/ Select

Swizzle selectors with just one clean and elegant API

Swizzle selectors with just one clean and elegant API

SwizzleSwift

Who said that method swizzling needs to look ugly? SwizzleSwift is a little wrapper that lets you swizzle selectors just one clean and elegant API.

Installation

Pods

pod 'SwizzleSwift'

Swift package manager

From Xcode, select File → Swift Packages → Add Package Dependency → Select your project → Search SwizzleSwift

Usage example

Swizzle(<#AType.Self#>) {
	<#OriginalSelector#> ==> <#SwizzledSelector#>
}

Given the following controller

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        print(#function)
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        print(#function)
    }

}

extension UIViewController {

    @objc private func myViewDidLoad() {
        print(#function)
        myViewDidLoad()
    }
    
    @objc private func myViewWillAppear(_ animated: Bool) {
        print(#function)
        myViewWillAppear(animated)
    }
    
}

Swizzling the methods like this

extension UIViewController {

    @objc static func methodSwizzling() -> Void {
        Swizzle(ViewController.self) {
            #selector(viewDidLoad) ==> #selector(myViewDidLoad)
            #selector(viewWillAppear(_:)) ==> #selector(myViewWillAppear(_:))
        }
    }
    
}

Will produce the following output

myViewDidLoad()
viewDidLoad()
myViewWillAppear(_:)
viewWillAppear(_:)

GitHub