问题
I have a custom ViewGroup and would like to add scrolling ability to it.
Is it possible to use a Scroller object and link it up with view group?
I have read somewhere that Scroller does not do any actual scrolling. That means it must be delegating the scrolling responsibility back to ViewGroup.
thanks
回答1:
The ScrollView object is what allows for scrolling. Basically, most Views are able to be scrolled, but they have no way of propagating touch events to the View class. A ScrollView handles this for the user, so should be wrapped around a View whenever you would like to enable Scrolling for a that view.
Remember that a ScrollView can only have one child view, so if you need have multiple views in the same scrolling layout, you'll need to have them all inside one LinearLayout (or RelativeLayout, or whatever you decide).
来源：https://stackoverflow.com/questions/8796960/how-to-use-scroller-in-viewgroup-android