how to fix `Type mismatch: cannot convert from android.app.FragmentManager to android.support.v4.app.FragmentManager` error in android?

问题

I am getting the following error

Type mismatch: cannot convert from android.app.FragmentManager to android.support.v4.app.FragmentManager

for the following line

FragmentManager frgManager = getFragmentManager();
frgManager.beginTransaction().replace(R.id.content_frame, fragment).commit()

I have the following imports in my class

 import android.support.v4.app.Fragment;
 import android.support.v4.app.FragmentManager;
 import android.support.v4.app.FragmentTransaction;

How to fix the error?

回答1:

Replace getFragmentManager() with getSupportFragmentManager(), and make sure your class is a subclass of FragmentActivity.

来源：https://stackoverflow.com/questions/23212994/how-to-fix-type-mismatch-cannot-convert-from-android-app-fragmentmanager-to-an