Java Android :Add array 15times in one second How?

Question

我想在一秒钟内添加数组 15 次。我使用过计时器、倒计时计时器、处理程序，但不适用于按钮 Action.Down 和 Action.Move。有什么帮助吗？

ArrayList<Integer> Xpos;
ArrayList<Integer> Ypos;
ArrayList<String> MarkerSelected;
private Handler handlerXYPos = new Handler();
Runnable runnableXYPos = null;



case MotionEvent.ACTION_DOWN:
handlerXYPos.post(runnableXYPos);   
break;

case MotionEvent.ACTION_UP:
handlerXYPos.removeCallbacks(runnableXYPos);
break;


//=== case drag
case MotionEvent.ACTION_MOVE:
handlerXYPos.post(runnableXYPos);
break;

此可运行程序执行 15 帧

runnableXYPos = new Runnable() {  

                @Override  
                public void run() 
                {  

                     Xpos.add(xP);
                     Ypos.add(yP);
                     MarkerSelected.add(MarkerName);
                     handlerXYPos.postDelayed(runnableXYPos, 66);  //convert 15 in milisec = 66


                }  
            };

当我按下按钮时，此代码可以工作，有时会添加正确数量的值，但是当我拖动手指时，它会添加额外的值。

Answer 1

当您拖动时，会发生以下情况

1) MotionEvent.ACTION_DOWN called once when you press to start drag

2) MotionEvent.ACTION_MOVE is called several times depending on your drag

3) MotionEvent.ACTION_UP: will get called once when you release to finish drag

所以不需要在MotionEvent.ACTION_MOVE里面写代码