在ViewPager中的onTouchListener

Question

我有一個ImageView與onTouchListener在ViewPager的內部。當我嘗試更改ViewPager的頁面時，當然ImageView的聽衆會關閉。有沒有辦法阻止它。我想我需要以某種方式識別輕掃。

這是我的代碼的摘錄：

public class ServerDetailFragment extends Fragment implements SimpleGestureListener { 
GestureDetector detector; 
SimpleOnGestureListener gestures = new SimpleOnGestureListener() { 
    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { 
     Log.e("TAG", "onFling"); 
     return true; 
    }; 
}; 
.... 


@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState);  
    detector = new GestureDetector(ServerDetailFragment.this.getActivity(), gestures); 

} 

.... 

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
    rootView = inflater.inflate(R.layout.fragment_server_detail, container, false); 
    MyPagerAdapter adapter = new MyPagerAdapter(); 
    myPager = (ViewPager) rootView.findViewById(R.id.detail_pager); 
    myPager.setAdapter(adapter); 
    myPager.setCurrentItem(0); 
    myPager.setOffscreenPageLimit(4); 

    ViewTreeObserver vto = myPager.getViewTreeObserver(); 
    vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() { 
     @Override 
     public void onGlobalLayout() { 
      pagerGraph = (ImageView) myPager.findViewWithTag(myPager.getCurrentItem()).findViewById(R.id.pagerView); 
      pagerPb = (ProgressBar) myPager.findViewWithTag(myPager.getCurrentItem()).findViewById(R.id.pagerPb); 
      if (init) { 

       plotFakeData(); 

       // Following problematic part is also in ViewPager's onPageChangeListener 

         pagerGraph.setOnTouchListener(new OnTouchListener() { 
        @Override 
        public boolean onTouch(View v, MotionEvent event) { 
         if (detector.onTouchEvent(event)) { 

          // some more code here 

         } 
         return false; 
        } 

       }); 

       // myPager.setCurrentItem(0); 
      } 
      init = false; 
     } 
    }); 

Answer 1

我會像這樣的東西去：

public class OnSwipeTouchListener implements OnTouchListener { 

private final GestureDetector gestureDetector = new GestureDetector(new GestureListener()); 

public boolean onTouch(final View v, final MotionEvent event) { 
    return gestureDetector.onTouchEvent(event); 
} 

private final class GestureListener extends SimpleOnGestureListener { 

    private static final int SWIPE_THRESHOLD = 100; 
    private static final int SWIPE_VELOCITY_THRESHOLD = 100; 

    @Override 
    public boolean onDown(MotionEvent e) { 
     return true; 
    } 
    @Override 
    public boolean onSingleTapConfirmed(MotionEvent e) { 
     onTouch(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) { 
        } else { 
        } 
       } 
      } else { 
       // onTouch(e); 
      } 
     } catch (Exception exception) { 
      exception.printStackTrace(); 
     } 
     return result; 
    } 
} 
public void onTouch(MotionEvent e) { 
} 
} 

，並呼籲他們這樣說：

pagerGraph.setOnTouchListener(new OnSwipeTouchListener() {   
public void onTouch(MotionEvent event) { 
    // your code here 
});