I am trying to make a post to g+ from iOS Application using google SDK. I am working with the following lines of code, everything is working but PreText is not setting.
id <GPPShareBuilder> shareBuilder = [[GPPShare sharedInstance] shareDialog];
[shareBuilder setPrefillText:prefilText];
[shareBuilder setURLToShare:[NSURL URLWithString:@"http://placekitten.com/500/400"]];
[shareBuilder open];
Hi I had this problem too and I solved that by using native share, if the user doesn't have permission you can tell the app to ask to Google+ for permission.
I used this library which do this for you, but you can read the code and customise it.
https://github.com/lysannschlegel/GooglePlusShareActivity
I hope it helps you.