Corelocation和辅助GPS iPhone [英] Corelocation and assisted gps iPhone

问题描述

我有一个简单的问题，iOS 4.3.2的核心位置是否自动使用辅助GPS，或者您需要选择这个选项。

我工作正常与GPS和我重新找到解决时间，然后找到一个很好的准确性（低于10米）是相当长的 - 几分钟。

问候

Bjarke

解决方案

全都是自动的。您可以做的最好的办法是检查海拔高度，当GPS定位尚不可用时，海拔高度是未定义的。

编辑：请参阅 http://developer.apple.com/library/mac/#documentation/CoreLocation/Reference /CLLocation_Class/CLLocation/CLLocation.html

if verticalAccuracy< 0，高度是无效的（从中你可以推断没有GPS定位）

I have a quick question, does the core location in iOS 4.3.2 automatically use assisted gps or is this an option you need to choose.

I am working with the GPS and I recon that the settle time before finding a good accuracy(below 10 meters) is rather long - a few minuts.

Regards

Bjarke

解决方案

It's all automatic. The best you can do is check the altitude, which is undefined when a GPS fix is not available yet.

edit: see http://developer.apple.com/library/mac/#documentation/CoreLocation/Reference/CLLocation_Class/CLLocation/CLLocation.html

if verticalAccuracy < 0, altitude is invalid (from which you can infer no GPS fix)

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