ios - MFMailComposeViewController 在 iOS 7 下不工作

Question

[MFMailComposeViewController canSendMail] 在 iOS 6 应用程序下运行良好，但在 iOS7 下运行失败。

iOS 6 邮件功能:

if ([MFMailComposeViewController canSendMail])
{
    MFMailComposeViewController *mailer = [[MFMailComposeViewController alloc] init];
    mailer.mailComposeDelegate = self;
    [mailer setSubject:@"A Message from Bloomingkids"];
    NSArray *toRecipients = [NSArray arrayWithObjects:@"support@bloomingkids.com", nil];
    [mailer setToRecipients:toRecipients];
    UIImage *myImage = [UIImage imageNamed:@"bloomingKidsLogo.png"];
    NSData *imageData = UIImagePNGRepresentation(myImage);
    [mailer addAttachmentData:imageData mimeType:@"image/png" fileName:@"Images"];
    NSString *emailBody = @"Have you seen the Bloomingkids web site?";
    [mailer setMessageBody:emailBody isHTML:NO];
    [self presentViewController:mailer animated:YES completion:nil];
}
else
{
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Failure"
                                                    message:@"Your device doesn't support the composer sheet"
                                                   delegate:nil
                                          cancelButtonTitle:@"OK"
                                          otherButtonTitles: nil];
    [alert show];
}

注意:它可以在模拟器上运行，但不能在 iPad 上运行。错误是您的设备不支持 composer sheet

Answer 1

在您的设备中添加任何电子邮件帐户意味着设置一个电子邮件帐户...