I have an iphone app that receives a phone number externally and pops up the phone dialer with a number loaded to dial. However, my alertview for the phone pop up gives the user the ability to select from Mobile Carrier, Facetime and Skype. I would like to add google hangouts to that option list but don't know how to call it properly.
I need to be able to invoke the hangouts app programmatically from my own IOS app and pass a phone number to it to dial. I know I can invoke it using the custom URL com.google.hangouts:// but I don't know how to pass a phone number to hangouts to place a phone call with voip so the app just opens and the user has to retype the number to make the call.
The complete list of parameters I can pass into the app via the custom URL scheme would be great and also if there is a callback function.