停止位置更新应用时终止 [英] Stop location updates when app terminate

问题描述

我发展，你都在附近的地方提拔当它发送通知的应用程序。
我的问题是，当我去后台，然后我退出程序，我不希望定位服务工作时，应用程序无法正常工作（但我希望他们能够在后台运行）。

I'm developing an app which sends notifications when you are nearby of promoted places. My problem is when I go to background and then I quit the app, I don't want the location services working when the app doesn't work (but I want them to work in background).

我只看到3应用程序时应用程序被关闭而关闭GPS，我想知道他们是怎么做的，Facebook，谷歌地图和苹果地图，不四方，不实地考察...

I saw only 3 apps which close the gps when the app is closed and I want to know how they did that, Facebook, Google Maps and Apple Maps, not Foursquare, not FieldTrips...

感谢您大家。

推荐答案

我找到了正确的回答我的问题becouse @GuyS第二个职位的：

I found the correct answer to my question becouse of @GuyS second post:

添加在你AppDelegate.m applicationDidEnterBackground

Adding that in your AppDelegate.m applicationDidEnterBackground

- (void)applicationDidEnterBackground:(UIApplication *)application
{
    UIApplication *app = [UIApplication sharedApplication];
    if ([app respondsToSelector:@selector(beginBackgroundTaskWithExpirationHandler:)]) {
        bgTask = [app beginBackgroundTaskWithExpirationHandler:^{
            // Synchronize the cleanup call on the main thread in case
            // the task actually finishes at around the same time.
            dispatch_async(dispatch_get_main_queue(), ^{
                if (bgTask != UIBackgroundTaskInvalid)
                {
                    [app endBackgroundTask:bgTask];
                    bgTask = UIBackgroundTaskInvalid;
                }
            });
        }];
    } 
}

和声明变量：

UIBackgroundTaskIdentifier bgTask;

之后，你只需要在applicationWillTerminate ...

After that you only have to stop your location services in applicationWillTerminate...

感谢您的答复。

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