How do I wake up an app when it receives a notification?

How do I wake an app up or cause it to run code in the background when it receives a notification, whether local or remote?

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ShinehahGnolaum
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For remote notifications you need to enabled the content-available flag. Then use the completion handler to process it in the background. https://developer.apple.com/documentation/uikit/uiapplicationdelegate#//apple_ref/occ/intfm/UIApplicationDelegate/application:didReceiveRemoteNotification:fetchCompletionHandler:


Note you only have 30 seconds to process any background tasks.

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davidtruong
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