java - How to add icon to the menu of actionbar in android studio -


my app has menu (the default icon of menu 3 dots) contains several items. want add icon menu not icon actionbar. research 3 hours of tutorials adding icons actionbar not menu. knows how or have tutorial link?

enter image description here

on top right

check code ,

in .java file add oncreateoptionsmenu code,

@override     public boolean oncreateoptionsmenu(menu menu) {         menuinflater inflater = getmenuinflater();         inflater.inflate(r.menu.menu_inbox, menu); //.xml file name         return super.oncreateoptionsmenu(menu);     }

now, create menu_inbox.xml defined above in java code

<?xml version="1.0" encoding="utf-8"?> <menu xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto">      <item         android:id="@+id/action_websearch"         android:icon="@mipmap/ic_launcher_menu_o"  //icon 3 dots         android:orderincategory="3"  //number of item in         android:title="info"         //title on longpress on menu icon         app:showasaction="ifroom">   //to show menu on upper side          <menu>             <item                 android:id="@+id/action_reply"                 android:title="@string/reply" />              <item                 android:id="@+id/action_replyall"                 android:title="@string/replyall" />              <item                 android:id="@+id/action_forward"                 android:title="@string/forward" />         </menu>     </item>  </menu>

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