FragmentManager and androidx FragmentManager

Question

I'm trying to setup in my app that is using androidX.

My problem is that when I try to work with PlaceAutocompleteFragment I get errors because it is a fragment from android.app.fragment and my parent fragment is an androidx fragment: androidx.fragment.app.Fragment so it uses a androidx.fragment.app.FragmentManagerinstead of a android.app.FragmentManager.

How can I work with "old" fragments in androidX?

Answer 1

1. Add this to dependencies: implementation 'androidx.appcompat:appcompat:1.0.2'.
2. Add this: import androidx.fragment.app.FragmentTransaction;.
3. Switch your activity extends from Activity to AppCompatActivity.
4. Change from getFragmentManager() to getSupportFragmentManager().

This will fix your issue.

Answer 2

If you are using the new libraries then only use those, don't combine them bacause yo can run into more problems. Now for your problem go to your fragment and just change the import form:

import android.app.fragment 

To:

import androidx.fragment.app.Fragment 

That should solve your problem.