Android的触摸事件确定时间 [英] Android Touch Event determining duration

问题描述

一个人如何检测的Andr​​oid 2.1触摸事件的持续时间？我想回应只有在地区一直pssed的发言权5秒$ P $？

How does one detect the duration of an Android 2.1 touch event? I would like to respond only if the region has been pressed for say 5 seconds?

推荐答案

您可以尝试混合<一href="http://developer.android.com/reference/android/view/MotionEvent.html"><$c$c>MotionEvent和 的Runnable /的 处理程序 以实现这一目标。

You could try mixing MotionEvent and Runnable/Handler to achieve this.

样品code：

private final Handler handler = new Handler();
private final Runnable runnable = new Runnable() {
    public void run() {
         checkGlobalVariable();
    }
};

// Other init stuff etc...

@Override
public void onTouchEvent(MotionEvent event) {
    if(event.getAction() == MotionEvent.ACTION_DOWN) {
        // Execute your Runnable after 5000 milliseconds = 5 seconds.
        handler.postDelayed(runnable, 5000);
        mBooleanIsPressed = true;
    }

    if(event.getAction() == MotionEvent.ACTION_UP) {
        if(mBooleanIsPressed) {
            mBooleanIsPressed = false;
            handler.removeCallbacks(runnable);
        }
    }
}

现在你只需要检查 mBooleanIs pressed 是真在 checkGlobalVariable（）的功能。

Now you only need to check if mBooleanIsPressed is true in the checkGlobalVariable() function.

我来到了，当我在写这是使用简单的时间戳有一个想法（如 System.currentTimeMillis的（））以确定的 MotionEvent.ACTION_DOWN 和 MotionEvent.ACTION_UP 。

One idea I came up with when I was writing this was to use simple timestamps (e.g. System.currentTimeMillis()) to determine the duration between MotionEvent.ACTION_DOWN and MotionEvent.ACTION_UP.

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