How can I switch between two fragments, without recreating the fragments each time?

Question

I\'m working on an android application, that uses a navigation drawer to switch between two fragments. However, each time I switch, the fragment is completely recreated.

Answer 1

Just find the current fragment calling getFragmentById("id of your container") and then hide it and show needed fragment.

private void openFragment(Fragment fragment, String tag) {
        FragmentManager fragmentManager = getSupportFragmentManager();
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
        Fragment existingFragment = fragmentManager.findFragmentByTag(tag);
        if (existingFragment != null) {
            Fragment currentFragment = fragmentManager.findFragmentById(R.id.container);
            fragmentTransaction.hide(currentFragment);
            fragmentTransaction.show(existingFragment);
        }
        else {
            fragmentTransaction.add(R.id.container, fragment, tag);
        }
        fragmentTransaction.commit();
    }