Where to store global constants in an iOS application?

Question

Most of the models in my iOS app query a web server. I would like to have a configuration file storing the base URL of the server. It will look something like this:

Answer 1

1. I define global constant in YOURPROJECT-Prefix.pch file.
2. #define BASEURl @"http://myWebService.appspot.com/xyz/xx"

3. then anywhere in project to use BASEURL:

   NSString *LOGIN_URL= [BASEURl stringByAppendingString:@"/users/login"];
   

Updated: In Xcode 6 you will not find default .pch file created in your project. So please use PCH File in Xcode 6 to insert .pch file in your project.

Updates: For SWIFT

1. Create new Swift file [empty without class] say [AppGlobalMemebers]

2. & Right away declare / define member

   Example:

   var STATUS_BAR_GREEN : UIColor  = UIColor(red: 106/255.0, green: 161/255.0, blue: 7/255.0, alpha: 1)  //
   

   3. If you want to define the app global member in any class file say Appdelegate or Singleton class or any, declare given member above class definition