEvent ev){if(mViewPagers == null || mViewPagers.size() == 0){return null;}Rect mRect = new Rect();for(ViewPager v : mViewPagers){v.getHitRect(mRect);if(mRect.contains((int)ev.getX(), (int)ev.getY())){return v;}}return null;}private HorizontalScrollView getTouchHorScrollerView(List<HorizontalScrollView> mScrollerView, MotionEvent ev){if(mScrollerView == null || mScrollerView.size() == 0){return null;}Rect mRect = new Rect();for(HorizontalScrollView v : mScrollerView){v.getGlobalVisibleRect(mRect);if(mRect.contains((int)ev.getX(), (int)ev.getY())){return v;}}return null;}@Overrideprotected void onLayout(boolean changed, int l, int t, int r, int b) {super.onLayout(changed, l, t, r, b);//Log.e("tim","change " + changed);if (changed) {viewWidth = this.getWidth();getAlLViewPager(mViewPagers, this);getAlLWebViews(mWebViews, this);}}@Overrideprotected void dispatchDraw(Canvas canvas) {super.dispatchDraw(canvas);if (mShadowDrawable != null && mContentView != null) {int left = mContentView.getLeft()- mShadowDrawable.getIntrinsicWidth();int right = left + mShadowDrawable.getIntrinsicWidth();int top = mContentView.getTop();int bottom = mContentView.getBottom();mShadowDrawable.setBounds(left, top, right, bottom);mShadowDrawable.draw(canvas);}}/** * 滚动出界面 */private void scrollRight() {final int delta = (viewWidth + mContentView.getScrollX());// 调用startScroll方法来设置一些滚动的参数，我们在computeScroll()方法中调用scrollTo来滚动itemmScroller.startScroll(mContentView.getScrollX(), 0, -delta + 1, 0,Math.abs(delta));postInvalidate();}/** * 滚动到起始位置 */private void scrollOrigin() {int delta = mContentView.getScrollX();mScroller.startScroll(mContentView.getScrollX(), 0, -delta, 0,Math.abs(delta));postInvalidate();}@Overridepublic void computeScroll() {// 调用startScroll的时候scroller.computeScrollOffset()返回true，if (mScroller.computeScrollOffset()) {mContentView.scrollTo(mScroller.getCurrX(), mScroller.getCurrY());postInvalidate();if (mScroller.isFinished() && isFinish) {mActivity.finish();}}}}

</pre><p></p><p>SwipeBackActivity</p><p></p><pre code_snippet_id="1789696" snippet_file_name="blog_20160728_2_9862409" name="code" class="html">package com.tim.swideback.widget;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.LayoutInflater;import com.tim.swideback.R;/** * 想要实现向右滑动删除Activity效果只需要继承SwipeBackActivity即可，如果当前页面含有ViewPager * 只需要调用SwipeBackLayout的setViewPager()方法即可 * 继承类无需onKeyDown    当前activity返回按钮只需要Activity.this.finish();即可 * */public class SwipeBackActivity extends Activity {protected SwipeBackLayout layout;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);layout = (SwipeBackLayout) LayoutInflater.from(this).inflate(R.layout.base, null);layout.attachToActivity(this);}@Overridepublic void startActivity(Intent intent) {super.startActivity(intent);} }

然后你自己的activity继承SwipeBackLayout，即可实现iOS上的，右滑销毁activity的效果

另外：AppTheme记得加一下两个属性，不然滑动时，背景不透明，看不到下面的界面：

<style name="AppTheme" parent="AppBaseTheme">        <!-- All customizations that are NOT specific to a particular API-level can go here. -->         <item name="android:windowNoTitle">true</item>          <item name="android:windowIsTranslucent">true</item>        <item name="android:windowBackground">@android:color/transparent</item>        <item name="android:windowAnimationStyle">@style/animation_translucent_translate</item><--这里是你自己的activity切换动画，可以不要-->    </style><style name="animation_translucent_translate" parent="@android:style/Animation.Translucent">        <item name="android:windowEnterAnimation">@anim/base_slide_right_in</item>          <item name="android:windowExitAnimation">@anim/base_slide_right_out</item>      </style>

PS:这两个属性，顺便也解决了app启动时，会黑屏或白屏一瞬间，再进入欢迎界面的问题

如果觉得这样，欢迎界面启动看上去慢的话，就单独给欢迎界面设置theme，

<item name="android:windowBackground">@android:color/transparent</item><--不设置color透明，设置drawable/你的图片-->