Question

我正在为Android制作一个音乐播放器，但我最近用滑动手势更新了它，但事情是只有一个手势（底部滑动正在工作）我检查了滑动手势类，似乎没有任何错误

这是我的实施代码

LinearLayout LL=(LinearLayout) findViewById(R.id.LL);
LL.setOnTouchListener(new OnSwipeTouchListener() {
            public void onSwipeTop() {
                mp.stop();
                mp.release();
            }
            public void onSwipeRight() {
                mp.stop();
                mp.release();

            }
            public void onSwipeLeft() {
                mp.stop();
                mp.release();

            }
            public void onSwipeBottom() {
                mp.stop();
                mp.release();
            }
        });

这是我的刷卡课程

public class OnSwipeTouchListener  extends Activity implements OnTouchListener{

    private final GestureDetector gestureDetector = new GestureDetector(new GestureListener());

    public boolean onTouch(final View view, final MotionEvent motionEvent) {
       // super.onTouch(view, motionEvent);
        return gestureDetector.onTouchEvent(motionEvent);
    }

    private final class GestureListener extends SimpleOnGestureListener {

        private static final int SWIPE_THRESHOLD = 70;
        private static final int SWIPE_VELOCITY_THRESHOLD = 60;

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

        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
            boolean result = false;
            try {
                float diffY = e2.getY() - e1.getY();
                float diffX = e2.getX() - e1.getX();
                if (Math.abs(diffX) > Math.abs(diffY))
                {
                    if (Math.abs(diffX) > SWIPE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) 
                    {
                        if (diffX > 0)
                        {
                            onSwipeRight();
                        } 
                        else 
                        {
                            onSwipeLeft();
                        }
                    }
                }
                else 
                {
                    if (Math.abs(diffY) > SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD)
                    {
                        if (diffY > 0) 
                        {
                            onSwipeBottom();
                        } else {
                            onSwipeTop();
                        }
                    }
                }
            } catch (Exception exception) {
                exception.printStackTrace();
            }
            return result;
        }
    }

    public void onSwipeRight() {
    }

    public void onSwipeLeft() {
    }

    public void onSwipeTop() {
    }

    public void onSwipeBottom() {
    }
}

Answer 1

似乎代码没有问题....但问题出在视图，xml文件..

线性布局没有填满整个空间......所以唯一正在工作的滑动是底部滑动......而且也只是在顶部区域。（存在线性布局的地方）.....

Android SwipeGesture只在一个方向工作，我不知道为什么？

1 个答案: