AppDelegate.m

#import <GoogleCast/GoogleCast.h>

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
  // ADD THIS CODE SNIPPET ->
  GCKDiscoveryCriteria *criteria = [[GCKDiscoveryCriteria alloc] initWithApplicationID:kGCKDefaultMediaReceiverApplicationID];
  GCKCastOptions* options = [[GCKCastOptions alloc] initWithDiscoveryCriteria:criteria];
  [GCKCastContext setSharedInstanceWithOptions:options];
  // -
  return YES;
}
@end