private ViewDragHelper mDrragHelper;
  public SlideViewGroup(@NonNull Context context) {
    this(context,null);
  }

  public SlideViewGroup(@NonNull Context context, @Nullable AttributeSet attrs) {
    this(context, attrs,0);
  }

  public SlideViewGroup(@NonNull Context context, @Nullable AttributeSet attrs, @AttrRes int defStyleAttr) {

    super(context, attrs, defStyleAttr);
    mDrragHelper=ViewDragHelper.create(this,1.0f,mCallback);

  }

@Override
  public boolean onInterceptTouchEvent(MotionEvent event) {
    //交给viewdrag去拦截
    //事件分发拦截
    float x=0;
    int action = event.getAction();
    switch(action){
      case MotionEvent.ACTION_DOWN:
        x =event.getX();
        break;
        // return false;
      case MotionEvent.ACTION_MOVE:
        if (STATE==0&getX()-x<0){
          return mDrragHelper.shouldInterceptTouchEvent(event);
        }else if (STATE==1){
          return mDrragHelper.shouldInterceptTouchEvent(event);
        }
        break;
    }
    return false;
  }
//boolean control=true;//控制downx的初始化
  @Override
  public boolean onTouchEvent(MotionEvent event) {
    mDrragHelper.processTouchEvent(event);
    //if (control)
    float downX=0;
    if (event.getAction()==MotionEvent.ACTION_DOWN){
      downX=event.getRawX();
      if (STATE==1){
        //if (event.getRawX()>0&downX<leftWidth-rightViewWidth)
        //close();
        // Toast.makeText(this.getContext(), "leftWidth"+leftWidth+"rawx"+event.getRawX(), Toast.LENGTH_SHORT).show();
      }

    }
    if (event.getAction()==MotionEvent.ACTION_UP){
      //Toast.makeText(this.getContext(), "downx"+downX, Toast.LENGTH_SHORT).show();
      //点击删除//&downX>leftWidth-rightViewWidth&downX<leftWidth-rightViewWidth/2
     // Toast.makeText(this.getContext(), "删除1", Toast.LENGTH_SHORT).show();
      if (STATE==1&event.getRawX()>leftWidth-rightViewWidth&event.getRawX()<leftWidth-rightViewWidth/2){
        // Toast.makeText(this.getContext(), "删除2", Toast.LENGTH_SHORT).show();
        if (skipListener!=null){
         // Toast.makeText(this.getContext(), "删除3", Toast.LENGTH_SHORT).show();
          skipListener.onDelete();
        }
        // Toast.makeText(this.getContext(), "删除", Toast.LENGTH_SHORT).show();
      }
      //点击删除&downX>leftWidth-rightViewWidth/2&downX<leftWidth-rightViewWidth
      if (STATE==1&event.getRawX()>leftWidth-rightViewWidth/2&event.getRawX()<leftWidth){
        // Toast.makeText(this.getContext(), "修改", Toast.LENGTH_SHORT).show();
        if (skipListener!=null){
          skipListener.onDefine();
        }
      }
    }
    return true;
  }

mDrragHelper.shouldInterceptTouchEvent(event); 
mDrragHelper.processTouchEvent(event);

private ViewDragHelper.Callback mCallback=new ViewDragHelper.Callback() {
    @Override
    public boolean tryCaptureView(View child, int pointerId) {
      return child==leftView;
    }

    @Override
    public int clampViewPositionHorizontal(View child, int left, int dx) {
      if (left>=0)
        return 0;
      if (left<-rightViewWidth)
        return -rightViewWidth;

      return left;
    }

    @Override
    public void onViewPositionChanged(View changedView, int left, int top, int dx, int dy) {
      super.onViewPositionChanged(changedView, left, top, dx, dy);
      rightView.layout(leftWidth + left, 0, leftWidth + rightViewWidth, viewHeight);
      /* if (left<0&left>rightViewWidth/2){
      mDrragHelper.smoothSlideViewTo(leftView,left,0);
      mDrragHelper.smoothSlideViewTo(rightView,left,0);
      }*/

      /* if (left>=-(leftWidth+rightViewWidth)) {
        rightView.layout(leftWidth + left, 0, leftWidth + rightViewWidth, viewHeight);
      }
      if (left<-(leftWidth+rightViewWidth)){
        rightView.layout(leftWidth, 0, leftWidth + rightViewWidth, viewHeight);
      }*/

    }

    @Override
    public void onViewReleased(View releasedChild, float xvel, float yvel) {
      super.onViewReleased(releasedChild, xvel, yvel);
      Log.i("left xvel",xvel+"y"+yvel);
      if (xvel<0){
        open();/* mDrragHelper.smoothSlideViewTo(rightView,rightViewWidth/2,0);*/
      }else if (leftView.getLeft()<-rightViewWidth/2)
      {open();}else {
        // Log.i("left open","open");
        close();
      }
    }

    @Override
    public int getViewHorizontalDragRange(View child) {
      return -rightViewWidth;
    }

    @Override
    public void onEdgeTouched(int edgeFlags, int pointerId) {
      super.onEdgeTouched(edgeFlags, pointerId);
    }
  };

@Override
public void onEdgeTouched(int edgeFlags, int pointerId) {
  super.onEdgeTouched(edgeFlags, pointerId);
  Toast.makeText(getContext(), "edgeTouched", Toast.LENGTH_SHORT).show();
}

@Override
public void onEdgeDragStarted(int edgeFlags, int pointerId) {
  mDragHelper.captureChildView(mDragView2, pointerId);
}

public void open(){
    if (listener!=null){
      listener.onOpen(this);
    }
    if (mDrragHelper.smoothSlideViewTo(leftView,-rightViewWidth,0))
      ViewCompat.postInvalidateOnAnimation(SlideViewGroup.this);
    STATE=1;
  }

@Override
  public void computeScroll() {
    if (mDrragHelper.continueSettling(true)) {
      ViewCompat.postInvalidateOnAnimation(this);
    }
  }