Dismissing modal view controller after sending email with MFMailComposeViewController

Question

I have a view controller presented modally to let people sign up for a newsletter that then calls MFMailComposer. Once the mail is sent, I want to be able to dismiss the modal view controller after I click Send on the email window. Is this possible?

This was incorrectly marked a duplicate because my code is structured as follows:

CustomViewController calls ModalViewController ModalViewController calls MailComposer After user clicks send the ModalViewController needs to be dismissed.

Tamás Sengel · Answer 1 · 2017-12-29T00:08:06.593

0

You should dismiss the controller in mailComposeController(_:didFinishWith:error:) after you checked that the MFMailComposeResult is sent.

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

    if result == .sent {
        dismiss(animated: true)
    }
}

Remember that you should set the delegate of the mail compose view controller and your view controller should conform to the MFMailComposeViewControllerDelegate protocol:

class CustomViewController: UIViewController, MFMailComposeViewControllerDelegate {
    fileprivate var mailComposeVc: MFMailComposeViewController!
    [...]

    func someFunc() {
        mailComposeVc.delegate = self
    }
}

edited Dec 29 '17 at 00:08

answered Dec 29 '17 at 00:02

Tamás Sengel

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The correct way is to switch the result inside the completion handler of the dismiss method – Leo Dabus Dec 29 '17 at 00:10
@LeoDabus Switching is not mandatory if the OP wants to handle just one result, although it can be useful for debugging purposes. Also, I am interested in what advantages does handling the dismissal of the view controller inside the completion handler of the dismiss method have. – Tamás Sengel Dec 29 '17 at 00:15
It only executes the code once the dismiss animation is complete – Leo Dabus Dec 29 '17 at 00:17
@LeoDabus Of course, that's obvious. I'm just asking whether waiting for the animation is necessarily a good thing. – Tamás Sengel Dec 29 '17 at 00:18
It is just about displaying it properly – Leo Dabus Dec 29 '17 at 00:20
Thank you the if result == .sent portion is what I needed. – Marcus Houpt Dec 31 '17 at 17:56

Dismissing modal view controller after sending email with MFMailComposeViewController

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