Apple的核心位置提示-为什么它跳回到Root View控制器？ [英] Apple's core location prompt - why does it jump back to Root View controller?

问题描述

我有一个使用UINavigationController的iPhone应用程序。在堆栈的第四个控制器上，我正在执行一些Core Location任务-因此，在用户使用我的应用的前几次中，系统会询问他们是否可以使用Location Services。 （我认为）这一过程我无法控制。

I have an iPhone app using a UINavigationController. On the fourth controller of the stack, I'm doing some Core Location stuff - so, the first couples of times that the user uses my app, they are asked if it's ok to use Location Services. This is a process that (I think) I don't have any control over.

在用户确认后，它们实际上被撞回到了导航控制器堆栈中的我的根视图控制器。这是一个错误，我做错了什么，还是这种预期的行为？我希望用户能够继续使用第四个控制器，而不必重新导航到它。

After the user confirms, they are actually bumped back to my root view controller in the navigation controller stack. Is this a bug, am I doing something wrong, or is this expected behavior? I want the user to be able to continue on the fourth controller instead of having to re-navigate back to it.

如果可以预料的是，我想可以加入用户启动应用程序后立即定位服务，而不是在我的第四个View Controller中。

If it's expected behaivor, I suppose I could kick in the location services as soon as the user starts the app, instead of in my fourth View Controller.

推荐答案

问题是我将我所有的应用初始化代码都放在了applicationDidBecomeActive：消息中。用户决定允许使用位置服务后，将发送UIApplicationDidBecomeActiveNotification消息，从而导致调用applicationDidBecomeActive消息。

The problem is that I was putting all of my app initialization code in the applicationDidBecomeActive: message. After the user decides to allow location services to be used, an UIApplicationDidBecomeActiveNotification message is sent which causes the applicationDidBecomeActive message to be called.

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