redraw – Tarik Billa

Redraw a single row in a listview [duplicate]

August 4, 2023 by Tarik

As Romain Guy explained a while back during the Google I/O session, the most efficient way to only update one view in a list view is something like the following (this one update the whole View data): ListView list = getListView(); int start = list.getFirstVisiblePosition(); for(int i=start, j=list.getLastVisiblePosition();i<=j;i++) if(target==list.getItemAtPosition(i)){ View view = list.getChildAt(i-start); list.getAdapter().getView(i, view, … Read more

Difference between InvalidateRect and RedrawWindow

April 28, 2023 by Tarik

InvalidateRect does not immediately redraw the window. It simply “schedules” a future redraw for a specific rectangular area of the window. Using InvalidateRect you may schedule as many areas as you want, making them accumulate in some internal buffer. The actual redrawing for all accumulated scheduled areas will take place later, when the window has … Read more

Force RecyclerView to redraw its items

April 15, 2023 by Tarik

I found the answer! The correct way to do this is: recyclerView.setAdapter(null); recyclerView.setLayoutManager(null); recyclerView.setAdapter(myAdapter); recyclerView.setLayoutManager(myLayoutManager); myAdapter.notifyDataSetChanged(); After that, all the items are getting the new style!