The MFMailComposeViewController class provides a standard interface that manages the editing and sending of an email in iOS.
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The
MFMailComposeViewControllerclass provides a standard interface that manages the editing and sending of an email. You can use this view controller to display a standard email view inside your application and populate the fields of that view with initial values such as the subject, email recipients, body text, and attachments. The user can edit the initial contents you specify and choose to send the email or cancel the operation.
Using this interface does not guarantee immediate delivery of the corresponding email message. The user may cancel the creation of the message, and if the user does choose to send the message, the message is only queued in the Mail application outbox. This allows you to generate emails even in situations where the user does not have network access, such as in airplane mode. This interface does not provide a way for you to verify whether emails were actually sent.
Before using this class, you must always check to see if the current device is configured to send email at all using the canSendMail method. If the user’s device is not set up for the delivery of email, you can notify the user or simply disable the email dispatch features in your application. You should not attempt to use this interface if the canSendMail method returns NO.
To display the view managed by this view controller, you can use any of the standard techniques for displaying view controllers. However, the most common way to present this interface is do so modally using the presentModalViewController:animated: method. Figure 1 shows the view that is displayed when you present the mail composition interface, with some of the fields already filled in. For more information on displaying the views associated with view controllers, see View Controller Programming Guide for iOS.
Important: The view hierarchy of this class is private and you must not modify it. You can, however, customize the appearance of an instance by using the UIAppearance protocol. After presenting a mail compose view controller, your app cannot change the email content. The user can edit the content of a presented instance but the system ignores programmatic changes. If you want to set values for the content fields, do so before presenting the interface
