Default Template on Android studio deaprecated -


ok earlier asking how come on windows phone developing, didn't sit , wait replys got started.

i installed android studio learned didn't have 4.4 api default (the version of android new phone running) located sdk manager , installed missing sdk preview pane layout editor not render...i learnt needed go module settings , change target there, preview pane drop down , change targeted android version there. added simple button , realised have error java ...that have yet touch! 

public class maindisplay extends actionbaractivity {

actionbaractivity deprecated.

...but that's default template!

getmenuinflater().inflate(r.menu.menu_main, menu);

cannot resolve symbol r .

...again default "blank activity" template

checked updates , latest version of android studio: 1.2.1.1 jdk latest version : jdk1.8.0_45 (64bit)

any ideas why android studio (freshly installed today) generating broken templates or other ideas how fix?

edit

so uninstalled android studio, sdk , deleted folders created reinstalled installed version 1.7 of java jdk

same errors on new project,

this source code generates:

import android.support.v7.app.actionbaractivity; import android.os.bundle; import android.view.menu; import android.view.menuitem;   public class mainactivity extends actionbaractivity {      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);     }      @override     public boolean oncreateoptionsmenu(menu menu) {         // inflate menu; adds items action bar if present.         getmenuinflater().inflate(r.menu.menu_main, menu);         return true;     }      @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);     }

as can see extending depracated class, , adding r's cant resolve .....and before have done anything.

but tonight have ran out of time, had 7 hours free start porting app android , gone setting dev enviroment, wouldnt mind not working , have no idea why

according video should make 2 changes

enter image description here

after did 2 changes worked fine

for more information have [1] , blog

update 1

after change, clean project , sync project gradle file.

enter image description here

update 2

if after have problem resolving symbol r errors after sdk update in android studio can follow steps showing in blog


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