僅須在MFMailComposeViewController

Question

我試圖使用MFMailComposeViewController設置，我設置了所有我想要設置的字段如下：

MFMailComposeViewController *message = [[MFMailComposeViewController alloc] init]; 
    [message setMessageBody:@"My message here" isHTML:NO]; 
    [message setToRecipients:[NSArray arrayWithObject:@"my@domain.com"]]; 
    [message setSubject:@"Request Info"]; 
    message.mailComposeDelegate = self; 

    // Present mail view controller on screen 
    UINavigationController *navController = (UINavigationController *)[[[[UIApplication sharedApplication] delegate] window] rootViewController]; 
    [navController presentViewController:message animated:YES completion:NULL]; 

然而，當郵件撰寫窗口出現這是唯一的場set是主體而沒有別的，主體，主體都是空的。我錯過了什麼？

Answer 1

在帶有郵件帳戶設置的真實設備上進行測試。