如何检测机器人双击？ [英] How to detect android double tap?

问题描述

如何检测双击android系统中？我实现OnDoubleTapListener，写这样的：

 公共布尔onDoubleTapEvent（MotionEvent E）{
        // TODO自动生成方法存根
        如果（e.getAction（）== 1）{
            Toast.makeText（getApplicationContext（），枪王，Toast.LENGTH_SHORT）.show（）;
        }
        返回true;
    }
 

但它不工作。什么是问题呢？

解决方案

 公共类GestureDoubleTap扩展GestureDetector.SimpleOnGestureListener {

    @覆盖
    公共布尔onDoubleTap（MotionEvent E）{
        //一些逻辑
        返回true;
    }

}
 

---

  GestureDoubleTap gestureDoubleTap =新GestureDoubleTap（）;
gestureDetector =新GestureDetector（本/ *中* /，gestureDoubleTap）;

view.setOnTouchListener（新View.OnTouchListener（）{
    @覆盖
    公共布尔onTouch（查看视图，MotionEvent motionEvent）{
        返回gestureDetector.onTouchEvent（motionEvent）;
    }

}）;
 

How to detect the double tap in android? I implement OnDoubleTapListener and wrote this:

public boolean onDoubleTapEvent(MotionEvent e) {
        // TODO Auto-generated method stub
        if(e.getAction() == 1){
            Toast.makeText(getApplicationContext(),"Double Tap", Toast.LENGTH_SHORT).show();
        }
        return true;
    }

But it is not working. What is the wrong with this?

解决方案

public class GestureDoubleTap extends GestureDetector.SimpleOnGestureListener {

    @Override
    public boolean onDoubleTap(MotionEvent e) {
        //some logic
        return true;
    }

}

---

GestureDoubleTap gestureDoubleTap = new GestureDoubleTap();
gestureDetector = new GestureDetector(this/* context */, gestureDoubleTap);

view.setOnTouchListener(new View.OnTouchListener() {
    @Override
    public boolean onTouch(View view, MotionEvent motionEvent) {
        return gestureDetector.onTouchEvent(motionEvent);
    }

});

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