CODEWITHSUNDEEP
iosswift
lucgian841
lucgian841

Reputation: 2002

MFMailComposeViewControllerDelegate not conform to protocol NSObjectProtocol

I'm trying to send an email from my app using MFMailComposeViewControllerI made so:

func sendMail() {
        if (MFMailComposeViewController.canSendMail()) {
            let mail = MFMailComposeViewController()
            mail.mailComposeDelegate = self
            mail.setToRecipients([self.customerMail?.first ?? ""])

        } else {

        }
    }

so I've to add the protocol MFMailComposeViewControllerDelegate and I made so:

extension MyViewController: MFMailComposeViewControllerDelegate {
    func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?) {

    }
}

so why the compiler asked me to add NSObjectProtocol if I look at Apple documentation I saw that MFMailComposeViewControllerDelegate has only one method in his protocol, so why I should add all of these delegate:

extension CustomersDetailPresenter: MFMailComposeViewControllerDelegate {
    func isEqual(_ object: Any?) -> Bool {
        <#code#>
    }

    var hash: Int {
        <#code#>
    }

    var superclass: AnyClass? {
        <#code#>
    }

    func `self`() -> Self {
        <#code#>
    }

    func perform(_ aSelector: Selector!) -> Unmanaged<AnyObject>! {
        <#code#>
    }

    func perform(_ aSelector: Selector!, with object: Any!) -> Unmanaged<AnyObject>! {
        <#code#>
    }

    func perform(_ aSelector: Selector!, with object1: Any!, with object2: Any!) -> Unmanaged<AnyObject>! {
        <#code#>
    }

    func isProxy() -> Bool {
        <#code#>
    }

    func isKind(of aClass: AnyClass) -> Bool {
        <#code#>
    }

    func isMember(of aClass: AnyClass) -> Bool {
        <#code#>
    }

    func conforms(to aProtocol: Protocol) -> Bool {
        <#code#>
    }

    func responds(to aSelector: Selector!) -> Bool {
        <#code#>
    }

    var description: String {
        <#code#>
    }

    func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?) {

    }
}

What's wrong? And why I should add all of these delegate that I don't need to use? If I've to use this delegate what I should insert in the delegates who need a return value? Thank you

Upvotes: 1

Views: 261

Answers (1)

Scriptable
Scriptable

Reputation: 19750

Where ever you use MFMailComposeViewControllerDelegate, The class your stating conforms to MFMailComposeViewControllerDelegate also needs to conform to NSObjectProtocol.

You can just inherit from NSObject to fix this.

class CustomersDetailPresenter: NSObject

class MyViewController: UIViewController, NSObject

Upvotes: 2

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