You can open the Google Plus application on a specific page using a URL in the following format:
gplus://plus.google.com/app/basic/+YourPageName/posts?source=appredir
You can determine the redirect URL for a specific page by installing the user agent in Safari on your Mac (via the Design menu) in one of the Safari iOS options, and then visiting the Google Plus page. The page will open, but the crawler will also throw an error because the page tried to open the URL gplus:// , which did not know what to do. It will show you the url that gave the error.
Using this URL in a call to [[UIApplication sharedApplication] openURL:] , you open the Google+ application. Remember to wrap it when calling [[UIApplication sharedApplication] canOpenURL:] if the user does not have the Google+ application.
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