Declare static member variables like Java's in Objective-C

Question

How can I make an Objective-C class with class-level variables like this Java class?

public class test
{

    public static final String tableName = "asdfas";    
    public static final String id_Column = "_id";
    public static final String Z_ENT_Column = "Z_ENT";

}

I want to access them without making an instance, like:

String abc = test.tableName;

Answer 1

It looks like you want to create constants (since you are using final in your question). In Objective-C, you can use extern for that.

Do something like this:

1) Create a new Objective-C class named Constants.

2) In the header (.h) file:

extern const NSString *SERVICE_URL;

3) In the implementation (.m) file:

NSString *SERVICE_URL = @"http://something/services";

4) Add #import "Constants.h" to any class where you want to use it

5) Access directly as NSString *url = SERVICE_URL;

---

If you don't want to create constants and simply want to use static in Objective-C, unfortunately you can only use static in the implementation (.m) file. And they can be accessed directly without prefixing the Class Name.

For example:

static NSString *url = @"something";

I hope this helps.

Answer 2

Try it....

static NSString *CellIdentifier = @"reuseStaticIdentifier";

You can access direct value using synthesis property
or you can use NSUserDefaults for store and retrive value

Description

@interface MyClass : NSObject
+(NSString *)myFullName;
@end

Implementation :

#import "MyClass.h"

@implementation MyClass
static NSString *fullName = @"Hello World";

+(NSString *)myFullName{
  return fullName;
}
@end

Use:

#import "MyClass.h"

@implementation AppDelegate

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification{
  NSLog(@"%@",[MyClass myFullName]); //no instance but you are getting the value.
}

@end

Hope i helped.