Google + iPhone API sign in and share without leaving app

Question

I recently integrated the Google + API in my App, it was a breeze, my only problem with it, is that everything requires you to leave the app and then come back (it uses URL

Answer 1

@PeterLapisu approach works good if the Google Plus App is not installed. Then outgoing url prefixes from app are as follows:

• @"googlechrome-x-callback:"
• @"https://accounts.google.com/o/oauth2/auth"

However if the Google App is installed there is one more outgoing url and the prefix list looks as follows:

• @"com.google.gppconsent.2.4.1:"
• @"googlechrome-x-callback:"
• @"https://accounts.google.com/o/oauth2/auth"

So, if the Google App is installed, it will be launched simultaneously with our app UIViewController that contains webview.Then if user sucessfully logs in with Google App he will be directed back to our app and the ViewController will be visible.

To prevent this Google App should be allowed to login user and direct him back to our app. According to this discussion: https://code.google.com/p/google-plus-platform/issues/detail?id=900 it is allowed by Apple.

So in my implementation firstly I am checking if the Google App is installed:

- (BOOL)openURL:(NSURL*)url {

NSURL *googlePlusURL = [[NSURL alloc] initWithString:@"gplus://plus.google.com/"];

BOOL hasGPPlusAppInstalled = [[UIApplication sharedApplication] canOpenURL:googlePlusURL];


if(!hasGPPlusAppInstalled)
{
    if ([[url absoluteString] hasPrefix:@"googlechrome-x-callback:"]) {

        return NO;

    } else if ([[url absoluteString] hasPrefix:@"https://accounts.google.com/o/oauth2/auth"]) {

        [[NSNotificationCenter defaultCenter] postNotificationName:ApplicationOpenGoogleAuthNotification object:url];
        return NO;

    }
}


return [super openURL:url];
}

EDIT:

Now I can confirm that my app was finally approved with this solution.