Crashing in MFMailComposeViewController implementation - mfmailcomposer

Question

My app crashes when I try to perform sent or cancel button actions in MFMailComposeViewController.
here is my code.
I have imported message framework and added delegates in .h file.
NSString *emailTitle = #"Test Email";
NSString *messageBody = #"Welcome Guest";
NSArray *recipentsArray = [[NSArray alloc]initWithObjects:#"xxx#gmail.com", nil];
[[UINavigationBar appearance] setBackgroundImage:nil forBarMetrics:UIBarMetricsDefault];
[[UINavigationBar appearance] setBackgroundColor:nil];
MFMailComposeViewController *mc = [[MFMailComposeViewController alloc] init];
mc.mailComposeDelegate = self;
[mc setSubject:emailTitle];
[mc setMessageBody:messageBody isHTML:NO];
[mc setToRecipients:recipentsArray];
[self presentViewController:mc animated:YES completion:NULL];(void) mailComposeController:(MFMailComposeViewController *)controller
didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error
{
switch (result)
{
case MFMailComposeResultCancelled:
NSLog(#"Mail cancelled");
break;
case MFMailComposeResultSaved:
NSLog(#"Mail saved");
break;
case MFMailComposeResultSent:
NSLog(#"Mail sent");
break;
case MFMailComposeResultFailed:
NSLog(#"Mail sent failure: %#", [error localizedDescription]);
break;
default:
break;
}
// Close the Mail Interface
[self dismissViewControllerAnimated:YES completion:NULL];
}
This is how my mf mail composer looks like :----

Answer 1

Just make the MFMailComposeViewController *mc in global.
I mean declare it outside this method. It's crashing because at the end of method Your mc gets deallocated.
Interface
#interface Demo()
{
MFMailComposeViewController *mc;
}
#end
Implementation
-(void)ShareViaEmail {
objMailComposeController = [[MFMailComposeViewController alloc] init];
objMailComposeController.mailComposeDelegate = self;
if ([MFMailComposeViewController canSendMail]) {
[objMailComposeController setSubject:#"Hello"];
[objMailComposeController setMessageBody:#"This is Body of Message" isHTML:NO];
NSData *ImageData = [NSData dataWithContentsOfFile:self.aStrSourceName];
NSString *mimeType;
if ([[self CheckExtensionOfURL:self.aStrSourceName]isEqualToString:#"Image"]) {
mimeType = #"image/png";
}
else if ([[self CheckExtensionOfURL:self.aStrSourceName]isEqualToString:#"PDF"]) {
mimeType = #"application/pdf";
} else if ([[self CheckExtensionOfURL:self.aStrSourceName]isEqualToString:#"Audio"]) {
mimeType = #"audio/mpeg";
} else if ([[self CheckExtensionOfURL:self.aStrSourceName]isEqualToString:#"Video"]) {
mimeType = #"video/mp4";
}
[objMailComposeController addAttachmentData:ImageData mimeType:mimeType fileName:#"attachement"];
}
[self.navigationController presentViewController:objMailComposeController animated:YES completion:Nil];
}
- (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error {
switch (result) {
case MFMailComposeResultCancelled:
[self ShowAlertView:kMsgMailCancelled];
break;
case MFMailComposeResultFailed:
[self ShowAlertView:kMsgMailFailed];
break;
case MFMailComposeResultSaved:
[self ShowAlertView:kMsgMailSaved];
break;
case MFMailComposeResultSent:
[self ShowAlertView:kMsgSent];
break;
default:
break;
}
// CHECK OUT THIS, THIS MIGHT BE IN YOUR CASE
[self.navigationController dismissViewControllerAnimated:controller completion:nil];
}