Is that possible to check was onCreate called because of orientation change?

Question

I need to act differently in onStart() method depending on how onCreate() was called in result of orientation change or not. Is that

Answer 1

Try getChangingConfigurations. Use this to discover when the activity is being destroyed because of an orientation change, set a flag, and check that flag when onCreate is called.

This has the advantage of letting you know why the activity is restarting without overriding orientation configuration in the manifest.