Fragment pressing back button

Question

I am now having an activity containing fragments

[1] , [2] , [3] , [4]

If pressing buttons , [3] , it can be redirected to [4]

I would like to imp

Answer 1

i use a methode to change fragments it has thw following code

 getSupportFragmentManager().beginTransaction().setCustomAnimations(R.anim.enter, R.anim.exit, R.anim.pop_enter, R.anim.pop_exit).replace(R.id.content_frame, mContent, mContent.getClass().getSimpleName()).addToBackStack(null)
                .commit();

and for the back button this .

@Override
    public void onBackPressed() {
        // note: you can also use 'getSupportFragmentManager()'
        FragmentManager mgr = getSupportFragmentManager();
        if (mgr.getBackStackEntryCount() == 1) {
            // No backstack to pop, so calling super
            finish();
        } else {
            mgr.popBackStack();
        }
    }

the important thing to note is i use 1 for checking getBackStackEntryCount this is because if you dont use it and use 0 user sees nothing for the last back button.