MFMailComposeViewController没有被解雇

Question

我已经在我的代码中实现了MFMessageComposeViewController，但是我现在可以发送电子邮件，在保存草稿，删除草稿甚至发送电子邮件时，视图控制器都不会被解雇。我也尝试过添加断点和代码来解雇它甚至不会运行。

- (IBAction)sendEmail:(id)sender {

Class mailClass = (NSClassFromString(@"MFMailComposeViewController"));

if(mailClass != nil)
{
    if ([mailClass canSendMail])
    {
        [self displayComposerSheet];
    }
    else 
    {
        [self launchMailAppOnDevice];
    }

}
else
{
    [self launchMailAppOnDevice];
}
}

- (void)displayComposerSheet
{
MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];

NSArray *toRecipients = [NSArray arrayWithObject:@"foomail@foo.foo"];

[picker setEditing:YES];
[picker setToRecipients:toRecipients];

[self presentModalViewController:picker animated:YES];
picker.mailComposeDelegate = self;
}

- (void)launchMailAppOnDevice
{
NSString *address = @"mailto:enquiries@moray.it";

NSString *email = [NSString stringWithFormat:@"%@", address];
email = [email stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:email]];
 }

-(void)mailComposeController:picker didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error 
{
[self dismissModalViewControllerAnimated:YES];
}

Answer 1

在调用presentModalViewController之前尝试设置委托。

Answer 2

在展示模态视图之前尝试设置picker.mailComposeDelegate = self。 它可能会帮助你。