On iOS 3.0 and later you should use the MFMailComposeViewController
class, and the MFMailComposeViewControllerDelegate
protocol, that is tucked away in the MessageUI framework.
First add the framework and import:
#import <MessageUI/MFMailComposeViewController.h>
Then, to send a message:
MFMailComposeViewController* controller = [[MFMailComposeViewController alloc] init];
controller.mailComposeDelegate = self;
[controller setSubject:@"My Subject"];
[controller setMessageBody:@"Hello there." isHTML:NO];
if (controller) [self presentModalViewController:controller animated:YES];
[controller release];
Then the user does the work and you get the delegate callback in time:
- (void)mailComposeController:(MFMailComposeViewController*)controller
didFinishWithResult:(MFMailComposeResult)result
error:(NSError*)error;
{
if (result == MFMailComposeResultSent) {
NSLog(@"It's away!");
}
[self dismissModalViewControllerAnimated:YES];
}
Remember to check if the device is configured for sending email:
if ([MFMailComposeViewController canSendMail]) {
// Show the composer
} else {
// Handle the error
}
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…