CODEWITHSUNDEEP
iosxcode6
kailee
kailee

Reputation: 33

Can't endBackgroundTask: no background task exists with identifier 1fd57580, or it may have already been ended

The AppDelegate.m file contains

- (void)applicationDidEnterBackground:(UIApplication *)application
{
    UIBackgroundTaskIdentifier taskID = [application beginBackgroundTaskWithExpirationHandler:^{
        [application endBackgroundTask:taskID];
    }];
}

I don't know why I have got this message in the gdb

Can't endBackgroundTask: no background task exists with identifier 1fd57580, or it may have already been ended. Break in UIApplicationEndBackgroundTaskError() to debug.

Upvotes: 2

Views: 6275

Answers (2)

Anand3777
Anand3777

Reputation: 458

If you are using location updates in the background, add the code below at the time of getting location authorization from the user. That's because Apple changed the default value of allowsBackgroundLocationUpdates to NO from iOS 9 onwards.

if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 9) {
    locationManager.allowsBackgroundLocationUpdates = YES;
}

Upvotes: 1

rmaddy
rmaddy

Reputation: 318804

Your code is all wrong. It should be something like this:

UIBackgroundTaskIdentifier taskID = [application beginBackgroundTaskWithExpirationHandler:^{
    // Code to ensure your background processing stops executing
    // so it reaches the call to endBackgroundTask:
}];

// Put the code you want executed in the background here

if (taskID != UIBackgroundTaskInvalid) {
    [[UIApplication sharedApplication] endBackgroundTask:taskID];
}

Upvotes: 5

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