android - item icon doesn't appear in actionbar -


my problem menu item icon . can't see icon in action bar . there 1 activity in app . in fact it's simple hello word , want add icon action bar enter image description here

menu.xml:

<?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" xmlns:tools="http://schemas.android.com/tools" tools:context=".mainactivity" > <!-- black icon --> <item     android:id="@+id/action_create_order"     android:title="create order"     android:orderincategory="1"     app:showasaction="ifroom"     android:icon="@drawable/ic_add_black_36dp"     > </item> <!-- white icon --> <item     android:id="@+id/action_setting"     android:title="settins"     app:showasaction="never"     android:orderincategory="100"     > </item>   </menu>

mainactivity.java:

public class mainactivity extends activity {  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main); }  @override public boolean oncreateoptionsmenu(menu menu) {     getmenuinflater().inflate(r.menu.menu_main , menu);     return super.oncreateoptionsmenu(menu); } }

why icon doesn't appear in action bar ?

try changing

app:showasaction="ifroom"

to 

app:showasaction="always"

edit:

i suggest change activity appcompatactivity , use toolbar actionbar


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