我正在尝试在我的 RelativeLayout 中实现向左或向右滑动。我写了一些代码，但无法向左或向右滑动。我正在使用 GestureDetector 这是我的来源
private GestureDetector gesturedetector = null;
private RelativeLayout swipelayout;
@SuppressLint("UseValueOf")
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.strada_menu_result_loadmore,
container, false);
swipelayout = (RelativeLayout) rootView.findViewById(R.id.swipelayout);
gesturedetector = new GestureDetector(new MyGestureListener());
swipelayout.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
gesturedetector.onTouchEvent(event);
return true;
}
});
return rootView;
}
public boolean dispatchTouchEvent(MotionEvent ev){
return gesturedetector.onTouchEvent(ev);
}
class MyGestureListener extends GestureDetector.SimpleOnGestureListener {
private static final int SWIPE_MIN_DISTANCE = 150;
private static final int SWIPE_MAX_OFF_PATH = 100;
private static final int SWIPE_THRESHOLD_VELOCITY = 100;
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
float dX = e2.getX() - e1.getX();
float dY = e1.getY() - e2.getY();
if (Math.abs(dY) >= SWIPE_THRESHOLD_VELOCITY
&& Math.abs(velocityX) >= SWIPE_THRESHOLD_VELOCITY &&
Math.abs(dX) >= SWIPE_MIN_DISTANCE) {
if (dX > 0) {
Toast.makeText(getActivity(), "Right Swipe",
Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(getActivity(), "Left Swipe",
Toast.LENGTH_SHORT).show();
}
return true;
}
return false;
}
}
我做错了什么？如果有人知道解决方案请帮助我 谢谢
最佳答案
你只需要一个 OnTouchListener，这应该是简单的答案。看一看。 我在一些工作项目中使用了这段代码，所以一切都应该工作正常。但是，如果缺少某些内容并且不起作用，请告诉我。
yourRelativeLayout.setOnTouchListener(new OnTouchListener() {
int downX, upX;
@Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
downX = (int) event.getX();
Log.i("event.getX()", " downX " + downX);
return true;
}
else if (event.getAction() == MotionEvent.ACTION_UP) {
upX = (int) event.getX();
Log.i("event.getX()", " upX " + upX);
if (upX - downX > 100) {
// swipe right
}
else if (downX - upX > -100) {
// swipe left
}
return true;
}
return false;
}
});
关于Android在RelativeLayout中左右滑动，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/24827675/