android - How to change the Text color of the action Bar using Material Theme -

i override background color of actionbar style.xml code:

<?xml version="1.0" encoding="utf-8"?> <resources> <style name="apptheme" parent="android:theme.material.light.darkactionbar">     <item name="android:statusbarcolor">@color/colorprimarydark</item>     <item name="android:actionbarstyle">@style/myactionbar</item> </style>  <!-- action bar --> <style name="myactionbar" parent="android:theme.material.light.darkactionbar">     <item name="android:background">@color/colorprimary</item> </style>  </resources> 

the code main activity here :

public class mainactivity extends activity {     private actionbar mactionbar;      @override     protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);     mtitles = firstitem.gettitle(); //setting title of first item     /**      * action bar customization      */     mactionbar = getactionbar();     //latest     mactionbar.settitle("  latest"); // set first title     mactionbar.setdisplayhomeasupenabled(true); // enabling action bar app icon , behaving toggle button     mactionbar.setdisplayshowhomeenabled(false); // hide tha app icon action bar     mactionbar.sethomebuttonenabled(true); } 

the problem can't see text of action bar if set color style.xml . futhermore can't use things :

<item name="android:textcolorprimary">@color/row_child_menu_title</item> 

or

<item name="android:coloraccent">@color/row_child_menu_title</item> 

the result same. text being disappeared , menu icons , toggle icon visible

thanks in advance