ios - 在 View Controller 和类之间进行委托(delegate)

Question

我想设置一个委托(delegate)来在 View Controller 和类之间进行通信。但是没有地方可以分配委托(delegate)，因为没有 prepareForSegue 类型的连接。我应该把委托(delegate)放在哪里，我应该如何实现代码？

代码如下:

Swift 中的协议(protocol):

@objc public protocol translationMadeDelegate: class {
    func didGetTranslation(translation:CGPoint)
}

在 Swift 的 viewDidLoad 中委托(delegate)初始化:

var delegate:translationMadeDelegate?
let trans:CGPoint = CGPointMake(100, 100)
self.delegate!.didGetTranslation(trans)

Objective-C 类委托(delegate)调用

- (void)didGetTranslation:(CGPoint *)translation {
    NSLog(@"cgpointed");
}

Answer 1

看看这段代码，它展示了实现应该如何进行

//Class

protocol translationMadeDelegate: class {
     func didGetTranslation(translation : CGPoint)
}

class someClass {
    weak var delegate: childViewControllerDelegate?

    func someMethodThatCallsDelegate(){
        let point = CGPoint(x: 10, y: 20)
        self.delegate?.didGetTranslation(point);
    }
}


//ViewController

class parentViewController: UIViewController, translationMadeDelegate {
    var classObj : someClass!

    override func viewDidLoad() {
        super.viewDidLoad()
        self.classObj = someClass()
        self.classObj.delegate = self
    }
    func didGetTranslation(translation : CGPoint){
        //do some stuff with translation
    }
}