3分钟后，后台执行将自动停止 [英] Background execution automatically stops after 3 minutes

问题描述

我想将照片上传为后台任务，但是后台执行会在3分钟后自动停止.

I wanted upload photos as background task but background execution stops automatically after 3 minutes.

我完成的代码:

- (void)applicationDidEnterBackground:(UIApplication *)application
{
   UIApplication *app = [UIApplication sharedApplication];

    bgTask = [app beginBackgroundTaskWithExpirationHandler:^{
    //Stop upload call

    [app endBackgroundTask:bgTask];
    bgTask = UIBackgroundTaskInvalid;
}];
}}

推荐答案

我发现iOS严格限制了运行时间.具体来说:

I found that iOS puts strict limits on how long you can run. Specifically:

从前景移到背景时，当前限制为3分钟. 当您在后台恢复时，限制为30秒.

When you move from the foreground to the background, the limit is currently 3 minutes. When you are resumed in the background, the limit is 30 seconds.

链接推介: https://krumelur.我/2015/11/25/ios-background-transfer-what-about-uploads/

感谢@feroz提供链接.

Thanks @feroz for providing the link.

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