titanium android custom theme no window actionbar

I've an android app written using titanium sdk. the new sdk (3.5.0GA) changed things about managing the default window title and actionbar behaviour.

the official blog offers 3 ways to solve this problem :

the first solution ($.index.activity.actionBar.hide();) has a problem: the actionbar is shown for a while before being hidden. that animation is not what I want.

the second solution would be better if I can make it works (customtheme.xml)

my situation is as follows:

tiapp.xml

<android xmlns:android="http://ift.tt/nIICcg">
    <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="19"/>
    <manifest>
        <uses-permission android:name="android.permission.INTERNET"/>
        <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
        <application android:theme="@style/MyTheme"/>
        <application android:hardwareAccelerated="true"/>
        <application android:largeHeap="true"/>
    </manifest>
</android>

/platform/android/res/values/customtheme.xml

<?xml version="1.0" encoding="utf-8"?>
    <resources>
    <style name="MyTheme">
        <item name="windowActionBar">false</item>
        <item name="android:windowNoTitle">true</item>
    </style>
</resources> 

the same thing done with a plain android studio project, does the magic.

I don't know how to solve my problem. anybody knows?

ps. didn't try the third option, but just want to make the second one works. less code lines...