Static NSArray of strings - how/where to initialize in a View Controller

Question

In a Master-Detail app I\'d like to display a TableView with 5 sections titled:

1. Your Move
2. Their Move
3. Won Games
4. Lost Games
5. O

Answer 1

You can't instantiate objects in this way, you can only declare them in interfaces. Do the following:

static NSArray *_titles_2;

@interface MasterViewController () {
    NSMutableArray *_games;
}
@end

@implementation MasterViewController
-(void)viewDidLoad()
{
     _titles_2 = @[
                         @"Your Move",
                         @"Their Move",
                         @"Won Games",
                         @"Lost Games",
                         @"Options"
    ];
}
@end

• or likewise you could use the viewcontroller init method instead of viewDidLoad

Answer 2

I prefer to use Objective-C++,change filename from xxx.m to xxx.mm,and the initialize of NSArray will happen at runtime

no dispatch_once,no class method,just write it in one line:

static NSArray *const a = @[@"a",@"b",@"c"];

Answer 3

Write a class method that returns the array.

+ (NSArray *)titles
{
    static NSArray *_titles;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        _titles = @[@"Your Move",
                    @"Their Move",
                    @"Won Games",
                    @"Lost Games",
                    @"Options"];
    });
    return _titles;
}

Then you can access it wherever needed like so:

NSArray *titles = [[self class] titles];