Attach a Fragment to the Activity

Question

I am trying to attach a Fragment to my MainActivity programmatically by using the following code:

@Override
protected void onCreate(Bundle savedInstanceSta         


        

Answer 1

Make a function like that

public void openFragment(Fragment fragment) {
        FragmentManager manager = getSupportFragmentManager();
        manager.beginTransaction().replace(R.id.fragmentContainer, fragment).commit();
    }

and call this in your onCreate Method

 openFragment(new yourFragment());

In your beginTransaction().replace method you have to pass the view from which you want to replace your fragment with

Answer 2

Replace your code:

FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
MainFragment fragment = new MainFragment();
fragmentTransaction.add(R.id.activity_main,fragment);
fragmentTransaction.commit();

By this:

Fragment fragment = new MainFragment();
getSupportFragmentManager.begintransaction.replace(R.id.container,fragment).commit;

Answer 3

first of all your take framelayout in activity_main.after that

fragmentTransaction.add(R.id.framelayout_id,fragment);

than its working fine