Trying to Open fragment from another fragment in android studio 3.5.3

Question

I tried to open my second fragment from my 1st fragment but that giving me error. I tried as This answer and I google it everywhere done the same but not worked for me. I also tired with this android fragment transaction doc but didn't understand. Please can some one explain and solve this error in simpler way. Here is my code :

            FragmentManager fragmentManager=getActivity().getFragmentManager();
            FragmentTransaction fragmentTransaction=fragmentManager.beginTransaction();
            fragmentTransaction.replace(R.id.profile_f, new UProfileFragment()); //My second Fragment | & | home_layout is frame layout
            fragmentTransaction.addToBackStack(null);
            fragmentTransaction.commit();

and Here is my android studio screen error Screenshot :

Screenshot of exact error

Edit : Thank you for your answers this problem was due to androidx library and old android library's code mix up. i was using the old app compact library instead of androidx library. i changed the fragment and function to androidx and it did work. Note for new Android developer: please use one compact library's code (either androidx or android old)

Check the Fragment import. It must be different cause you an error. — Vatish Sharma, Dec 06 '19 at 07:17
use `getSupportFragmentManager()` instead of `getFragmentManager()` — Santanu Sur, Dec 06 '19 at 07:19
@SantanuSur and Mike Tried both of your code but showing incompatible types . :( — iamnabink, Dec 06 '19 at 07:33
Thank you everyone for your answers and suggestions this problem was due to androidx library and old android library mix up. i was using the old app compact library instead of androidx library. i changed the fragment and function to androidx and it did work. — iamnabink, Dec 06 '19 at 07:44

score 3 · Accepted Answer · answered Dec 06 '19 at 07:38

As already suggested, use getSupportFragmentManager() AND make sure that your UProfileFragment inherits from androidx.fragment.app.Fragment in case you use AndroidX or android.support.v4.app.Fragment in case you don't.

Your Activity should inherit from AppCompatActivity

score 2 · Answer 2 · answered Dec 06 '19 at 07:22

try this one code

FragmentManager fragmentManager = getActivity().getSupportFragmentManager();
        FragmentTransaction fragmentTransaction=fragmentManager.beginTransaction();
        fragmentTransaction.replace(R.id.home_layout, new ChatFragment(), "UProfileFragment"); //My second Fragment
        fragmentTransaction.addToBackStack(null);
        fragmentTransaction.commit();

score 0 · Answer 3 · answered Dec 06 '19 at 07:45

0

You forget to extend your UProfileFragment class with android.app.Fragment. Also, you should either use android.support.v4.app.Fragment or android.app.Fragment or androidx.fragment.app.Fragment if you are using AndroidX.

answered Dec 06 '19 at 07:45

Vatish Sharma

1,536
3
16
35

Trying to Open fragment from another fragment in android studio 3.5.3

3 Answers3