My universal iOS app dies upon receiving memory warnings. Actually it just do the default behaviour - current visible view controller releases its views and I see just blank underneath app window instead. So the question is - what techniques should I adopt to prevent this default behaviour?
And what should I release if I don't have such resources as cached data or images in memory? Other's view controllers' views?
Ok, that was because I didn't set up root controller for navigation controller properly. Actually, there was view inside another view of root view controller. Silly mistake...