Lazy loading in HorizontalScrollView to prevent Out of Memory issue

I want to add lazy loading feature to HorizontalScrollView, It has linearlayout as a child and i am addding to linearlayout, I am interested in listening to the event when the child view is out of the visibility area, I see in linearlayout implementation it does not call either dispatchViewVisibility or onDraw on child view , why i want that because bitmap attached to the child view can be recycled and create bitmap again when child view is visible (well that is a separate part ,How can i create that bitmap very fast, I am planning to use opengl for that) but the question is how can make such custom view. I can not use gallery view because it does not solve my purpose I saw that viewgroup has feature of dispatchingViewVisibility and dispatchOnDraw but not sur开发者_如何学JAVAe how to use that with HorizontalScrollView.? All i am doing to prevent Out of Memory issue Any suggestion and help would be appreciated thanks

Do not use HorizontalScrollView. Instead, use the ViewPager component that was added to the Android Compatibility Library, as it is designed for this sort of scenario. Here is a blog post that explains a bit more.