Error: required: android:support.v4.FragmentManager, found: android.app.FragmentManager

Question

 FragmentManager manager = getFragmentManager();

It is giving the error

required : android:support.v4.FragmentManager
foun

Answer 1

This solved the problem for me for creating fragment with viewpager.

Make your activity extend AppCompatActivity(), then use supportFragmentManager.

abstract class YourActivity() : AppCompatActivity() { /*your Activity Code*/ }

Then, when creating your viewpager with fragment:

 val adapter = ViewPagerAdapter(supportFragmentManager)
 viewPager.adapter = adapter
 sliding_tabs.setupWithViewPager(viewPager)

Answer 2

add these two import

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

for example

   FragmentA fragmentA = new FragmentA();
    FragmentManager fragmentManager =getSupportFragmentManager();
    FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
    fragmentTransaction.add(R.id.id_parent_fragment,fragmentA);
    fragmentTransaction.commit();

consider FragementA is the fragment that you want to insert in the activity which in this case is the container in the activity id_parent_fragment

Answer 3

Use getSupportFragmentManager(), or change the import for FragmentManager from what you have (android.support.v4.app.FragmentManager) to android.app.FragmentManager.

You need to consistently use either the native classes or the backport. You cannot mix and match.

Answer 4

change the import of Fragment Activity below

 import android.support.app.FragmentActivity;

to

 import android.support.v4.app.FragmentActivity;