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，但问题是只有一个手势（底部滑动有效）我检查了滑动手势类，似乎没有任何问题
这是我的实现代码
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
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() {
}
}