Objective-C Split()?

NSArray *arrayOfComponents = [yourString componentsSeparatedByString:@":"];

where yourString contains @"one:two:three"

and arrayOfComponents will contain @[@"one", @"two", @"three"]

and you can access each with NSString *comp1 = arrayOfComponents[0];

(https://developer.apple.com/documentation/foundation/nsstring/1413214-componentsseparatedbystring)