Slice transaction does not work when using AppCompatActivity or FragmentActivity

Question

I have a typical application. The activity that FrameLayout has in this layout, I want to switch between fragments. This is usually and easily done with:

getFragmentManager().beginTransaction()
                .replace(R.id.ac_container, new FrOverview())
                .addToBackStack(null)
                .commit();

The problem is that even if I use .addToBackStack(null)(And I know that it was added because the number of stack is increasing), when I click the "I" button, I exit the application. I tried a lot of different code things and checked most of the threads here in Stackoverflow, but I can't get it to work with the code (method calls, etc.).

But! I can make it work by changing the extended class of my activity class. If my class extends Activity, it works great. But if I use AppCompatActivity(which, in turn, extends FragmentActivity), then it has bad behavior, as explained earlier.

It seems that this should be a mistake in the part of androids, I am not doing anything wrong with my knowledge.

Does anyone have any suggestions on how to solve this? that is, get back the functionality and save the ActionBar!

Answer 1

AppCompatActivityuses SupportFragmentManager, you need to switch to SupportFragment and SupportFragmentManager