我正在尝试从Xcode 6在iOS 8中打开邮件创作，但是出现了错误。如果我使用Xcode 5尝试相同的代码，则可以正常工作。后来我从苹果开发者门户网站下载了一个示例代码：
https://developer.apple.com/library/content/samplecode/MessageComposer/Introduction/Intro.html
但结果是一样的。我是否错过了什么或某些设置，以使代码针对Xcode 6进行优化？
以下是我的按钮操作中的代码：
MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
picker.mailComposeDelegate = self;
[picker setSubject:@"Hello from California!"];
// Set up recipients
NSArray *toRecipients = [NSArray arrayWithObject:@"first@example.com"];
NSArray *ccRecipients = [NSArray arrayWithObjects:@"second@example.com", @"third@example.com", nil];
NSArray *bccRecipients = [NSArray arrayWithObject:@"fourth@example.com"];
[picker setToRecipients:toRecipients];
[picker setCcRecipients:ccRecipients];
[picker setBccRecipients:bccRecipients];
// Attach an image to the email
NSString *path = [[NSBundle mainBundle] pathForResource:@"rainy" ofType:@"jpg"];
NSData *myData = [NSData dataWithContentsOfFile:path];
[picker addAttachmentData:myData mimeType:@"image/jpeg" fileName:@"rainy"];
// Fill out the email body text
NSString *emailBody = @"It is raining in sunny California!";
[picker setMessageBody:emailBody isHTML:NO];
[self presentViewController:picker animated:YES completion:NULL];
电子邮件代表
self.feedbackMsg.hidden = NO;
// Notifies users about errors associated with the interface
switch (result)
{
case MFMailComposeResultCancelled:
self.feedbackMsg.text = @"Result: Mail sending canceled";
break;
case MFMailComposeResultSaved:
self.feedbackMsg.text = @"Result: Mail saved";
break;
case MFMailComposeResultSent:
self.feedbackMsg.text = @"Result: Mail sent";
break;
case MFMailComposeResultFailed:
self.feedbackMsg.text = @"Result: Mail sending failed";
break;
default:
self.feedbackMsg.text = @"Result: Mail not sent";
break;
}
[self dismissViewControllerAnimated:YES completion:NULL];
结果:
电子邮件组成代表在结果为0时自动消失，即MFMailComposeResultCancelled
带错误代码：MessageComposer[10993:196902] viewServiceDidTerminateWithError: 错误 Domain=_UIViewServiceInterfaceErrorDomain Code=3 "操作无法完成。 （_UIViewServiceInterfaceErrorDomain错误3。）" UserInfo=0x7b93f7e0 {Message=服务连接中断}
和
2014-09-17 22:04:22.538 MessageComposer[10993:205761] 等待来自com.apple.MailCompositionService的栅栏屏障超时