问题
Right I am developing an app that has two lots of settings Dev and Live. Is there a way to distinguish which lot of settings should be used based on whether the app is live or still in development or do I have to change the whole settings files before it goes live.
I was unsure on how to put this so if your not sure place just ask.
回答1:
What you want to do is define a Preprocessor Macro based on your build configuration. So if you have a build configuration called dev and one called live you would define a different value for dev and live.
To implement this go into your apps build settings in Xcode and search for "Preprocessor Macros". Add a macro for each build target.
For dev you could add:
APP_CONFIG=0
And for live you could add:
APP_CONFIG=1
Then in your code you are able to distinguish between dev and live build configurations by a simple if statement:
#if APP_CONFIG == 0
NSLog(@"This is the dev build.");
#else
NSLog(@"This is the live build.");
#endif
来源：https://stackoverflow.com/questions/8743914/settings-bundle-for-iphone-app