Actionbar not showing up, though its visible in preview

its me again, I have another issue with setting the theme in my app. Its all good on the preview, it shows the theme itself in a good way, but when I see it in the app itself, its hiding the action bar but the status bar is colored in the way i wanted. This is what I have in AndroidManifest :

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">
    <activity
        android:name=".activity.SplashScreen"
        android:configChanges="keyboard|keyboardHidden|orientation|screenSize"
        android:label="@string/app_name"
        android:screenOrientation="portrait">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity android:name=".activity.StartScreen" />
    <activity android:name=".activity.HomeActivity" android:label="@string/title_activity_home" />
    <activity android:name=".activity.StoreActivity"></activity>
</application>

I've tried removing the theme="@style/AppTheme", that results in having the actionbar back but the colors cannot be changed for some reason.

This is the styles.xml :

<resources>

<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
</style>

Thanks in advance!