How to Implement Singleton class in Swift

Question

I'm new to swift programming and please tell me how to implement singleton class in swift with code.

in obj-c I Know

+ (id)sharedManager {
   static MediaModel *sharedMyManager = nil;
   static dispatch_once_t onceToken;

   dispatch_once(&onceToken, ^{
      sharedMyManager = [[self alloc] init];
   });
   return sharedMyManager;
}

How is it in swift

Follow this url for singleton class http://codereview.stackexchange.com/questions/80246/swift-1-2-singleton-implementation — Lalit kumar, Nov 17 '15 at 13:49

score 3 · Accepted Answer · answered Nov 17 '15 at 13:48

3

It's so simple in Swift:

class YourClass {
    static let sharedInstance = YourClass()
}

and to use it:

YourClass.sharedInstance

answered Nov 17 '15 at 13:48

Drizztneko

161
7

Thanks Boss! Working Now – SUDHAKAR RAYAPUDI Nov 17 '15 at 14:18

score 1 · Answer 2 · answered Nov 17 '15 at 13:48

Swift is lot smarter than Obj-C about singleton class. You can declare like this;

final class MediaModel: NSObject {

    static let sharedMyManager = MediaModel()

    private override init() {
        super.init()
    }
}

Then call it;

let sharedManager = MediaModel.sharedMyManager

How to Implement Singleton class in Swift

2 Answers2