android - right - Detectar gesto de barrido en fragmento

gesturedetector android example

Question

Hola, he implementado un Fragment y quiero detectar un evento táctil en mi fragmento.

Pero no puedo detectar ese evento, de hecho, no se detecta ningún evento en absoluto. Funciona bien en Activity , pero no está trabajando en fragmentos.

Lo siguiente es mi código:

 public class Swipe_Fragment extends Fragment implements
GestureDetector.OnGestureListener, GestureDetector.OnDoubleTapListener {
private SimpleGestureFilter detector;
private LinearLayout swipLinear;
private static int DEFAULT = 50;
private int brightness;
private GestureDetectorCompat mDetector;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.swipe_screen, container,
false);
swipLinear = (LinearLayout) rootView.findViewById(R.id.swipLinear);
brightness = DEFAULT;
mDetector = new GestureDetectorCompat(getActivity(), this);
// Set the gesture detector as the double tap
// listener.
mDetector.setOnDoubleTapListener(this);
// Detect touched area
// detector = new SimpleGestureFilter(getActivity(), this);
return rootView;
}
@Override
public boolean onDoubleTap(MotionEvent arg0) {
Toast.makeText(getActivity(), "onDoubleTap", Toast.LENGTH_LONG).show();
return false;
}
@Override
public boolean onDoubleTapEvent(MotionEvent e) {
Toast.makeText(getActivity(), "onDoubleTapEvent", Toast.LENGTH_LONG).show();
return false;
}
@Override
public boolean onSingleTapConfirmed(MotionEvent e) {
Toast.makeText(getActivity(), "onSingleTapConfirmed", Toast.LENGTH_LONG).show();
return false;
}
@Override
public boolean onDown(MotionEvent e) {
Toast.makeText(getActivity(), "onDown", Toast.LENGTH_LONG).show();
return false;
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
Toast.makeText(getActivity(), "onFling", Toast.LENGTH_LONG).show();
return false;
}
@Override
public void onLongPress(MotionEvent e) {
Toast.makeText(getActivity(), "onLongPress", Toast.LENGTH_LONG).show();
}
@Override
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
float distanceY) {
Toast.makeText(getActivity(), "onScroll", Toast.LENGTH_LONG).show();
return false;
}
@Override
public void onShowPress(MotionEvent e) {
Toast.makeText(getActivity(), "onShowPress", Toast.LENGTH_LONG).show();
}
@Override
public boolean onSingleTapUp(MotionEvent e) {
Toast.makeText(getActivity(), "onSingleTapUp", Toast.LENGTH_LONG).show();
return false;
}
}

Answer 1

Finalmente obtuve una solución del código a continuación, que es de Android Fragment onCreateView con gestos .

 final GestureDetector gesture = new GestureDetector(getActivity(),
new GestureDetector.SimpleOnGestureListener() {
@Override
public boolean onDown(MotionEvent e) {
return true;
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
Log.i(Constants.APP_TAG, "onFling has been called!");
final int SWIPE_MIN_DISTANCE = 120;
final int SWIPE_MAX_OFF_PATH = 250;
final int SWIPE_THRESHOLD_VELOCITY = 200;
try {
if (Math.abs(e1.getY() - e2.getY()) > SWIPE_MAX_OFF_PATH)
return false;
if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE
&& Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
Log.i(Constants.APP_TAG, "Right to Left");
} else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE
&& Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
Log.i(Constants.APP_TAG, "Left to Right");
}
} catch (Exception e) {
// nothing
}
return super.onFling(e1, e2, velocityX, velocityY);
}
});
v.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
return gesture.onTouchEvent(event);
}
});

Esto va en el método onCreateView() del fragmento.