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ViewsAdding variables at build time in Xcode
I have some dynamic values I need to change based on the type of build I am doing in Xcode.
I have created 2 schemes DEV and PROD and set environment variables in each
I then consume these in code as follows
var serviceDomain: String {
let envVar = ProcessInfo.processInfo.environment
guard let value = envVar["APP_SERVICE_DOMAIN"] else { fatalError("Missing APP_SERVICE_DOMAIN enviroment variable") }
return value
}
Is this the correct way to approach this?
Once an app is compiled, should these values now be bundled with it?
I have an issue in that once I've stopped my simulator, if I try to open an app built this way, it crashes and I suspect the environment variables aren't present anymore.
In short, I would like a build for dev that uses one set of variables and a build for release / production that uses another.
1 answers
Answer question0
You don't need environment variables at all!
Go to build settings and search for active compilation conditions:
Add DEBUG for Debug and RELEASE for Release as I have done here.
Then declare your variables. Let's say you want a to be 1 in release mode, and 2 in debug mode,
#if RELEASE
let a = 1
#elseif DEBUG
let a = 2
#endif
And that's it!
The compiler will choose one of the values to compile, depending on your scheme's Build Configuration. Here, it is debug, so 2 will be used:
