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func applicationDidEnterBackground(application: UIApplication) { | |
// Create a pseudo background task to system call applicationWillTerminate when app enter background | |
// Default system will not call applicationWillTerminate when app enter background | |
// applicationWillTerminate only called when user close app in app switcher or some special cases of system | |
bgTask = application.beginBackgroundTaskWithExpirationHandler({ () -> Void in | |
application.endBackgroundTask(self.bgTask) | |
self.bgTask = UIBackgroundTaskInvalid | |
}) | |
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)) { () -> Void in |
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/* | |
* Copyright (C) 2016 Evan Halley | |
* | |
* Licensed under the Apache License, Version 2.0 (the "License"); | |
* you may not use this file except in compliance with the License. | |
* You may obtain a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, software |
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