android - Manage Title with Fragment Stack Changed -

i using fragment activity , number of fragments added , poped out on press.

supposed adding fragment b fragment a. title of action bar set in changes navigating b; not restoring when pop fragment b out of fragment stack onresume of fragment not being called.

i using code:

fragmentmanager fragmentmanager = getsupportfragmentmanager(); fragmentmanager.begintransaction().add(r.id.container, fragmenttoreplace, tag).addtobackstack(tag).commit(); 

and pop out last fragment:

fragmentmanager.popbackstack(); 

how manage this. please suggest.

you can use onbackstackchanged listener called whenever fragment popped back. add listener use this:

 getfragmentmanager().addonbackstackchangedlistener(this); 

in override function, check fragment popped , according can change actionbar title:

  @override public void onbackstackchanged() {   //check fragment framelayout container r.id.container   // depending on fragment can change title   settitle("xyz");        }