Finishing current activity from a fragment

Question

I have a fragment in an activity that I am using as a navigation drawer   It contains buttons that when clicked start new activities  startActivity from a fragment simply calls startActivity on the current activity    For the life of me I can t seem to figure out how I would finish the current activity after starting a new one   I am looking to achieve something like this in the fragment    Override public void onClick View view           TODO Auto-generated method stub     if  view    mButtonShows            Intent intent   new Intent view getContext    MyNewActivity class           intent addFlags Intent FLAG ACTIVITY CLEAR TOP           startActivity intent           finish               But it seems Fragment class does not implement finish    like it implements startActivity         I would like the activity backstack cleared when they launch the 2nd activity   so pressing back from the new activity would technically drop them back to the launcher

User · Answer

You should use getActivity   method in order to finish the activity from the fragment   getActivity   finish

User · Answer

15 June 2020 - Updated answer   You have two options for Java and Kotlin  However  logic of both ways are same  You should call activity after call finish   method      Answer for Kotlin     If your activity cannot be null  use Answer 1  However  if your activity can be null  use Answer 2   Answer 1  activity   finish   Answer 2  activity  finish        Answer for Java    getActivity   finish       canerkaseler

User · Answer

yes Fragment class does not implement finish    When working with fragments  instead of using this or refering to the context  always use getActivity    You should call

User · Answer

Try this  There shouldn t be any warning                 Activity thisActivity   getActivity                if  thisActivity    null                    startActivity new Intent thisActivity  yourActivity class       if needed                 thisActivity finish

User · Answer

Very simple     1- just grab activity by getActivity   in the fragment  2- then call finish     So just getActivity   finish    will finish the parent activity

User · Answer

As mentioned by Jon F Hancock  this is how a fragment can  close  the activity by suggesting the activity to close   This makes the fragment portable as is the reason for them   If you use it in a different activity  you might not want to close the activity   Code below is a snippet from an activity and fragment which has a save and cancel button   PlayerActivity  public class PlayerActivity extends Activity      implements PlayerInfo PlayerAddListener        public void onPlayerCancel               Decide if its suitable to close the activity            e g  is an edit being done in one of the other fragments         finish              PlayerInfoFragment  which contains an interface which the calling activity needs to implement   public class PlayerInfoFragment extends Fragment      private PlayerAddListener callback     implemented in the Activity      Override    public void onAttach Activity activity         super onAttach activity        callback   PlayerAddListener  activity           public interface PlayerAddListener          public void onPlayerSave Player p      not shown in impl above        public void onPlayerCancel             public void btnCancel View v          callback onPlayerCancel       the activity s implementation

User · Answer

Every time I use finish to close the fragment  the entire activity closes  According to the docs  fragments should remain as long as the parent activity remains    Instead  I found that I can change views back the the parent activity by using this statement  setContentView R layout activity main    This returns me back to the parent activity   I hope that this helps someone else who may be looking for this

User · Answer

When working with fragments  instead of using this or refering to the context  always use getActivity    You should call  getActivity   finish      to finish your activity from fragment

User · Answer

In Fragment use getActivity finishAffinity    getActivity   finishAffinity      It will remove all the fragment which pushed by the current activity from the Stack with the Activity too

User · Answer

Well actually     I wouldn t have the Fragment try to finish the Activity   That places too much authority on the Fragment in my opinion   Instead  I would use the guide here  http   developer android com training basics fragments communicating html  Have the Fragment define an interface which the Activity must implement   Make a call up to the Activity  then let the Activity decide what to do with the information   If the activity wishes to finish itself  then it can

User · Answer

This does not need assertion  Latest update in fragment in android JetPack requireActivity   finish

[android] Finishing current activity from a fragment

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