Fragment not showing when add() method is called

Question

here is the declarations:

FragmentManager fr = getFragmentManager();
FragmentTransaction ft = fr.beginTransaction();
Fragment myFragment = new defaultFragment();
ft.add(R.id.fragment, myFragment);
ft.commit();

and here is the onClick() method:

public void startFragment(View v){
    newFragment = new nextFragment();
    execute();
}

execute method :

public void execute() {
    FragmentTransaction transaction = getFragmentManager().beginTransaction();
    transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
    transaction.add(R.id.fragment, newFragment);
    transaction.addToBackStack(null);
    transaction.commit();
}

i cant the problem but when i click the button that triggers the startFragment(View v) method, nothing happens, the fragment is not replaced by the fragment that i want to add on the stack. I think the problem has something to do with this line transaction.add(R.id.fragment, newFragment); help please thanks :)

Answer 1

Try adding the fragment to FrameLayout instead. I was not able to add it to LinearLayout, but I changed it to FrameLayout and it worked.