Google Analytics How hard is to write it in a right way?

Google Analytics

//That's a correct version of onLoad method it takes a NSNUmber as a time parameter, not NSTimeInterval.
With prior Google's implementation I couldn't even build the project without warnings or errors.


- (void)onLoad:(NSNumber *)loadTime name:(NSString *)name andLabel:(NSString *)label{
    
    // May return nil if a tracker has not already been initialized with a
    // property ID.
    id tracker = [[GAI sharedInstance] defaultTracker];
    
    [tracker send:[[GAIDictionaryBuilder createTimingWithCategory:@"resources"    // Timing category (required)
                                                        interval:loadTime        // Timing interval (required)
                                                            name:name  // Timing name
                                                    label:label]build]];// Timing label
}



//To get rid of annoying warning remove the  id<GAITracker> tracker and just leave the call to shared instance 
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    _appStart = [NSDate date];
    //Initialize tracker
    [GAI sharedInstance].trackUncaughtExceptions = YES;
    
    // Optional: set Logger to VERBOSE for debug information.
   // [[[GAI sharedInstance] logger] setLogLevel:kGAILogLevelVerbose];
    
    // Initialize tracker.
   [[GAI sharedInstance] trackerWithTrackingId:@"UA-43467716-1"];
    
// rest of implementation
return YES;
}