Wykryj gest machnięcia fragmentem

Question

Witam Zaimplementowałem Fragment i chcę wykryć zdarzenie dotykowe na moim fragmencie.

Ale nie jestem w stanie wykryć tego zdarzenia, w rzeczywistości żadne zdarzenie nie jest wykrywane w ogóle. Działa dobrze w Activity, ale nie działa na fragmentach.

Po to mój kod:

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

Wreszcie mam rozwiązanie z poniżej kod, który jest od Android Fragment onCreateView with Gestures.

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); 
    } 
}); 

To dotyczy metody fragmentu w postaci onCreateView().