ios - CLLocationManagerDelegate 方法，locationManager :didUpdateLocations:

Question

我想获取我的 iOS 应用程序的当前地理位置，并在 CLLocationManagerDelegate 文档中查找方法 locationManager:didUpdateLocations: .在讨论部分，它提到 如果更新被推迟，或者如果多个位置在它们交付之前到达，则该数组可能包含其他条目。 我不太明白在什么情况下会进行更新延迟和我可能期望从附加条目中获得的其他位置数据。

我检查的示例代码仍然使用Deprecated方法locationManager:didUpdateToLocation:fromLocation: .

有人可以详细说明一下吗？

Answer 1

当应用程序在后台运行时，您可以推迟位置更新以节省电池生命周期:

In iOS 6 and later, you can defer the delivery of location data when your app is in the background. It is recommended that you use this feature in situations where your app could process the data later without any problems. For example, an app that tracks the user’s location on a hiking trail could defer updates until the user hikes a certain distance and then process the points all at once. Deferring updates helps save power by allowing your app to remain asleep for longer periods of time.

在这种情况下，该数组将包含多个位置，而不是只接收一个 CLLocation 的数组。