Is it possible to programmatically change the Default.png launch image?
For example, could I replace it by an other image that fits better? My app has a tab bar and every tab has a very different screen, and I want to recover to that particular tab after a hard launch from scratch when the app got terminated in the background.
No.
The image Default.png is part of the bundle of your app, and you can only read this folder, you can’t modify it.
There is no API to specify a different launch image.