I am adopting the Gmail API in iOS and I am getting the warning:
initWithRequest is deprecated
in the following line:
connection_ = [[connectionClass alloc] initWithRequest:request_ delegate:self startImmediately:NO];
The line is in the source file GTMHTTPFetcher.m of the API library.
What is the substitute for the deprecated -initWithRequest: method?
It seems that the whole NSURLConnection API has been deprecated in iOS 9. Existing apps will continue to work, but new builds (linked against iOS SDK) must use the newer NSURLSession API.
Ray Wenderlich has a good tutorial here. Also, of course, check the official documentation.