I'm building an app that needs to start a video conference from an iPhone. They way i've implemented it is to first check if Skype is installed, if it is, i start video conferencing with skype. If not, im checking if the Google+ app installed. And if it is i want to open that app with a Google+ username to start a hangout with the user.
an example would be:
[[UIApplication sharedApplication] openURL:"googleplus://username@gmail.com"]
Do you know if this is possible, and whats the correct identifier to call?