Question

每当设置一个可移动的按钮时，它就变得不可点击了。我可以移动按钮但是通过按钮单击调用的功能不起作用。我在xml文件中设置了android：onClick =“playGame”，并在类中定义了playGame函数。但它不起作用。

如果我删除为可移动按钮编写的代码，它的工作正常。

为可移动按钮编写的代码是

@Override
    public boolean onTouch(View view, MotionEvent event) {
        float currX,currY;
        int action = event.getAction();
        switch (action ) {
            case MotionEvent.ACTION_DOWN: {
                mPrevX = event.getX();
                mPrevY = event.getY();
                break;
            }
            case MotionEvent.ACTION_MOVE:
            {
                currX = event.getRawX();
                currY = event.getRawY();
                ViewGroup.MarginLayoutParams marginParams = new ViewGroup.MarginLayoutParams(view.getLayoutParams());
                marginParams.setMargins((int)(currX - mPrevX), (int)(currY - mPrevY),0, 0);
                RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(marginParams);
                view.setLayoutParams(layoutParams);
                break;
            }
            case MotionEvent.ACTION_CANCEL:
                break;
            case MotionEvent.ACTION_UP:
                break;
        }
        return true;
    }

代码可以正常移动按钮，但按钮变得无法点击。

Answer 1

我认为您应该将移动与onTouchEvent()中的点击区分开来：

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

    private static final int MAX_CLICK_DURATION = 200;//!!
    private long startClickTime; //!!

    ... 
    switch (action ) {
        case MotionEvent.ACTION_DOWN: {
            startClickTime = Calendar.getInstance().getTimeInMillis();//!!

            ...
        }
        case MotionEvent.ACTION_MOVE:
        {
            ...
        }
        case MotionEvent.ACTION_CANCEL:
            break;
        case MotionEvent.ACTION_UP:
             long clickDuration = Calendar.getInstance().getTimeInMillis() - startClickTime;
            if(clickDuration < MAX_CLICK_DURATION) {
                //click event has occurred
            }
            break;
    }
    return true;
}

Answer 2

您可以使用手势检测器来分离逻辑。

GestureDetector gestureDetector = new GestureDetector(this,new GestureDetector.SimpleOnGestureListener() {

        @Override
        public boolean onSingleTapUp(MotionEvent event) {
            return true;
        }
    });

    your_button_view.setOnTouchListener(new View.OnTouchListener() {

        @Override
        public boolean onTouch(View arg0, MotionEvent arg1) {

            if (gestureDetector.onTouchEvent(arg1)) {
                // single tap
                return true;
            } else {
                // your code for move and drag
            }
            return false;
        }
    });

每当设置一个可移动的按钮时，它就不会在android中被点击

2 个答案: