How to manage dynamic NSString variable?

[ersentekin]

Hey all faslaners,
How to manage dynamic NSString variable for different types of deliveries like Development, Stage & Production environments?

Is there any kind of lane action to use?

Thanks so much!

[KrauseFx]

You can pass preprocessor macros when building, not sure how the majority of fastlane users solve this issue.

[milch]

You can pass additional arguments to be used as preprocessor macro when building your ipa like this:

server_url = '@\"http://beta.example.org\"'
ipa (
# ...
xcargs: "GCC_PREPROCESSOR_DEFINITIONS='$(inherited) X_SERVER_URL=#{url}'"
)

(it's important to have that $(inherited) in there so flags that are set by Xcode are set correctly)

And then in your code:

#ifdef X_SERVER_URL
    kServerBaseUrl = [NSURL URLWithString:X_SERVER_URL];
#else
    // Handle the case where no server URL is passed in from the build, e.g. on a developer machine
    // ... 
#endif

Of course, you can use as many preprocessor macros as you want.

[ersentekin]

@KrauseFx & @milch
Thanks so much, macros probably the best choice 👍

[KrauseFx]

Thanks again @milch for providing the solution 👍

[mortenholmgaard]

Use this in swift:
xcargs: "OTHER_SWIFT_FLAGS='$(inherited) -DVARNAME=1'"

[ersentekin]

@mortenholmgaard thanks for Swift support ! 🐤