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(_:)