在ScrollView（ANDROID）内的无限RecycleView中保留滚动位置

Question

I have RecycleView inside the ScrollView that can infinite scroll and always load new data with paging. Is there any way to save my scroll position (RecycleView and ScrollView) when Activity get onPause(), and restore when onResume(). Just like Instagram, Facebook, etc. when we click for detail posting and back to the timeline exactly in the same position when we left before enter code here .

Answer 1

My advice : use RecycleView inside another RecycleView. So for RecycleView you can use this strategy : 1) Save last visible item position 2) Do some manipulations 3) Restore your position

int lastViewedPosition = ((LinearLayoutManager)rv.getLayoutManager()).findLastVisibleItemPosition();

//some manipulations 

rv.getLayoutManager().scrollToPosition(lastViewedPosition + data.size() - 1);