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I'm trying to go back to my previous fragment

so I tried using onBackPressed() and here is my code 

@Override
public void onBackPressed()
{
    if(getFragmentManager().getBackStackEntryCount() > 0)
        getFragmentManager().popBackStack();
    else
        super.onBackPressed();
}

I'm having an error in super.onBackPressed() and it says that "Cannot resolve method 'onBackPressed' so I'm wondering why so I've searched on how to go to my previous fragment and found out that I should used addToBackStack()

if (fragment != null) {
                android.app.FragmentManager fragmentManager = ((Activity) context).getFragmentManager();
                android.app.FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
                fragmentTransaction.replace(R.id.frame_container_expandable, fragment);
                fragmentTransaction.commit();
            } else {
                Log.e(TAG, "Error in creating fragment");
            }

when I'm trying to put addToBackStack() is doesn't recognized it. Why is it like that? Is it because I'm using android.app.FragmentManager? or there are other solution for this?going back to the previous fragment? Thank you for the help

In my logcat it says Error:(88, 18) error: cannot find symbol method onBackPressed()

Kairi San
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2 Answers2

0

Yes you can use it.

getFragmentManager().popBackStack()

will not work if you do not addToBackStack

FragmentTransaction transaction = getFragmentManager().beginTransaction();
            transaction.replace(R.id.mainActivity_main_content, fragment).addToBackStack("Fragment");
            transaction.commit();

after you can catch click inside fragment

@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View view = inflater.inflate(R.layout.fragment_fragment_end, container, false);

        view.setOnKeyListener(new View.OnKeyListener() {
            @Override
            public boolean onKey(View v, int keyCode, KeyEvent event) {
                if (keyCode == KeyEvent.KEYCODE_BACK) {
                    getFragmentManager().popBackStack();
                    return true;
                }
                return false;
            }
        });
        return view;
    }
Emre Tekin
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Refer this documentation for proper back navigation from fragments.

http://developer.android.com/training/implementing-navigation/temporal.html

Murtuza Saifee
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  • 8