android: ViewPager and HorizontalScrollVIew

Question

I have a HorizontalScrollView inside my ViewPager. I set requestDisallowInterceptTouchEvent(true); for the HorizontalScrollView but the ViewPager is still sometimes intercepting touch events. Is there another command I can use to prevent a View's parent and ancestors from intercepting touch events?

note: the HorizontalScrollView only occupies half the screen.

Answer 1

I had the same problem. My solution was:

1. Make a subclass of ViewPager and add a property called childId.
2. Create a setter for the childId property and set the id of the HorizontalScrollView.
3. Override onInterceptTouchEvent() in the subclass of ViewPager and if the childId property is more than 0 get that child and if the event is in HorizontalScrollView area return false.

Code

public class CustomViewPager extends ViewPager {      private int childId;          public CustomViewPager(Context context, AttributeSet attrs) {         super(context, attrs);     }         @Override     public boolean onInterceptTouchEvent(MotionEvent event) {         if (childId > 0) {             View scroll = findViewById(childId);             if (scroll != null) {                 Rect rect = new Rect();                 scroll.getHitRect(rect);                 if (rect.contains((int) event.getX(), (int) event.getY())) {                     return false;                 }             }         }         return super.onInterceptTouchEvent(event);     }      public void setChildId(int id) {         this.childId = id;     } } 

In onCreate() method

viewPager.setChildId(R.id.horizontalScrollViewId); adapter = new ViewPagerAdapter(this); viewPager.setAdapter(adapter); 

Hope this help