Android仿iOS侧滑退出当前界面功能

getWindow().getDecorView() 

<style name="AppTheme.Slide" parent="@style/AppTheme"> 
  <!--Required--> 
  <item name="android:windowBackground">@android:color/transparent</item> 
  <item name="android:windowIsTranslucent">true</item> 
  <item name="android:windowAnimationStyle">@style/AppTheme.Slide.Animation</item> 
 </style> 

/** 
 * 根据手指移动的距离判断是否拦截触摸事件 
 * 
 * @param ev 
 * @return 
 */ 
 @Override 
 public boolean onInterceptTouchEvent(MotionEvent ev) { 
 
  int x = (int) ev.getX(); 
  int y = (int) ev.getY(); 
  boolean mIntercept = false; 
  switch (ev.getAction()) { 
   case MotionEvent.ACTION_DOWN: 
 
    mInterceptDownX = x; 
    mLastInterceptX = x; 
    mLastInterceptY = y; 
    break; 
   case MotionEvent.ACTION_MOVE: 
 
    int moveX = x - mLastInterceptX; 
    int moveY = y - mLastInterceptY; 
    //按下的位置的X位置小于屏幕的十分之一，并且x移动的距离大于y移动的距离，就拦截 
    if (mInterceptDownX < (getWidth() / 10) && Math.abs(moveX) > Math.abs(moveY)) { 
     mIntercept = true; 
    } else { 
     mIntercept = false; 
    } 
    mLastInterceptX = x; 
    mLastInterceptY = y; 
 
    break; 
   case MotionEvent.ACTION_UP: //抬起的时候重置参数 
    mIntercept = false; 
    mInterceptDownX = mLastInterceptX = mLastInterceptY = 0; 
    break; 
  } 
  return mIntercept; 
 } 
 
 private int mTouchDownX; 
 private int mLastTouchX; 
 private int mLastTouchY; 
 
 @Override 
 public boolean onTouchEvent(MotionEvent event) { 
 
  boolean mConsumed = false; 
  int x = (int) event.getX(); 
  int y = (int) event.getY(); 
  switch (event.getAction()) { 
   case MotionEvent.ACTION_DOWN: 
 
    mTouchDownX = x; 
    mLastTouchX = x; 
    mLastTouchY = y; 
    break; 
   case MotionEvent.ACTION_MOVE: 
 
    int moveX = x - mLastTouchX; 
    int moveY = y - mLastTouchY; 
    if (mTouchDownX < (getWidth() / 10) && Math.abs(moveX) > Math.abs(moveY) && !mConsumed) { 
     mConsumed = true; 
    } 
    if (mConsumed) { 
     int rightMoveX = (int) (mLastTouchX - event.getX()); 
     if ((getScrollX() + rightMoveX) > 0) { //向左滑动的时候，getScrollX()和rightMoveX都大于0，所以禁止滑动 
      scrollTo(0, 0); 
     } else { 
      scrollBy(rightMoveX, 0); 
     } 
    } 
    mLastTouchX = x; 
    mLastTouchY = y; 
    break; 
   case MotionEvent.ACTION_UP: 
 
    mConsumed = false; 
    mTouchDownX = mLastTouchX = mLastTouchY = 0; 
    if(-getScrollX()<getWidth()/2){ //偏移量不到屏幕宽度的一般，就回到最初的位置 
     scrollBack(); 
    }else{ 
     scrollFinish(); 
    } 
    break; 
   case MotionEvent.ACTION_CANCEL: 
    mConsumed = false; 
    mTouchDownX = mLastTouchX = mLastTouchY = 0; 
    if(-getScrollX()<getWidth()/2){ //偏移量不到屏幕宽度的一般，就回到最初的位置 
     scrollBack(); 
    }else{ 
     scrollFinish(); 
    } 
    break; 
  } 
  return true; 
 } 

/** 
 * 滑动到最初的位置 
 */ 
 private void scrollBack() { 
  int startX = getScrollX(); 
  int dx = -getScrollX(); 
  mScroller.startScroll(startX, 0, dx, 0, 300); 
  invalidate(); 
 } 
 
 /** 
 * 向右滑动关闭 
 */ 
 private void scrollFinish(){ 
  int dx = -getScrollX() - getWidth(); 
  mScroller.startScroll(getScrollX(),0,dx,0,300); 
  invalidate(); 
 } 

@Override 
 protected void onCreate(@Nullable Bundle savedInstanceState) { 
  super.onCreate(savedInstanceState); 
  if(enableRightSliding()){ 
 
   SlidingLayout slidingLayout = new SlidingLayout(this); 
   slidingLayout.replaceCurrentLayout(this); 
  } 
 
 } 
 
 /** 
  * 子类重写这个方法true:允许向右滑动，false:禁止向右滑动 
  * @return 
  */ 
 protected boolean enableRightSliding(){ 
  return false; 
 }