Why don't I open option menu by click a button when I use ActionBarActivity in android? -


i can open option menu using code openoptionsmenu() while click button if use action, use class actionbaractivity instead of action, find openoptionsmenu() don't work, , option menu can't opened, why? thanks!

to jared burrows :

a: why need functionality?

q: because need open option menu clicking more... button

enter image description here

package com.example.cuiwei.myapplication;  import android.support.v7.app.actionbaractivity; import android.os.bundle; import android.view.menu; import android.view.menuitem; import android.view.view;   public class mainactivity extends actionbaractivity {      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);          findviewbyid(r.id.button).setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view v) {                 openoptionsmenu();             }         });        }      @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);     } }    <relativelayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"     android:layout_height="match_parent" android:paddingleft="@dimen/activity_horizontal_margin"     android:paddingright="@dimen/activity_horizontal_margin"     android:paddingtop="@dimen/activity_vertical_margin"     android:paddingbottom="@dimen/activity_vertical_margin" tools:context=".mainactivity">      <textview android:text="@string/hello_world" android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:id="@+id/textview" />      <button         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="new button"         android:id="@+id/button"         android:layout_below="@+id/textview"         android:layout_torightof="@+id/textview"         android:layout_toendof="@+id/textview"         android:layout_marginleft="23dp"         android:layout_marginstart="23dp"         android:layout_margintop="158dp" />  </relativelayout>   <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="com.example.cuiwei.myapplication" >      <application         android:allowbackup="true"         android:icon="@mipmap/ic_launcher"         android:label="@string/app_name"         android:theme="@style/apptheme" >         <activity             android:name=".mainactivity"             android:label="@string/app_name" >             <intent-filter>                 <action android:name="android.intent.action.main" />                  <category android:name="android.intent.category.launcher" />             </intent-filter>         </activity>     </application>  </manifest>   <resources>      <!-- base application theme. -->     <style name="apptheme" parent="theme.appcompat.light.darkactionbar">         <!-- customize theme here. -->     </style>  </resources>


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