title: Why my Android app don't show icon and text in ActionBar?
body: <p>I'm a beginner in Android development and I trying to build my theme but I have a problem. I tried searching answers on google, d.android but to no avail.</p>
  
  <p><code>ActionBar</code> is changing color (this is OK), but text and icon of app doesn't show (only if I use my theme - if I use default theme everything is OK). Why?</p>
  
  <p><em>res/values/styles.xml</em>:</p>
  
  <pre><code>&lt;resources xmlns:android="http://schemas.android.com/apk/res/android"&gt;
  
  &lt;style name="AppBaseTheme" parent="android:Theme.Light"&gt;
  &lt;/style&gt;
  
  &lt;!-- Application theme. --&gt;
  &lt;style name="AppTheme" parent="AppBaseTheme"&gt;
      &lt;item name="android:actionBarStyle"&gt;@style/MyActionBar&lt;/item&gt;
  &lt;/style&gt;
  
  &lt;style name="MyActionBar" parent="AppTheme"&gt;
      &lt;item name="android:background"&gt;HEX COLOR&lt;/item&gt;
      &lt;item name="android:titleTextStyle"&gt;@style/MyTitleTextStyle&lt;/item&gt;
  &lt;/style&gt;
  
  &lt;style name="MyTitleTextStyle" parent="AppTheme"&gt;
      &lt;item name="android:textColor"&gt;#FFFFFF&lt;/item&gt;
  &lt;/style&gt;
  
  &lt;/resources&gt;
  </code></pre>
  
  <p>Here is my <em>AndroidManifest.xml</em></p>
  
  <pre><code>    &lt;?xml version="1.0" encoding="utf-8"?&gt;
      &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
          package="com.example.appname"
          android:versionCode="1"
          android:versionName="1.0" &gt;
  
      &lt;uses-sdk
          android:minSdkVersion="11"
          android:targetSdkVersion="18" /&gt;
  
      &lt;application
          android:allowBackup="true"
          android:icon="@drawable/ic_launcher"
          android:label="@string/app_name"
          android:theme="@style/AppTheme" &gt;
  
          &lt;activity
              android:name="com.example.appname.Intro"
              android:label="@string/app_name" &gt;
              &lt;intent-filter&gt;
                  &lt;action android:name="android.intent.action.MAIN" /&gt;
                  &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
              &lt;/intent-filter&gt;
          &lt;/activity&gt;
  
      &lt;/application&gt;
  &lt;/manifest&gt;
  </code></pre>