如何在 Xcode 中的应用程序内发送电子邮件？答案

【问题标题】：How to send an E-Mail inside of an app in Xcode?如何在 Xcode 中的应用程序内发送电子邮件？
【发布时间】：2013-06-22 11:11:48
【问题描述】：

我是 xcode 的新手，想知道如何在应用程序中发送电子邮件！我的代码在下面，但我不断收到错误消息“'jakem' 没有可见的@interface 声明选择器'presentViewControllerAnimated:'”。我的代码完全错误吗？还是我只是忘记声明选择器，如何声明选择器？我已经在互联网上研究了至少一个小时，但没有任何效果。有人请帮助我！

    -(IBAction)sendEmail{

    MFMailComposeViewController *composer = [[MFMailComposeViewController alloc] init];
    [composer setMailComposeDelegate:self];
    if ([MFMailComposeViewController canSendMail]) {
    [composer setToRecipients:[NSArray          arrayWithObjects:@"FrankMurphy.CEO@RomansXIII.com", nil]];
    [composer setModalTransitionStyle:UIModalTransitionStyleCrossDissolve];
    [self presentViewController:composer animated:YES];

    }

    }

    -(void)mailComposeController:(MFMailComposeViewController *)controller   didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error {
    if(error) {
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"error" message:[NSString    stringWithFormat:@"error %@", [error description]] delegate:nil cancelButtonTitle:@"dismiss" otherButtonTitles:nil, nil];
    [alert show];
    [self dismissViewControllerAnimated:YES];
    }
    else {
    [self dismissViewControllerAnimated:YES];
    }
    }

【问题讨论】：

标签： ios email send

【解决方案1】：

在.h头文件中......

 #import <UIKit/UIKit.h>


#import <MessageUI/MessageUI.h>



@interface SimpleEmailViewController : UIViewController <MFMailComposeViewControllerDelegate> // Add the delegate
- (IBAction)showEmail:(id)sender;



@end

在.m实现文件中.....

- (IBAction)showEmail:(id)sender {
// Email Subject
NSString *emailTitle = @"Test Email";
// Email Content
NSString *messageBody = @"iOS programming is so fun!";
// To address
NSArray *toRecipents = [NSArray arrayWithObject:@"info@finetechnosoft.in"];

MFMailComposeViewController *mc = [[MFMailComposeViewController alloc] init];
mc.mailComposeDelegate = self;
[mc setSubject:emailTitle];
[mc setMessageBody:messageBody isHTML:NO];
[mc setToRecipients:toRecipents];

// Present mail view controller on screen
[self presentViewController:mc animated:YES completion:NULL];
}




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



switch (result)
{
    case MFMailComposeResultCancelled:
        NSLog(@"Mail cancelled");
        break;
    case MFMailComposeResultSaved:
        NSLog(@"Mail saved");
        break;
    case MFMailComposeResultSent:
        NSLog(@"Mail sent");
        break;
    case MFMailComposeResultFailed:
        NSLog(@"Mail sent failure: %@", [error localizedDescription]);
        break;
    default:
        break;
}


// Close the Mail Interface
[self dismissViewControllerAnimated:YES completion:NULL];
}

【讨论】：

【解决方案2】：

我为 Sendgrid 工作。我们有一个 Objective-c 库，可让您从应用程序内部快速发送电子邮件，https://github.com/sendgrid/sendgrid-objc。您可以使用 cocoapods 在您的项目中快速安装该库。

然后从您的 (IBAction) 发送电子邮件将如下所示：

-(IBAction)sendEmail{

sendgrid *msg = [sendgrid user:@"username" andPass:@"password"];
msg.to = @"FrankMurphy.CEO@RomansXIII.com";
msg.from = @"me@bar.com";
msg.text = @"hello world";   
msg.html = @"<h1>hello world!</h1>";

[msg sendWithWeb];

}

【讨论】：

【解决方案3】：

我认为您使用了错误的方法。试试

[self presentViewController:(UIViewController *) animated:(BOOL) completion:(void)completion];

代替：

[self presentViewController:composer animated:YES];

【讨论】：

【解决方案4】：

检查你是否是 MFMailComposeViewControllerDelegate。你这样做

@interface YouClassName : UIViewController <MFMailComposeViewControllerDelegate> 

@end

【讨论】：

感谢您的回复！是的，我在头文件中这样做了