iOS发送邮件

iPhone API已经提供了系统写邮件界面的接口,使用MFMailComposeViewController，用来显示界面.

项目中需要添加MessageUi.framework。头文件加入MFMailComposeViewControllerDelegate。#import <MessageUI/MessageUI.h>

sendMailViewController.m文件的实现：

- ( void )viewDidLoad

{

     UIButton *button = [UIButton buttonWithType: UIButtonTypeRoundedRect];

     button.frame = CGRectMake(0, 40, 320, 50);

     [button setTitle: @ "Mail" forState: UIControlStateNormal];

     [button addTarget: self action: @selector(sendEMail) forControlEvents: UIControlEventTouchUpInside];

     [self.view addSubview: button];

}

 

- ( void ) alertWithTitle: (NSString *)_title_ msg: (NSString *)msg

{

     UIAlertView *alert = [[UIAlertView alloc] initWithTitle:_title_

                                                     message:msg

                                                    delegate:nil

                                           cancelButtonTitle:@ "确定"

                                           otherButtonTitles:nil];

     [alert show];

     [alert release];

}

 

//点击按钮后，触发这个方法

-( void )sendEMail

{

     Class mailClass = (NSClassFromString(@ "MFMailComposeViewController" ));

     

     if (mailClass != nil)

     {

         if ([mailClass canSendMail])

         {

             [self displayComposerSheet];

         }

         else

         {

             [self launchMailAppOnDevice];

         }

     }

     else

     {

         [self launchMailAppOnDevice];

     }   

}

//可以发送邮件的话

-( void )displayComposerSheet

{

     MFMailComposeViewController *mailPicker = [[MFMailComposeViewController alloc] init];

     

     mailPicker.mailComposeDelegate = self;

     

     //设置主题

     [mailPicker setSubject: @ "eMail主题" ];

     

     // 添加发送者

     NSArray *toRecipients = [NSArray arrayWithObject: @ "first@example.com" ];

     //NSArray *ccRecipients = [NSArray arrayWithObjects:@"second@example.com", @"third@example.com", nil];

     //NSArray *bccRecipients = [NSArray arrayWithObject:@"fourth@example.com", nil];

     [mailPicker setToRecipients: toRecipients];

     //[picker setCcRecipients:ccRecipients];   

     //[picker setBccRecipients:bccRecipients];

     

     // 添加图片

     UIImage *addPic = [UIImage imageNamed: @ "123.jpg" ];

     NSData *imageData = UIImagePNGRepresentation(addPic);            // png

     // NSData *imageData = UIImageJPEGRepresentation(addPic, 1);    // jpeg

     [mailPicker addAttachmentData: imageData mimeType: @ "" fileName: @ "123.jpg" ];

     

     NSString *emailBody = @ "eMail 正文" ;

     [mailPicker setMessageBody:emailBody isHTML:YES];

     

     [self presentModalViewController: mailPicker animated:YES];

     [mailPicker release];

}

-( void )launchMailAppOnDevice

{

     NSString *recipients = @ "mailto:first@example.com&subject=my email!" ;

     //@"mailto:first@example.com?cc=second@example.com,third@example.com&subject=my email!";

     NSString *body = @ "&body=email body!" ;

     

     NSString *email = [NSString stringWithFormat:@ "%@%@" , recipients, body];

     email = [email stringByAddingPercentEscapesUsingEncoding: NSUTF8StringEncoding];

     

     [[UIApplication sharedApplication] openURL: [NSURL URLWithString:email]];

}

- ( void )mailComposeController:(MFMailComposeViewController *)controller

           didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error

{

     NSString *msg;

     

     switch (result)

     {

         case MFMailComposeResultCancelled:

             msg = @ "邮件发送取消" ;

             break ;

         case MFMailComposeResultSaved:

             msg = @ "邮件保存成功" ;

             [self alertWithTitle:nil msg:msg];

             break ;

         case MFMailComposeResultSent:

             msg = @ "邮件发送成功" ;

             [self alertWithTitle:nil msg:msg];

             break ;

         case MFMailComposeResultFailed:

             msg = @ "邮件发送失败" ;

             [self alertWithTitle:nil msg:msg];

             break ;

         default :

             break ;

     }

     

     [self dismissModalViewControllerAnimated:YES];

}