Android DrawerLayout doesn't show the right indicator icon -

i'm trying use new drawerlayout list. problem though set drawer listener, indicator on actionbar still arrow icon instead of 3-line icon intends draw. following oncreate function:

public void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_front_page);      // swiping pager set     msectionspageradapter = new sectionspageradapter(getsupportfragmentmanager());      mviewpager = (viewpager) findviewbyid(r.id.pager);     mviewpager.setadapter(msectionspageradapter);      // sliding drawer set     mhabitcontract = new habitscontract(this);     mdrawerlayout = (drawerlayout) findviewbyid(r.id.front_page_layout);     mdrawerlist = (listview) findviewbyid(r.id.habit_list);     mdrawerlayout.setdrawershadow(r.drawable.drawer_shadow, gravitycompat.start);     mdrawerlist.setadapter(new habitadapter(mhabitcontract.gethabititems(), this));      // fixme: indicator image doesn't show     mdrawertoggle = new actionbardrawertoggle(             this,                  /* host activity */             mdrawerlayout,         /* drawerlayout object */             r.drawable.ic_navigation_drawer,  /* nav drawer image replace 'up' caret */             r.string.drawer_open,  /* "open drawer" description accessibility */             r.string.drawer_close  /* "close drawer" description accessibility */     ) {         public void ondrawerclosed(view view) {             //getactionbar().settitle(mtitle);             invalidateoptionsmenu(); // creates call onprepareoptionsmenu()         }          public void ondraweropened(view drawerview) {             //getactionbar().settitle(mdrawertitle);             invalidateoptionsmenu(); // creates call onprepareoptionsmenu()         }     };     mdrawerlayout.setdrawerlistener(mdrawertoggle);      // action bar set     getactionbar().setdisplayhomeasupenabled(true);     getactionbar().sethomebuttonenabled(true);     getactionbar().setdisplayshowhomeenabled(true); } 

can help?

update: found problem. added onpostcreate function follows, , it's working.

protected void onpostcreate(bundle savedinstancestate) {     super.onpostcreate(savedinstancestate);     // sync toggle state after onrestoreinstancestate has occurred.     mdrawertoggle.syncstate(); } 

you need syncstate() call of actionbardrawertoggle object onpostcreate()

@override protected void onpostcreate(bundle savedinstancestate) {     super.onpostcreate(savedinstancestate);     // sync toggle state after onrestoreinstancestate has occurred.     mdrawertoggle.syncstate(); }