cant use ActionBar methods in android studio -

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i trying set things action bar same errors on method use (e.g actionbar.settitle("my title"); or actionbar.setbackgrounddrawable(r.drawable.actionbar_draw);)

i cant use methods it...

they give error:

required android.support.v7.app.actionbar found android.app.actionbar

i using minimum sdk 15 , code:

    package com.tos.test.testactionbarapp;      import android.support.v7.app.actionbar;     import android.support.v7.app.appcompatactivity;     import android.os.bundle;      public class mainactivity extends appcompatactivity {        @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);          actionbar actionbar = getactionbar();         actionbar.settitle("my title");       } }

problem is, app crashes whenever start because of code , get:

                                                                         ---

------ beginning of crash 05-28 15:32:00.403 11476-11476/ccom.tos.test.testactionbarapp e/androidruntime: fatal exception: main process: com.tos.test.testactionbarapp, pid: 11476 java.lang.runtimeexception: unable start activity componentinfo{com.tos.test.testactionbarapp/com.tos.test.testactionbarapp.mainactivity}: java.lang.nullpointerexception: attempt invoke virtual method 'java.lang.charsequence android.app.actionbar.gettitle()' on null object reference @ android.app.activitythread.performlaunchactivity(activitythread.java:2325) @ android.app.activitythread.handlelaunchactivity(activitythread.java:2387) @ android.app.activitythread.access$800(activitythread.java:151) @ android.app.activitythread$h.handlemessage(activitythread.java:1303) @ android.os.handler.dispatchmessage(handler.java:102) @ android.os.looper.loop(looper.java:135) @ android.app.activitythread.main(activitythread.java:5254) @ java.lang.reflect.method.invoke(native method) @ java.lang.reflect.method.invoke(method.java:372) @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:903) @ com.android.internal.os.zygoteinit.main(zygoteinit.java:698) caused by: java.lang.nullpointerexception: attempt invoke virtual method 'java.lang.charsequence android.app.actionbar.gettitle()' on null object reference @ com.tos.test.testactionbarapp.mainactivity.oncreate(mainactivity.java:21) @ android.app.activity.performcreate(activity.java:5990) @ android.app.instrumentation.callactivityoncreate(instrumentation.java:1106) @ android.app.activitythread.performlaunchactivity(activitythread.java:2278) @ android.app.activitythread.handlelaunchactivity(activitythread.java:2387)  @ android.app.activitythread.access$800(activitythread.java:151)  @ android.app.activitythread$h.handlemessage(activitythread.java:1303)  @ android.os.handler.dispatchmessage(handler.java:102)  @ android.os.looper.loop(looper.java:135)  @ android.app.activitythread.main(activitythread.java:5254)  @ java.lang.reflect.method.invoke(native method)  @ java.lang.reflect.method.invoke(method.java:372)  @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:903)  @ com.android.internal.os.zygoteinit.main(zygoteinit.java:698) 

you have import android.support.v7.app.actionbar , use getsupportactionbar() method od activity.


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