Хорошо, после обнаружения этого http://nshipster.com/swift-objc-runtime/ Я пробовал что-то подобное и мог достичь желаемого результата.
код выглядит следующим образом:
extension UIViewController {
public override class func initialize() {
struct Static {
static var token: dispatch_once_t = 0
}
// make sure this isn't a subclass
if self !== UIViewController.self {
return
}
dispatch_once(&Static.token) {
let originalSelector = #selector(UIViewController.viewWillAppear(_:))
let swizzledSelector = #selector(UIViewController.nsh_viewWillAppear(_:))
let originalMethod = class_getInstanceMethod(self, originalSelector)
let swizzledMethod = class_getInstanceMethod(self, swizzledSelector)
let didAddMethod = class_addMethod(self, originalSelector, method_getImplementation(swizzledMethod), method_getTypeEncoding(swizzledMethod))
if didAddMethod {
class_replaceMethod(self, swizzledSelector, method_getImplementation(originalMethod), method_getTypeEncoding(originalMethod))
} else {
method_exchangeImplementations(originalMethod, swizzledMethod)
}
}
}
// MARK: - Method Swizzling
func nsh_viewWillAppear(animated: Bool) {
self.nsh_viewWillAppear(animated)
NSLog("viewWillAppear: \(self)")
}
}