Custom TitleBar in activity ANDROID

I have a problem. I would like custom my TitleBar and when I try with this method:

requestWindowFeature(Window.FEATURE_CUSTOM_TITLE); getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.mytitle);

But he crash when i am in the Intent of my TabBar.

He works in my main Activity, I think there are a different method for the intent of tabBar for customize the titleBar.

Someone known how it's done?

I'am a begginer developper Android.

Thanks !

requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);     

getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.mytitle);

put your setContentLayout(); in the middle of these two.