Android的ACTION_UP甚至从来没有所谓的 [英] Android ACTION_UP even never called

问题描述

我试图做一个小机器人跳和跑游戏，但我的问题是，我不能配置事件ACTION_UP权利。在这里，我的code：

I'm trying to make a small android Jump and Run game but my problem is that i can't configure the event ACTION_UP right. Here my Code:

public boolean onTouchEvent(MotionEvent event) {
    switch(event.getAction()){
    case MotionEvent.ACTION_DOWN:
        Log.d("OTE", "down"); 
        touchDownTrue = true;
        break;
    case MotionEvent.ACTION_UP:
        Log.d("OTE", "UP"); 
        touchDownTrue = false;
        break;
    }
}

的情况下MotionEvent.ACTION_UP不会被调用，我不知道为什么，如果我使用ACTION_CANCEL同样的情况。

the case MotionEvent.ACTION_UP is never called and i don't know why, the same happens if i use ACTION_CANCEL

推荐答案

我插入后返回super.onTouchEvent（事件）;在方法结束（onTouchEvent必须返回值）的code为我工作，当我把它放在一个空白的主要活动。

After I insert return super.onTouchEvent(event); at the end of the method (onTouchEvent must return a value) your code works for me, when I put it in a blank main activity.

您或许应该返回真，而不是在这些情况下断裂了，因为你是响应事件。

You should probably return true instead of breaking in those cases because you are responding to the event.

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