在ListView中不調用手勢OnFling

我需要一些幫助來處理列表視圖上的手勢。我有，我希望能夠檢測到下面的佈局左側和右側刷卡的videoview：在ListView中不調用手勢OnFling

Link to a drawing of the current gesture and what is expected

，我用來捕捉事件的onFling方法不叫

public class OnSwipeTouchListener implements OnTouchListener { 

private final GestureDetector gestureDetector; 
private FeedAdapter callback; 

public OnSwipeTouchListener(Context context, FeedAdapter callback) { 
    gestureDetector = new GestureDetector(context, new GestureListener()); 
    this.callback = callback; 
} 
@Override 
public boolean onTouch(final View view, final MotionEvent motionEvent) { 
    return gestureDetector.onTouchEvent(motionEvent); 
} 

private final class GestureListener extends SimpleOnGestureListener { 

    private static final int SWIPE_THRESHOLD = 30; 

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


    public boolean onSingleTapUp(MotionEvent e) { 
     Log.v("Tom", "tap"); 
     triggerTouch(); 
     return true; 
    } 
    @Override 
    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, 
      float velocityY) { 
     boolean result = false; 
     Log.v("Swipe","is called"); // this is not called when swipe is not perfectly straight 
     try { 
      float diffX = e2.getX() - e1.getX(); 
      if (Math.abs(diffX) > SWIPE_THRESHOLD) { 
       if (diffX > 0) { 
        onSwipeRight(); 
       } else { 
        onSwipeLeft(); 
       } 
      } 
     } catch (Exception exception) { 
      exception.printStackTrace(); 
     } 
     return result; 
    } 
} 

public void onSwipeRight() { 
} 

public void onSwipeLeft() { 
} 

public void triggerTouch() { 
} 

public void onSwipeBottom() { 
} 
}

那麼如何讓用戶在略微偏離水平位置時調用onFling？

謝謝你的幫助！

湯米

來源

2013-11-26 Tommy Soh

也許你應該如下修改代碼：一定要調用父類實現

@Override 
public boolean onTouch(final View view, final MotionEvent motionEvent) { 
    this.gestureDetector.onTouchEvent(motionEvent); 
    return super.onTouchEvent(event);

}

希望能幫助你。

來源

2013-11-26 07:17:58 lgw150

這是行不通的，因爲世界上沒有super.onTouchEvent。我相信你的意思是 return super.onTouch（view，motionEvent）; 但這也無法正常工作onTouchLisetener的onTouch是抽象的 http://developer.android.com/reference/android/view/View.OnTouchListener.html –

所以，只需添加這一點，如果event.getAction是MotionEvent.Action_move停止列表視圖滾動

// Cancel listview's touch 
MotionEvent cancelEvent = MotionEvent.obtain(motionEvent); 
cancelEvent.setAction(MotionEvent.ACTION_CANCEL | 
(motionEvent.getActionIndex() << MotionEvent.ACTION_POINTER_INDEX_SHIFT)); 
mView.onTouchEvent(cancelEvent); 
cancelEvent.recycle();

來源

2013-11-26 23:07:10

在ListView中不調用手勢OnFling

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