Xcode - 无法采用协议

Question

对此的帮助将非常感激.

我想从iOS中的应用程序中发送短信.

在Xcode中,我做了以下事情:

在Link Binary With Library中添加了一个引用:

MessageUI.framework

在ViewController.swift中我添加了导入:

import MessageUI

但是,当我尝试添加委托时......

class ViewController: UIViewController, MFMessageComposeViewControllerDelegate {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


}

我收到此错误:

类型'ViewController'不符合协议'MFMessageComposeViewControllerDelegate'

---

更新

按照安东尼奥的建议解决.我补充说:

func messageComposeViewController(controller: MFMessageComposeViewController!, didFinishWithResult result: MessageComposeResult) {
}

Answer 1

这意味着您尚未实现协议中定义的方法.查看文档以了解您必须实现的内容.

在这种情况下,它只是一种方法:

func messageComposeViewController(_ controller: MFMessageComposeViewController!, didFinishWithResult result: MessageComposeResult)