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I have an app with few fragments. There are one fragment, which is host for ViewPager 2, and there are 4 fragments, that are "swipeable". There's one more fragment, which is not present in ViewPager. It is accessible via NavigationComponents.

These fragments, that are using ViewPager, has it owns toolbar. I'd like to send fragment's TAG to the host fragment, so it will know, where to redirect ViewPager later on. After receiving the TAG, it should move to fragment, which is accessible only via Navigation Components.

The problem is, I'm not sure how I should approach it. Should I create a ViewModel for host fragment, and there should I set LiveData with TAG, or should I make an Singleton object inside the host fragment, send the TAG from fragment inside of ViewPager, and then, trigger Navigation Components?

I need to pass the TAG of the fragment inside of ViewPager, because I want program to know, where it should back after some stuff done in fragment from Navigation Components.

SlipperyBarrel
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  • I would use single viewmodel for the ViewPager and swipable fragments, similar to this: https://stackoverflow.com/questions/53817046/how-to-scope-a-view-model-to-a-parent-fragment – Stachu Feb 16 '23 at 21:19

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