GTMOAuth2ViewControllerTouch doesn't show login screen

I'm using objective c gdata client and I have a problem with GTMOAuth2ViewControllerTo开发者_如何学JAVAuch. It was working for me (shows UI, returns callbacks), but now it shows just empty white screen. Any ideas?

So, I have found a solution. It seems to be a wrong build configuration for gdata static library. So I have unset GTM_INCLUDE_OAUTH2 to not include gtm auth controllers to static library and then add this classes directly to application. gtm auth can be found here.

You have to add the GTMOAuth2ViewControllerTouch.xib in your project