ios - MFMailComposeViewController canSendMail 返回 YES 但不在 iOS 中发送邮件

Question

以下是我在邮件中发送附件的代码。这很好用。我可以发送邮件，但并不总能收到邮件。

MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
picker.mailComposeDelegate = self;

// Set the subject of email
[picker setSubject:@"My data file"];

// Add email addresses

[picker setToRecipients:[NSArray arrayWithObjects:emailId, nil]];


// Fill out the email body text
NSString *emailBody = @"Hello, \n Please find the data from the iOS app in the attachments.\n\n Thank you.\nMy Team.";

// This is not an HTML formatted email
[picker setMessageBody:emailBody isHTML:NO];

// Create NSData object from file
NSData *exportFileData = [NSData dataWithContentsOfFile:filePath];

// Attach image data to the email
[picker addAttachmentData:exportFileData mimeType:@"text/csv" fileName:  [self.CSVNameTextField text]];


// Show email view

if ([MFMailComposeViewController canSendMail]) {

    [self presentModalViewController:picker animated:YES];
}

Answer 1

使用应用程序发送邮件后，转到 iPhone 上的邮件软件，您很可能会在发件箱中找到邮件。

因为 MFMailComposeViewController 只会将 Mail 转发给 Mail-Software，它并不关心消息接下来会发生什么。因此，发件箱更新的方式和时间取决于您的邮件软件。