IOS系统框架提供的两种发送Email的方法：openURL 和 MFMailComposeViewController。借助这两个方法，我们可以轻松的在应用里加入如用户反馈这类需要发送邮件的功能。
1.openURL
使用openURL调用系统邮箱客户端是我们在IOS3.0以下实现发邮件功能的主要手段。我们可以通过设置url里的相关参数来指定邮件的内容，不过其缺点很明显，这样的过程会导致程序暂时退出。下面是使用openURL来发邮件的一个小例子：
#pragma mark - 使用系统邮件客户端发送邮件
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-(void)launchMailApp { NSMutableString *mailUrl = [[[NSMutableString alloc]init]autorelease]; //添加收件人 NSArray *toRecipients = [NSArray arrayWithObject: @"first@example.com"]; [mailUrl appendFormat:@"mailto:%@", [toRecipients componentsJoinedByString:@","]]; //添加抄送 NSArray *ccRecipients = [NSArray arrayWithObjects:@"second@example.com", @"third@example.com", nil]; [mailUrl appendFormat:@"?cc=%@", [ccRecipients componentsJoinedByString:@","]]; //添加密送 NSArray *bccRecipients = [NSArray arrayWithObjects:@"fourth@example.com", nil]; [mailUrl appendFormat:@"&bcc=%@", [bccRecipients componentsJoinedByString:@","]]; //添加主题 [mailUrl appendString:@"&subject=my email"]; //添加邮件内容 [mailUrl appendString:@"&body=<b>email</b> body!"]; NSString* email = [mailUrl stringByAddingPercentEscapesUsingEncoding: NSUTF8StringEncoding]; [[UIApplication sharedApplication] openURL: [NSURL URLWithString:email]]; } |
2.MFMailComposeViewController
MFMailComposeViewController是在IOS3.0新增的一个接口，它在MessageUI.framework中。通过调用
MFMailComposeViewController，可以把邮件发送窗口集成到我们的应用里，发送邮件就不需要退出程序了。
MFMailComposeViewController的使用方法：
1.项目中引入MessageUI.framework；
2.在使用的文件中导入MFMailComposeViewController.h头文件；
3.实现MFMailComposeViewControllerDelegate，处理邮件发送事件；
4.调出邮件发送窗口前先使用MFMailComposeViewController里的“+ (BOOL)canSendMail”方法检查用户是否设置了邮件账户；
5.初始化MFMailComposeViewController，构造邮件体
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// // ViewController.h // MailDemo // // Created by LUOYL on 12-4-4. // Copyright (c) 2012年 http://luoyl.info. All rights reserved. // #import <UIKit/UIKit.h> #import <MessageUI/MFMailComposeViewController.h> @interface ViewController : UIViewController<MFMailComposeViewControllerDelegate> @end <br> |
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#pragma mark - 在应用内发送邮件 //激活邮件功能 - (void)sendMailInApp { Class mailClass = (NSClassFromString(@"MFMailComposeViewController")); if (!mailClass) { [self alertWithMessage:@"当前系统版本不支持应用内发送邮件功能，您可以使用mailto方法代替"]; return; } if (![mailClass canSendMail]) { [self alertWithMessage:@"用户没有设置邮件账户"]; return; } [self displayMailPicker]; } //调出邮件发送窗口 - (void)displayMailPicker { MFMailComposeViewController *mailPicker = [[MFMailComposeViewController alloc] init]; mailPicker.mailComposeDelegate = self; //设置主题 [mailPicker setSubject: @"eMail主题"]; //添加收件人 NSArray *toRecipients = [NSArray arrayWithObject: @"first@example.com"]; [mailPicker setToRecipients: toRecipients]; //添加抄送 NSArray *ccRecipients = [NSArray arrayWithObjects:@"second@example.com", @"third@example.com", nil]; [mailPicker setCcRecipients:ccRecipients]; //添加密送 NSArray *bccRecipients = [NSArray arrayWithObjects:@"fourth@example.com", nil]; [mailPicker setBccRecipients:bccRecipients]; // 添加一张图片 UIImage *addPic = [UIImage imageNamed: @"Icon@2x.png"]; NSData *imageData = UIImagePNGRepresentation(addPic); // png //关于mimeType：http://www.iana.org/assignments/media-types/index.html [mailPicker addAttachmentData: imageData mimeType: @"" fileName: @"Icon.png"]; //添加一个pdf附件 NSString *file = [self fullBundlePathFromRelativePath:@"高质量C++编程指南.pdf"]; NSData *pdf = [NSData dataWithContentsOfFile:file]; [mailPicker addAttachmentData: pdf mimeType: @"" fileName: @"高质量C++编程指南.pdf"]; NSString *emailBody = @"<font color='red'>eMail</font> 正文"; [mailPicker setMessageBody:emailBody isHTML:YES]; [self presentModalViewController: mailPicker animated:YES]; [mailPicker release]; } #pragma mark - 实现 MFMailComposeViewControllerDelegate - (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error { //关闭邮件发送窗口 [self dismissModalViewControllerAnimated:YES]; NSString *msg; switch (result) { case MFMailComposeResultCancelled: msg = @"用户取消编辑邮件"; break; case MFMailComposeResultSaved: msg = @"用户成功保存邮件"; break; case MFMailComposeResultSent: msg = @"用户点击发送，将邮件放到队列中，还没发送"; break; case MFMailComposeResultFailed: msg = @"用户试图保存或者发送邮件失败"; break; default: msg = @""; break; } [self alertWithMessage:msg]; } |
原文链接：http://blog.csdn.net/u011374880/article/details/46708629
