捕捉双击textview android

Question

我想双击我已经在下面的代码使用的textview

但它仍然不起作用:(

TextView txtOne;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    txtOne = (TextView) findViewById(R.id.txtOne);
    txtOne.setOnTouchListener(new View.OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            System.out.println("DRAG");
            return gestureDetector.onTouchEvent(event);

        }
    });
}

final GestureDetector gestureDetector = new GestureDetector(
        new GestureDetector.SimpleOnGestureListener() {

            @Override
            public boolean onDoubleTap(MotionEvent e) {
                System.out.println("Double Tap");
                return super.onDoubleTap(e);
            }

            @Override
            public boolean onSingleTapUp(MotionEvent e) {
                System.out.println("One Click");
                return super.onSingleTapUp(e);
            }


        });

仅拖动正在调用，但从未调用过“双击”和“一键单击”

Answer 1

请尝试以下步骤。

第1步

在您的活动中编写以下代码。

// initialize the Gesture Detector
gd = new GestureDetector(this,new OnGestureListener() {
    @Override
    public boolean onSingleTapUp(MotionEvent e) {
        // TODO Auto-generated method stub
        return false;
    }

    @Override
    public void onShowPress(MotionEvent e) {
        // TODO Auto-generated method stub

    }

    @Override
    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
            float distanceY) {
        // TODO Auto-generated method stub
        return false;
    }

    @Override
    public void onLongPress(MotionEvent e) {
        // TODO Auto-generated method stub

    }

    @Override
    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
            float velocityY) {
        // TODO Auto-generated method stub
        return false;
    }

    @Override
    public boolean onDown(MotionEvent e) {
        // TODO Auto-generated method stub
        return false;
    }
});

// set the on Double tap listener
gd.setOnDoubleTapListener(new OnDoubleTapListener() {
    @Override
    public boolean onDoubleTap(MotionEvent e) {
        Toast.makeText(SplashActivity.this,"Double Tap",Toast.LENGTH_LONG).show();
    return false;
    }

    @Override
    public boolean onDoubleTapEvent(MotionEvent e) {
        // if the second tap hadn't been released and it's being moved

        return false;
    }

    @Override
    public boolean onSingleTapConfirmed(MotionEvent e) {
        // TODO Auto-generated method stub
        return false;
    }

});

第2步

为活动编写以下代码。这gd将是GestureDetector对象。

txt.setOnTouchListener(new View.OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            // TODO Auto-generated method stub
            gd.onTouchEvent(event);
            return false;
        }
    });