雖然發(fā)短信和發(fā)郵件都可以使用 openURL去處理，但使用MessageUI可以做到回調(diào)成功失敗，而且也非常簡單；

發(fā)郵件

- (void)viewDidLoad {
    [super viewDidLoad];
    
    if ([MFMailComposeViewController canSendMail]) {
        MFMailComposeViewController *controller = [[MFMailComposeViewController alloc] init];
        controller.mailComposeDelegate = self;
       
        [controller setSubject:@"主題"];
        [controller setToRecipients:@[@"shoujianren@qq.com"]];
        [controller setCcRecipients:@[@"chaosong@qq.com"]];
        [controller setBccRecipients:@[@"misong@qq.com"]];
        [controller setMessageBody:@"啥" isHTML:NO];
        
        NSString *path = [[NSBundle mainBundle] pathForResource:@"bg1" ofType:@"png"];
        [controller addAttachmentData:[NSData dataWithContentsOfFile:path] mimeType:@"png" fileName:@"附件"];
        
        [self presentViewController:controller animated:YES completion:nil];
    }
}

- (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(nullable NSError *)error {

    switch (result) {
        case MFMailComposeResultCancelled:
            NSLog(@"取消");
            break;

        case MFMailComposeResultSaved:
            NSLog(@"已保存");
            break;
            
        case MFMailComposeResultSent:
            NSLog(@"已發(fā)送");
            break;
            
        case MFMailComposeResultFailed:
            NSLog(@"發(fā)送失敗");
            break;
            
        default:
            break;
    }
}

發(fā)短信

- (void)viewDidLoad {
    [super viewDidLoad];
    
    if ([MFMessageComposeViewController canSendText]) {
        MFMessageComposeViewController *controller = [[MFMessageComposeViewController alloc] init];
        controller.messageComposeDelegate = self;
        
        controller.recipients = @[@"187********"];
        controller.body = @"晚飯吃了嗎？";
        
        [self presentViewController:controller animated:YES completion:nil];
    }
}

- (void)messageComposeViewController:(MFMessageComposeViewController *)controller didFinishWithResult:(MessageComposeResult)result {

    switch (result) {
        case MessageComposeResultCancelled:
            NSLog(@"取消");
            break;
            
        case MessageComposeResultSent:
            NSLog(@"已發(fā)送");
            break;
            
        case MessageComposeResultFailed:
            NSLog(@"發(fā)送失敗");
            break;
            
        default:
            break;
    }
}

1