android处理双击事件(3)

        mContext = this; 
        leftUp = (Button)findViewById(R.id.leftUp); 
        rightUp = (Button)findViewById(R.id.rightUp); 
        leftDown = (Button)findViewById(R.id.leftDown); 
        rightDown = (Button)findViewById(R.id.rightDown); 
         
        leftUp.setOnTouchListener(listener); 
        rightUp.setOnTouchListener(listener); 
        leftDown.setOnTouchListener(listener); 
        rightDown.setOnTouchListener(listener); 
         
    } 
     
    private class ButtonOnTouchListener implements OnTouchListener{ 
 
        @Override 
        public boolean onTouch(View v, MotionEvent event) { 
            if(event.getAction()==MotionEvent.ACTION_DOWN){ 
                //如果第二次点击 距离第一次点击时间过长   那么将第二次点击看为第一次点击 
                if(firstClick!=0 && firstId!=0 && System.currentTimeMillis()-firstClick>300){ 
                    count = 0; 
                    firstId = 0; 
                } 
                count++; 
                if(count==1){ 
                    firstClick = System.currentTimeMillis(); 
                    //记录第一次点得按钮的id 
                    firstId = v.getId(); 
                }else if(count==2){ 
                    lastClick = System.currentTimeMillis();