java - MainActivity to Fragment and from that Fragment back to MainActivity -

solve using getactivity()
have mainactivity.java , repeatentry.java

inside mainactivity have code have repeatentry ui

//i did hide 2 linear layout here buttons , edittext inside ,using following method   hidetwolinearlayout();  showcategorycontainerlayout(); fragment fragment = new repeatentry();  fragmentmanager fm = getfragmentmanager();  fragmenttransaction ft = fm.begintransaction();   //category_cont linear layout container fragment  ft.replace(r.id.category_cont, fragment);  ft.settransition(fragmenttransaction.transit_fragment_open);  ft.commit(); 

inside repeatentry.java sample code

button k = (button) v.findviewbyid(r.id.button);         k.setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view v) {                // intent intent = new intent(getactivity(),mainactivity.class);                // startactivity(intent);                 // if use popbackstack , remove code intent , cannot show hide   //note have method inside mainactivity showtwolinearlayout()                getfragmentmanager().popbackstack();             }         }); 

now question is, do have other option other using intent go mainactivity view

note:edited

you can add transaction backstack , reverse poping backstack code here

 fragment fragment = new repeatentry();  fragmentmanager fm = getfragmentmanager();  fragmenttransaction ft = fm.begintransaction();   //category_cont linear layout container fragment  ft.replace(r.id.category_cont, fragment).addtobackstack("tag");  ft.settransition(fragmenttransaction.transit_fragment_open);  ft.commit(); 

and going activity view call pop backstack

fragmentmanager fm = getfragmentmanager(); fm.popbackstack(); 

also can use tag poping specific transaction with

fm.popbackstack("tag");