I am having Bottom navigation menu, and each menu is having their separate viewpager with 3 tabs. Everything works fine in portrait mode but once rotate the device Viewpager is reset to that of first menu item.
To be specific I am on second bottom menu item and in second page of viewpager and i want to restore this state. Also keeping in mind the re usability of fragment. I am also using VIewModel, so it would be great if solution may take help of Viewmodel if possible.
You can add configChanges config to your activity specified in the android manifest file.
<activity name= ".YourActivity" android:configChanges="orientation|screenSize"/>
It'll handle the state for you automatically.
Edit: Read more about Restrict activity recreation at https://developer.android.com/guide/topics/resources/runtime-changes#restrict-activity