如何在 Xcode 6 中访问构建设置？
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How to access Build Settings in Xcode 6?
提问by Dean
There seems to be a lot of variations of how to access the Build Settings variables (i.e. to define the base URL of a web service for different Debugvs. Releaseenvironments).
似乎有很多如何访问生成设置变量的变化（即定义不同的Web服务的基础URLDebug与Release环境）。
I created a User-Defined variable in Project -> Building Settings, one for each environment. Let's call it WEB_SERVICE_BASE_URL.
我在 Project -> Building Settings 中创建了一个 User-Defined 变量，每个环境一个。让我们称之为WEB_SERVICE_BASE_URL。
How do I access it in the code? I'm using XCode 6 and Swift.
如何在代码中访问它？我正在使用 XCode 6 和 Swift。
I've tried this but it doesn't work
我试过这个，但它不起作用
let api_key = ${WEB_SERVICE_BASE_URL}
I've also tried this and it also doesn't work
我也试过这个，它也不起作用
let api_key = NSUserDefaults.standardUserDefaults().stringForKey("WEB_SERVICE_BASE_URL")
Any suggestions? This seems to be a often needed solution, it's so easy in Rails, but not so in iOS development.
有什么建议？这似乎是一个经常需要的解决方案，它在 Rails 中很容易，但在 iOS 开发中则不然。
回答by Albert Bori
Here's how to set it up:
设置方法如下：
- Add a User-Defined setting to your target's
Build Settings(which you did withWEB_SERVICE_BASE_URL) - Add a new row to your target's
Info.plistfile with key:WEB_SERVICE_BASE_URL, type:String, value:${WEB_SERVICE_BASE_URL}
- 将用户定义的设置添加到您的目标
Build Settings（您使用WEB_SERVICE_BASE_URL） Info.plist使用 key:WEB_SERVICE_BASE_URL, type:String, value:在目标文件中添加一个新行：${WEB_SERVICE_BASE_URL}
Here's how get the value:
以下是获取值的方法：
let api_key = Bundle.main.object(forInfoDictionaryKey: "WEB_SERVICE_BASE_URL") as? String
Note: These keys/values can be extracted from the package, so be sure to avoid storing sensitive data in there.
注意：这些键/值可以从包中提取，所以一定要避免在那里存储敏感数据。
