android - Null pointer exception when setting values to TextView in Fragments -

i have 2 fragments in mainactivity, first one, user clicks on button , send through listener char second fragment, depends of char textview in second fragment must print text. in metho onactivitycreated textview null.

this code: fragmentone

public void onactivitycreated(bundle savedinstancestate) {     super.onactivitycreated(savedinstancestate);     btnchefcito = (button)getview().findviewbyid(r.id.btnchefcito);     btnchefcita = (button)getview().findviewbyid(r.id.btnchefcita);      btnchefcito.setonclicklistener(new view.onclicklistener() {         @override         public void onclick(view v) {             welcomelistener.elegirsexo(sexo);             replacefragment();         }     });      btnchefcita.setonclicklistener(new view.onclicklistener() {         @override         public void onclick(view v) {             sexo="f";             welcomelistener.elegirsexo(sexo);             replacefragment();         }     }); } 

this second fragment

@override public void onactivitycreated(bundle savedinstancestate) {     super.onactivitycreated(savedinstancestate);     tvibienvenida = (textview)getview().findviewbyid(r.id.tvibienvenida); }    public void getsex(string sex){     if(sex.equals("m")){         tvibienvenida.settext(bienvenido);     }else if(sex.equals("f")){         tvibienvenida.settext(bienvenida);     } } 

instead of doing in onactivitycreated in oncreateview:

private static view viewholder;  @override     public view oncreateview(layoutinflater inflater, viewgroup container, bundle savedinstancestate)      {         viewholder = inflater.inflate(r.layout.yourfragmentlayout, container, false);          btnchefcito = (button) viewholder.findviewbyid(r.id.yourbuttonid);  btnchefcito.setonclicklistener(new view.onclicklistener() {         @override         public void onclick(view v) {             welcomelistener.elegirsexo(sexo);             replacefragment();         }     });           return viewholder;     }