Type mismatch: cannot convert from MainFragment to Fragment error, cannotconvert

Type mismatch: cannot convert from MainFragment to Fragment error, cannotconvert

Source code:

1 FragmentTransaction mFragmentTranscation = getSupportFragmentManager (). beginTransaction (); 2 Fragment mMainFragment = new MainFragment (); // This row prompts an error of 3 mFragmentTranscation. replace (R. id. container, mMainFragment); 4 mFragmentTranscation. commit ();

 

Error message: the MainFragment (Fragment subclass) cannot be forcibly converted to Fragment

Solution:

In the original MainFragment

Import android. app. Fragment;

Changed:

Import android. support. v4.app. Fragment;