How to get back to previous fragment in Android

Question

I want to move back to my previous fragment when I click on the back button. What I am doing is not working.

The code for fragment replacement:

Fragment fragment=new MyFragment();
FragmentManager fragmentManager = getActivity().getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager
    .beginTransaction();
fragmentTransaction.setCustomAnimations(R.anim.slide_in,R.anim.slide_out);
fragmentTransaction.replace(R.id.container_body, fragment);
fragmentTransaction.commit();

The code for catch hit of Back button:

@Override
public void onResume() {
    super.onResume();
    getActivity().invalidateOptionsMenu();
    getView().setFocusableInTouchMode(true);
    getView().requestFocus();
    getView().setOnKeyListener(new View.OnKeyListener() {
        @Override
        public boolean onKey(View v, int keyCode, KeyEvent event) {
            if (event.getAction() == KeyEvent.ACTION_UP && keyCode == KeyEvent.KEYCODE_BACK) {
                getActivity().finish();
                getActivity().overridePendingTransition(R.anim.slide_enter, R.anim.slide_exit);
                return true;
            }
            return false;
        }
    });

I have also tried

getActivity().getSupportFragmentManager().popBackStack();

fragmentTransaction.addtobackstack(fragment.getClass().getSimpleName()); — Vishal Thakkar, Sep 03 '16 at 12:05
see this link http://stackoverflow.com/questions/18305945/how-to-resume-fragment-from-backstack-if-exists — Vishal Thakkar, Sep 03 '16 at 12:10
use addToBackStack(null) back handeling back press event in fragment — Manish, Sep 03 '16 at 12:11
Fragment fragment=new MyFragment(); FragmentManager fragmentManager = getActivity().getSupportFragmentManager(); FragmentTransaction fragmentTransaction = fragmentManager .beginTransaction(); fragmentTransaction.setCustomAnimations(R.anim.slide_in,R.anim.slide_out); fragmentTransaction.replace(R.id.container_body, fragment); backStateName = fragment.getClass().getName(); fragmentTransaction.addToBackStack(backStateName); fragmentTransaction.commit(); — Shivangi, Sep 03 '16 at 12:16
I simply want back button when click move to previous fragment — Shivangi, Sep 03 '16 at 12:19
because you want to back that fragment. if you replace fragment then previous fragment instance not stay more so if you want it back then you have to get it using tag. But in your case i think you have to use add fragment and use add tobackstack hide method. — Vishal Thakkar, Sep 03 '16 at 12:41
Hello,Actually what i am having is one fragment class having view pager,recycler view and when click on back button,this activity do not gone — Shivangi, Sep 05 '16 at 04:04

score 0 · Answer 1 · answered Sep 03 '16 at 12:14

0

Change like this this mat help

Fragment fragment=new MyFragment();
               FragmentManager fragmentManager = getActivity().getSupportFragmentManager();
               FragmentTransaction fragmentTransaction = fragmentManager
                        .beginTransaction();
                fragmentTransaction.setCustomAnimations(R.anim.slide_in,R.anim.slide_out);
                fragmentTransaction.replace(R.id.container_body, fragment).addToBackStack(null);
                fragmentTransaction.commit();

Let me know if any error

answered Sep 03 '16 at 12:14

Manish

234
2
13

.addToBackStack(null); add in each fragment you want to listen back button controle – Manish Sep 03 '16 at 12:28
Nothing happend – Shivangi Sep 03 '16 at 12:33
Hey its working in one fragment but not when i replace fragment from recycleadapter so can u tell me solution for this also. – Shivangi Sep 03 '16 at 12:34

score 0 · Answer 2 · answered Sep 03 '16 at 12:45

you can do like below.

   DetailsFragment detailsFragment = new DetailsFragment();
            Bundle bundle = new Bundle();
            bundle.putString("ID", Id);
                    detailsFragment.setArguments(bundle);

            FragmentTransaction transaction = getFragmentManager().beginTransaction();
            transaction.add(R.id.detail_container, detailsFragment);
            transaction.addToBackStack(this.getClass().getSimpleName());
            transaction.hide(DetailsFragment.this);
            transaction.commit();

How to get back to previous fragment in Android

2 Answers2