Background Fetch

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Background fetch is a new mode that lets your app appear always up-to-date with the latest information while minimizing the impact on battery. You could download feeds within fixed time intervals with this capability.

To get started:

1- Check Background Fetch in capabilities screen in Xcode.

2- In application(_:didFinishLaunchingWithOptions:) method in AppDelegate, add:




[[UIApplication shared] setMinimumBackgroundFetchInterval:UIApplicationBackgroundFetchIntervalMinimum]
Instead of UIApplicationBackgroundFetchIntervalMinimum, you could use any CGFloat value to set fetch intervals.

3- You must implement application(_:performFetchWithCompletionHandler:). Add that to your AppDelegate:


func application(_ application: UIApplication, performFetchWithCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
    // your code here

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