iOS 8 NSInternalInconsistencyException

Question

I get the following crash reports. They only occur on devices with iOS 8. Notice the message:

Terminating app due to uncaught exception \'NSInternalInconsis         


        

Answer 1

The bug was in the following callback:

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult result))completionHandler

The crash occurs when you call the completionHandler twice. This happens after iOS8.