java - Refresh Navigation Drawer Fragment Android? -
i have question navigation drawer fragment. know navigation drawer has multiple sections. let's 3 sections (home, profile, log out). intent when user click on log out, navigation drawer refresh (home, log in). trying play code couldn't figured out..
the files have are:
mainactivity.java
public class mainactivity extends actionbaractivity implements navigationdrawerfragment.navigationdrawercallbacks { /** * fragment managing behaviors, interactions , presentation of navigation drawer. */ private navigationdrawerfragment mnavigationdrawerfragment; /** * used store last screen title. use in {@link #restoreactionbar()}. */ private charsequence mtitle; @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); mnavigationdrawerfragment = (navigationdrawerfragment) getsupportfragmentmanager().findfragmentbyid(r.id.navigation_drawer); mtitle = gettitle(); // set drawer. mnavigationdrawerfragment.setup( r.id.navigation_drawer, (drawerlayout) findviewbyid(r.id.drawer_layout)); } @override public void onnavigationdraweritemselected(int position) { android.support.v4.app.fragment objfragment = null; if(!globalvars.is_logged_in) { //if user not logged in switch (position){ case 0: objfragment = new home(); break; case 1: objfragment = new loginactivity(); break; } } else { //if user logged in switch (position){ case 0: objfragment = new home(); break; case 1: objfragment = new profile(); break; case 2: objfragment = new logout(); globalvars.is_logged_in = false; mnavigationdrawerfragment.oncreateview(this.getlayoutinflater(), null, null); break; } } // update main content replacing fragments fragmentmanager fragmentmanager = getsupportfragmentmanager(); fragmentmanager.begintransaction().replace(r.id.container, objfragment).commit(); } public void onsectionattached(int number) { if(!globalvars.is_logged_in) { switch (number) { case 1: mtitle = getstring(r.string.title_section1); break; case 2: mtitle = getstring(r.string.title_section3); break; } } else { switch (number) { case 1: mtitle = getstring(r.string.title_section1); break; case 2: mtitle = getstring(r.string.title_section2); break; case 3: mtitle = "log out"; break; } } } public void restoreactionbar() { actionbar actionbar = getsupportactionbar(); actionbar.setnavigationmode(actionbar.navigation_mode_standard); actionbar.setdisplayshowtitleenabled(true); actionbar.settitle(mtitle); } @override public boolean oncreateoptionsmenu(menu menu) { if (!mnavigationdrawerfragment.isdraweropen()) { // show items in action bar relevant screen // if drawer not showing. otherwise, let drawer // decide show in action bar. getmenuinflater().inflate(r.menu.main, menu); restoreactionbar(); return true; } return super.oncreateoptionsmenu(menu); } @override public boolean onoptionsitemselected(menuitem item) { // handle action bar item clicks here. action bar // automatically handle clicks on home/up button, long // specify parent activity in androidmanifest.xml. int id = item.getitemid(); //noinspection simplifiableifstatement /*if (id == r.id.action_settings) { return true; }*/ return super.onoptionsitemselected(item); } /** * placeholder fragment containing simple view. */ public static class placeholderfragment extends fragment { /** * fragment argument representing section number * fragment. */ private static final string arg_section_number = "section_number"; /** * returns new instance of fragment given section * number. */ public static placeholderfragment newinstance(int sectionnumber) { placeholderfragment fragment = new placeholderfragment(); bundle args = new bundle(); args.putint(arg_section_number, sectionnumber); fragment.setarguments(args); return fragment; } public placeholderfragment() { } @override public view oncreateview(layoutinflater inflater, viewgroup container, bundle savedinstancestate) { view rootview = inflater.inflate(r.layout.activity_home, container, false); return rootview; } @override public void onattach(activity activity) { super.onattach(activity); ((mainactivity) activity).onsectionattached( getarguments().getint(arg_section_number)); } } } as can notice static variable is_logged_in way tell me if user clicked on log out or not.
i updated file navigationdrawerfragment.java android studio created me @ beginning step when asked me choose type of activity , did not choose blank one, chose slide menu 1 created navigation drawer fragment
so code in navigationdrawerfragment.java is
public class navigationdrawerfragment extends fragment { /** * remember position of selected item. */ private static final string state_selected_position = "selected_navigation_drawer_position"; /** * per design guidelines, should show drawer on launch until user manually * expands it. shared preference tracks this. */ private static final string pref_user_learned_drawer = "navigation_drawer_learned"; /** * pointer current callbacks instance (the activity). */ private navigationdrawercallbacks mcallbacks; /** * helper component ties action bar navigation drawer. */ private actionbardrawertoggle mdrawertoggle; private drawerlayout mdrawerlayout; private listview mdrawerlistview; private view mfragmentcontainerview; private int mcurrentselectedposition = 0; private boolean mfromsavedinstancestate; private boolean muserlearneddrawer; public navigationdrawerfragment() { } @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); // read in flag indicating whether or not user has demonstrated awareness of // drawer. see pref_user_learned_drawer details. sharedpreferences sp = preferencemanager.getdefaultsharedpreferences(getactivity()); muserlearneddrawer = sp.getboolean(pref_user_learned_drawer, false); if (savedinstancestate != null) { mcurrentselectedposition = savedinstancestate.getint(state_selected_position); mfromsavedinstancestate = true; } // select either default item (0) or last selected item. selectitem(mcurrentselectedposition); } @override public void onactivitycreated(bundle savedinstancestate) { super.onactivitycreated(savedinstancestate); // indicate fragment influence set of actions in action bar. sethasoptionsmenu(true); } @override public view oncreateview(layoutinflater inflater, viewgroup container, bundle savedinstancestate) { mdrawerlistview = (listview) inflater.inflate( r.layout.fragment_navigation_drawer, container, false); mdrawerlistview.setonitemclicklistener(new adapterview.onitemclicklistener() { @override public void onitemclick(adapterview<?> parent, view view, int position, long id) { selectitem(position); } }); if(!globalvars.is_logged_in) { //the user not logged in mdrawerlistview.setadapter(new arrayadapter<string>( getactionbar().getthemedcontext(), android.r.layout.simple_list_item_activated_1, android.r.id.text1, new string[]{ //section1: home section2: profile section3:login getstring(r.string.title_section1), getstring(r.string.title_section3), })); } else { //the user logged in mdrawerlistview.setadapter(new arrayadapter<string>( getactionbar().getthemedcontext(), android.r.layout.simple_list_item_activated_1, android.r.id.text1, new string[]{ //section1: home section2: profile section3:login getstring(r.string.title_section1), getstring(r.string.title_section2), "log out", })); } mdrawerlistview.setitemchecked(mcurrentselectedposition, true); return mdrawerlistview; } public boolean isdraweropen() { return mdrawerlayout != null && mdrawerlayout.isdraweropen(mfragmentcontainerview); } /** * users of fragment must call method set navigation drawer interactions. * * @param fragmentid android:id of fragment in activity's layout. * @param drawerlayout drawerlayout containing fragment's ui. */ public void setup(int fragmentid, drawerlayout drawerlayout) { mfragmentcontainerview = getactivity().findviewbyid(fragmentid); mdrawerlayout = drawerlayout; // set custom shadow overlays main content when drawer opens mdrawerlayout.setdrawershadow(r.drawable.drawer_shadow, gravitycompat.start); // set drawer's list view items , click listener actionbar actionbar = getactionbar(); actionbar.setdisplayhomeasupenabled(true); actionbar.sethomebuttonenabled(true); // actionbardrawertoggle ties the proper interactions // between navigation drawer , action bar app icon. mdrawertoggle = new actionbardrawertoggle( getactivity(), /* host activity */ mdrawerlayout, /* drawerlayout object */ r.drawable.ic_drawer, /* nav drawer image replace 'up' caret */ r.string.navigation_drawer_open, /* "open drawer" description accessibility */ r.string.navigation_drawer_close /* "close drawer" description accessibility */ ) { @override public void ondrawerclosed(view drawerview) { super.ondrawerclosed(drawerview); if (!isadded()) { return; } getactivity().supportinvalidateoptionsmenu(); // calls onprepareoptionsmenu() } @targetapi(build.version_codes.gingerbread) @override public void ondraweropened(view drawerview) { super.ondraweropened(drawerview); if (!isadded()) { return; } if (!muserlearneddrawer) { // user manually opened drawer; store flag prevent auto-showing // navigation drawer automatically in future. muserlearneddrawer = true; sharedpreferences sp = preferencemanager .getdefaultsharedpreferences(getactivity()); sp.edit().putboolean(pref_user_learned_drawer, true).apply(); } getactivity().supportinvalidateoptionsmenu(); // calls onprepareoptionsmenu() } }; // if user hasn't 'learned' drawer, open introduce them drawer, // per navigation drawer design guidelines. if (!muserlearneddrawer && !mfromsavedinstancestate) { mdrawerlayout.opendrawer(mfragmentcontainerview); } // defer code dependent on restoration of previous instance state. mdrawerlayout.post(new runnable() { @override public void run() { mdrawertoggle.syncstate(); } }); mdrawerlayout.setdrawerlistener(mdrawertoggle); } private void selectitem(int position) { mcurrentselectedposition = position; if (mdrawerlistview != null) { mdrawerlistview.setitemchecked(position, true); } if (mdrawerlayout != null) { mdrawerlayout.closedrawer(mfragmentcontainerview); } if (mcallbacks != null) { mcallbacks.onnavigationdraweritemselected(position); } } @override public void onattach(activity activity) { super.onattach(activity); try { mcallbacks = (navigationdrawercallbacks) activity; } catch (classcastexception e) { throw new classcastexception("activity must implement navigationdrawercallbacks."); } } @override public void ondetach() { super.ondetach(); mcallbacks = null; } @override public void onsaveinstancestate(bundle outstate) { super.onsaveinstancestate(outstate); outstate.putint(state_selected_position, mcurrentselectedposition); } @override public void onconfigurationchanged(configuration newconfig) { super.onconfigurationchanged(newconfig); // forward new configuration drawer toggle component. mdrawertoggle.onconfigurationchanged(newconfig); } @override public void oncreateoptionsmenu(menu menu, menuinflater inflater) { // if drawer open, show global app actions in action bar. see // showglobalcontextactionbar, controls top-left area of action bar. if (mdrawerlayout != null && isdraweropen()) { inflater.inflate(r.menu.global, menu); showglobalcontextactionbar(); } super.oncreateoptionsmenu(menu, inflater); } @override public boolean onoptionsitemselected(menuitem item) { if (mdrawertoggle.onoptionsitemselected(item)) { return true; } /*if (item.getitemid() == r.id.action_example) { toast.maketext(getactivity(), "example action.", toast.length_short).show(); return true; }*/ return super.onoptionsitemselected(item); } /** * per navigation drawer design guidelines, updates action bar show global app * 'context', rather what's in current screen. */ private void showglobalcontextactionbar() { actionbar actionbar = getactionbar(); actionbar.setdisplayshowtitleenabled(true); //actionbar.setnavigationmode(actionbar.navigation_mode_standard); actionbar.settitle(r.string.app_name); } private actionbar getactionbar() { return ((actionbaractivity) getactivity()).getsupportactionbar(); } /** * callbacks interface activities using fragment must implement. */ public static interface navigationdrawercallbacks { /** * called when item in navigation drawer selected. */ void onnavigationdraweritemselected(int position); } } any great guys...
what try taking code use set adapter, , putting own method this:
private void setuplistview(){ if(!globalvars.is_logged_in) { //the user not logged in mdrawerlistview.setadapter(new arrayadapter<string>( getactionbar().getthemedcontext(), android.r.layout.simple_list_item_activated_1, android.r.id.text1, new string[]{ //section1: home section2: profile section3:login getstring(r.string.title_section1), getstring(r.string.title_section3), })); } else { //the user logged in mdrawerlistview.setadapter(new arrayadapter<string>( getactionbar().getthemedcontext(), android.r.layout.simple_list_item_activated_1, android.r.id.text1, new string[]{ //section1: home section2: profile section3:login getstring(r.string.title_section1), getstring(r.string.title_section2), "log out", })); } } then, inside oncreateview(), replace code line setuplistview(), , in onclicklistener listview can check if clicked logout/logon, , after change global variable can call setuplistview() again.