Android的：如何知道按钮不放

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问题描述

我玩Android上的游戏，我有一个函数MoveCharacter（INT方向）时，按钮是pressed

I am playing with a game on Android, and I have a function MoveCharacter (int direction) that moves an animated sprite when buttons are pressed

例如，当用户presses了，我有这个code：

For example, when user presses up I have this code:

 mControls.UpButton.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                mLevel.mCharAnimation.FrameUp();
            }
        });

不过，我希望能够保持，只要用户保持按钮向下移动的字符。
出人意料的是，我还没有找到如何在Android中做到这一点。
是否有某种onButtonDownLister的？

However, I’d like to be able to keep moving the character as long as the user keeps the button down.Surprisingly, I have not found out how to do this in Android.Is there some kind of onButtonDownLister?

推荐答案

您需要使用OnTouchListener有对倒行为分开，向上和其他国家。

You need to use an OnTouchListener to have separate actions for down, up, and other states.

mControls.UpButton.setOnTouchListener(new OnTouchListener() {
    @Override
    public boolean onTouch(View v, MotionEvent event) {
        switch(event.getAction()) {
        case MotionEvent.ACTION_DOWN:
            // Do something
            return true;
        case MotionEvent.ACTION_UP:
            // No longer down
            return true;
        }
        return false;
    }
});

这篇关于Android的：如何知道按钮不放的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

onTouchListener