Crash On MFMailComposeViewController For iPad - email

Question

- (void) mailshareClick:(UIButton *)sender
{
NSString *_message = #"wait for set up Mail";
[self waitForWhile:_message];
if ([MFMailComposeViewController canSendMail]){
[NSThread detachNewThreadSelector:#selector(mailFunction) toTarget:self withObject:nil];
}
else {
_message = #"Please set Mail account";
[self remove:_message];
}
}
- (void) mailFunction
{
NSData *data = nil;
if ([self.files.imageArr count]>0)
{
XXImage *single = [self.files.imageArr objectAtIndex:0];
UIImage *image = [[SDImageCache sharedImageCache] imageFromKey:[[single.imagearray objectAtIndex:0] columnImage]];
data = [UIImageJPEGRepresentation(image, 1.0f) retain];
}
[self performSelectorOnMainThread:#selector(mailFinished:) withObject:data waitUntilDone:YES];
[data release];
}
- (void) mailFinished:(NSData *)_data
{
if ([MFMailComposeViewController canSendMail]){
NSData *data = [_data retain];
MFMailComposeViewController *message = [[MFMailComposeViewController alloc] init];
//Title
[message setSubject:self.files.title];
//Body
[message setMessageBody:#"111" isHTML:YES];
[message setToRecipients:[NSArray arrayWithObject:#"mail"]];
//Content
if (data != nil) {
NSString *picStr = [[NSString alloc] initWithFormat:#"%#%#",OutsideWebsite_Normal,self.files.middlePicPath];
[message addAttachmentData: data mimeType: #"" fileName:picStr];
[picStr release];
[data release];
}
message.mailComposeDelegate = self;
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
{
message.modalPresentationStyle = UIModalPresentationFormSheet;
}
[self presentModalViewController:message animated:YES];
[self remove:#"Set up Ok"];
[message release];
}
}
- (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error
{
switch (result) {
case MFMailComposeResultSent:
{
NSLog(#"MFMailComposeResultSent");
break;
}
case MFMailComposeResultSaved:
{
NSLog(#"MFMailComposeResultSaved");
break;
}
case MFMailComposeResultFailed:
{
NSLog(#"MFMailComposeResultFailed");
break;
}
case MFMailComposeResultCancelled:
{
NSLog(#"MFMailComposeResultCancelled");
break;
}
default:
break;
}
[self performSelector:#selector(delayDismissModalView) withObject:nil afterDelay:1];
}
-(void)delayDismissModalView
{
[self dismissModalViewControllerAnimated:YES];
}
After invoke a few times the email method , there will be
[MFSearchResultsViewController hash]: message sent to deallocated instance
Or
[MFMailComposeViewController hash]: message sent to deallocated instance
crash.
As you think of that, what is the MFSearchResultsViewController function.
Whether it can solve the problem,please give me a hand.

Answer 1

You have to setDelegate for the mail controller. If you set the delegate to "self", make sure that the "self" has <MFMailComposeViewControllerDelegate>. If all these can't make it work, make sure you didn't call presentModalViewController twice.