使用GestureDetector双击

Question

我如何修改下面的代码，以便当用户在屏幕上双击时，应用程序/拼图重新启动？任何帮助都是非常感谢的。

        return true;
    }

    public boolean onTouchEvent( MotionEvent event ) {
        detector.onTouchEvent( event );
        return true;
    }

    private class DoubleTapHandler
            extends GestureDetector.SimpleOnGestureListener {
        public boolean onDoubleTapEvent( MotionEvent event ) {
            int touchY = ( int ) event.getRawY( );
            // y coordinate of the touch within puzzleView is
            // touchY - actionBarHeight - statusBarHeight
            int index = puzzleView.indexOfTextView( touchY
                    - actionBarHeight - statusBarHeight );
            if( puzzleView.getTextViewText( index )
                    .equals( puzzle.wordToChange( ) ) )
                puzzleView.setTextViewText( index, puzzle.replacementWord( ) );
            return  true;
        }
    }
}

Answer 1

这不是一个完美的解决方案，但确实有效:)

private fun setDoubleClick() {
    var numOfClicks = 0
    [View].setOnClickListener {
        numOfClicks++
        if (numOfClicks == 2) {
            //onDoubleClick
            numOfClicks = 0
        } else {
            Handler().postDelayed({ numOfClicks = 0 }, 2000/*Set this according to desired doubleclick speed*/ )
        }
    }
}

Answer 2

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


    //doubletap method


    @Override
    public boolean onDoubleTap(MotionEvent e) {

        //put what do you want when double tap
         restartApplication();
        return true;
    }

    @Override
    public void onLongPress(MotionEvent e) {
        super.onLongPress(e);

    }

    @Override
    public boolean onDoubleTapEvent(MotionEvent e) {
        return true;
    }

    @Override
    public boolean onDown(MotionEvent e) {
        return true;
    }


});

现在将探测器连接到您的视图触摸监听器

yourView.setOnTouchListener(new View.OnTouchListener()

{
    @Override
    public boolean onTouch (View v, MotionEvent event){

    return gestureDetector.onTouchEvent(event);
}
});

下面是重新启动函数

void restartApplication(){
    Intent i = getBaseContext().getPackageManager()
            .getLaunchIntentForPackage( getBaseContext().getPackageName() );
    i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_CLEAR_TASK);
    startActivity(i);
}

参考https://stackoverflow.com/a/39816509/12676247