如何获取用户的国家/地区信息 [英] How to get user's country information
问题描述
基本上我需要在应用程序启动时识别用户的国家/地区，并根据他/她的国家/地区在我的应用中启用或停用基于位置的功能。我需要在RootViewController加载之前在应用程序委托中尽快完成此操作。无论如何在iPhone SDK中执行此操作？
Basically I need to identify the user's country at application startup and enable or disable a location based feature in my app based on his/her country. I need to do this as quickly as possible in the application delegate prior to the RootViewController's loading. Is there anyway of doing this in the iPhone SDK??
推荐答案
您是否需要设备所在国家/地区的名称？应用程序运行时位于？
Do you need the name of the country that the device is physically located in while the app is running?
或者您可以使用设备使用的系统区域设置，例如en_US或fr_CA吗？
Or could you make do with the system locale the device is using such as en_US or fr_CA ?
如果是后者，你可以：
NSLocale *currentUsersLocale = [NSLocale currentLocale];
NSString *currentLocaleID = [currentUsersLocale localeIdentifier];`
然后 currentLocaleID 将en_US或fr_CA或类似。
否则，您需要使用CoreLocation和某种形式的反向地理编码器将您的纬度/经度转换为国家/地区名称。
Otherwise you'll need to use CoreLocation and some form of Reverse Geocoder to convert your lat/long into a country name.
MKReverseGeocoder可以做到这一点但是服务条款说你需要和谷歌地图一起做这件事，这可能不适合你。仅适用于OS 3.0及更高版本，请搜索 MKReverseGeocoder 的文档以获取更多信息。
MKReverseGeocoder can do this but the terms of service say you need to be doing it in conjunction with a Google map which may not suit you. Only available on OS 3.0 and above, search the documentation for MKReverseGeocoder for more info.
我自己需要这个并最终在PHP中进行地理编码在我们的服务器上，使用设备IP地址。这是基本的，但为我们提供了足够的详细信息。
I needed this myself and ended up doing Geocoding in PHP on our server, using the device IP address. It's rudimentary, but gave us enough detail for our needs.
查看这个网络服务： http://ws.geonames.org/findNearby?lat=47.3&lng=9
哪个返回带有国家和附近地名的XML文档，给定一个lat / lng对。
Check out this web service: http://ws.geonames.org/findNearby?lat=47.3&lng=9
Which returns an XML doc with country and nearby place names given a lat/lng pair.
该方法依赖于具有活动数据连接的设备。
That approach relies on the device having an active data connection though.
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