Action sheet doesn't display when the MFMailComposeViewController's cancel button is tapped

Question

I\'m trying to incorporate MFMailComposeViewController in my app. When I present it modally, the send button works fine and the email is sent, which implies tha

Answer 1

Method

(void)mailComposeController:(MFMailComposeViewController*)controller
        didFinishWithResult:(MFMailComposeResult)result
                      error:(NSError*)error

is never called because you don't press any UIActionSheet button after cancelling, as it doesn't show on screen.

The reason this is happening is that the UIActionSheet appears off-screen. If you check the debug log you'll probably see a message saying Presenting action sheet clipped by its superview. Some controls might not respond to touches. On iPhone try -[UIActionSheet showFromTabBar:] or -[UIActionSheet showFromToolbar:] instead of -[UIActionSheet showInView:]."

That's why you see your view getting darker, but no UIActionSheet appears.

In my case, the problem was that my app is universal, but for some reason there was only one MainWindow.xib, and it was larger than the iPhone screen size (it was, in fact, the iPad screen size).

The solution is to create another MainWindow-iPhone.xib with the right dimensions and change the Info.plist entries called Main nib file base (iPad) and Main nib file base (iPhone) so that they point to the right file. Problem solved!

Hope it helps.