iOS 13 后台杀掉

Question

如何解决这个问题:iOS 13 在应用程序进入后台后不断杀死应用程序实例。

UIApplication *application = [UIApplication performSelector:@selector(sharedApplication)];
__block UIBackgroundTaskIdentifier bgTask = [application beginBackgroundTaskWithExpirationHandler:^{
    // Clean up any unfinished task business by marking where you
    // stopped or ending the task outright.
    [application endBackgroundTask:bgTask];
    bgTask = UIBackgroundTaskInvalid;
}];

// Start the long-running task and return immediately.
[self deleteOldFilesWithCompletionBlock:^{
    [application endBackgroundTask:bgTask];
    bgTask = UIBackgroundTaskInvalid;
}];

Answer 1

我想这是因为你正在尝试调用 bgTask

[application endBackgroundTask:bgTask];

并改变它

bgTask = UIBackgroundTaskInvalid;

在其定义内。

尝试将其分为两个不同的操作 - bgTask 定义和 bgTask 调用和更改。