Menu
I need to create a singleton class in Swift. Can anyone help me with the code? I already know that singleton classes are very helpful in creating generic code.
884
In this tutorial, we will learn about Swift Singleton with the help of examples. In Swift, Singleton is a design pattern that ensures a class can have only one object. Such a class is called singleton class. 1. Create a private initializer
Singletons can be very helpful if you need one instance of a class present throughout your entire app. With the increased RAM inside of our devices, singletons can help make our code more organized without having to worry about memory issues and crashes. To create a singleton, we must create an instance of the class inside of the class itself.
Such a class is called singleton class. 1. Create a private initializer An initializer allows us to instantiate an object of a class. And, making the initializer of a class restricts the object creation of the class from outside of the class. Here, the initializer of the FileManager class is private.
Singleton is a design pattern that is very popular in development. Most of the developers are using this design pattern. This is very simple, common and easy to use in your project. It initializes your class instance single time only with static property and it will share your class instance globally.
There are many ways to create a Singleton Class in Swift. I am sharing with you one of the ways to implement this.
Write below code in Singleton Class.
import UIKit
final class GlobalData: NSObject {
static let sharedInstance = GlobalData()
private override init() { }
func foo() { }
}
To access Singleton Class referencefrom other class:
let glblData = GlobalData.sharedInstance
OR access method directly
GlobalData.sharedInstance.foo()
Now we can use glblData as a reference to your singleton Class.
83
class Singleton {
static let sharedInstance = Singleton()
}
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
