Google Analytics for iOS SDK 2.0 - What to do with "tracker" variable in app delegate?

google-analytics, ios, iphone

Solution

If you don't need a reference to your tracker (and it looks like you don't) you can remove the warning by changing the last line of code from

id<GAITracker> tracker = [[GAI sharedInstance] trackerWithTrackingId:@"UA-YOUR-TRACKING-ID"];

to

[[GAI sharedInstance] trackerWithTrackingId:@"UA-YOUR-TRACKING-ID"];

A use case for keeping a reference to the tracker in this block of code could be if you wanted to create an event for when a user starts the application, without having to call `[GAI sharedInstance]` to get that reference.

Problem

After following the overview found here: https://developers.google.com/analytics/devguides/collection/ios/v2/ I am seeing an `Unused variable "tracker"` warning on the last line of the code added to: `- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions` Here's the code from Google's overview page: ``` - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Optional: automatically track uncaught exceptions with Google Analytics. [GAI sharedInstance].trackUncaughtExceptions = YES; // Optional: set Google Analytics dispatch interval to e.g. 20 seconds. [GAI sharedInstance].dispatchInterval = 20; // Optional: set debug to YES for extra debugging information. [GAI sharedInstance].debug = YES; // Create tracker instance. id<GAITracker> tracker = [[GAI sharedInstance] trackerWithTrackingId:@"UA-YOUR-TRACKING-ID"]; } ``` `tracker` truly sees absolutely no use past this point and the overview document doesn't really say what to do with it. Any suggestions?

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