每当用户的手指没有触摸屏幕时，我想让我的游戏暂停

Question

正如我所说，我想让我的游戏只在用户触摸屏幕时运行。到目前为止，我有：

public boolean onTouchEvent(MotionEvent e) {


    // Get finger's X and Y position
    float x = e.getX();
    float y = e.getY();

    if(x > startPlaying.left || x < startPlaying.right && y < startPlaying.bottom && y > startPlaying.top) {

        Playing = true;         
    }

    if (Playing == true) {


                switch (e.getAction()) {
                case MotionEvent.ACTION_MOVE:
                    playerX = x;
                    playerY = y;
                case MotionEvent.ACTION_UP:
                    Playing = false;
                }

            }

    return true;
}

我认为这两个案例不能一起工作的问题但是我不太确定，我是java的新手。有任何建议或修正吗？

@Override protected void onDraw(Canvas canvas) {

    if (Playing == true) {          
        rowSpeed = -2;
        rowSpeed -= 0.0002f;
        scoreCounter += 0.005;

    } else {
        rowSpeed = 0;
        rowSpeed -= 0f;
        scoreCounter += 0;
    }

Answer 1

执行switch语句的常规方法是

switch (e.getAction()) {
            case MotionEvent.ACTION_MOVE:
                playerX = x;
                playerY = y;
                break;                      // any reason you do not want this?
            case MotionEvent.ACTION_UP:
                Playing = false;
            }