[Android] no animations when Activity started.

Activity.java

Intent intent = new Intent(this,MyActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);

startActivity(intent);

themes.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="MyTheme" parent="android:Theme">
        <item name="android:windowAnimationStyle">@android:style/Animation</item>
    </style>
</resources>