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 tim_ding@qq.com
 */
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 mViewPagers = new LinkedList();
private List mWebViews = new LinkedList();
private List mHorScrollView = new LinkedList();
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
 */
@Override
public 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) return true;
}
break;
}

return super.onInterceptTouchEvent(ev);
}

@Override
public 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) 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 mViewPagers, ViewGroup parent){
int childCount = parent.getChildCount();
for(int i=0; iView 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 mHor,ViewGroup parent){
int childCount = parent.getChildCount();
for(int i=0; iView 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 mWebViews, ViewGroup parent){
int childCount = parent.getChildCount();
for(int i=0; iView 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 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 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 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;
}

@Override
protected 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);
}
}

@Override
protected 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item
mScroller.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();
}

@Override
public 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();
}
}
}


}

SwipeBackActivity

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;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
layout = (SwipeBackLayout) LayoutInflater.from(this).inflate(
R.layout.base, null);
layout.attachToActivity(this);
}
@Override
public 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：

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，

@android:color/transparent<--不设置color透明，设置drawable/你的图片-->