使用MFMailComposeViewController发送邮件
1.项目需要导入框架:MessageUI.framework
2.使用的Controller的.h文件中添加代理 MFMailComposeViewControllerDelegate 并且导入头文件:#import <MessageUI/MessageUI.h>
3.判断用户是否设置了邮箱账户
BOOL canSend = [MFMailComposeViewController canSendMail]; if (canSend) { [self sendEmailAction]; }else{ //提示用户添加邮件账户 UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"Please Add Your Mail Account:" message:@"Settings->Mail,Contacts,Calendars->Add Account" preferredStyle:UIAlertControllerStyleAlert]; UIAlertAction *defaultAction = [UIAlertAction actionWithTitle:[kGlobal getStringValueWithKey:@"OK"] style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {}]; [alert addAction:defaultAction]; [self presentViewController:alert animated:YES completion:nil]; }
4.sendEmailAction方法代码
- (void)sendEmailAction { // 邮件服务器 MFMailComposeViewController *mailCompose = [[MFMailComposeViewController alloc] init]; // 设置邮件代理 [mailCompose setMailComposeDelegate:self]; // 设置邮件主题 [mailCompose setSubject:@"我是邮件主题"]; // 设置收件人 [mailCompose setToRecipients:@[@"[email protected]"]]; // 设置抄送人 [mailCompose setCcRecipients:@[@"[email protected]"]]; // 设置密抄送 [mailCompose setBccRecipients:@[@"[email protected]"]]; /** * 设置邮件的正文内容 */ NSString *emailContent = @"我是邮件内容"; // 是否为HTML格式 [mailCompose setMessageBody:emailContent isHTML:NO]; // 如使用HTML格式,则为以下代码 /** NSData *imageData = UIImageJPEGRepresentation(self.cellImage, 0.5); NSString *encodedString = [imageData base64EncodedStringWithOptions:NSDataBase64EncodingEndLineWithCarriageReturn]; NSString *emailContent = [NSString stringWithFormat:@"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\"><head><meta http-equiv=\"content-type\" content=\"text/html;charset=utf-8\"></head><body><img src=\"data:image/jpeg;base64,%@\" /><p><table width=\"300px\"><tr><td colspan=\"2\" align=\"left\" style=\"color:red;font-style:italic\">%@</td></tr><tr><td>%@</td><td align=\"right\">%@</td></tr><tr><td>%@</td><td align=\"right\">%@</td></tr><tr><td>%@</td><td align=\"right\">%@</td></tr><tr><td>%@</td><td align=\"right\">%@</td></tr><tr><td colspan=\"2\" align=\"left\" style=\"color:red;font-style:italic\">%@</td></tr><tr><td>%@</td><td align=\"right\">%@</td></tr><tr><td>%@</td><td align=\"right\">%@</td></tr><tr><td>%@</td><td align=\"right\">%@</td></tr></table></p></body></html>",encodedString,firstTitle,[kGlobal getStringValueWithKey:@"casePrice"],[Global getFormatStr:self.offering.case_price],[kGlobal getStringValueWithKey:@"casesneeded"],[Global getFormatStr:self.offering.cases_needed],[kGlobal getStringValueWithKey:@"productsavingcases"],[NSString stringWithFormat:@"$%@",[Global getFormatStr:self.offering.product_savings]],[kGlobal getStringValueWithKey:@"annualSaving"],[NSString stringWithFormat:@"$%@",[Global getFormatStr:self.offering.annual_savings]],secondTitle,[kGlobal getStringValueWithKey:@"pricepaidpercase"],[Global getFormatStr:self.operatorVolume.pricePerCase],[kGlobal getStringValueWithKey:@"casespurchasedannually"],[Global getFormatStr:self.competitorProduct.cases_purchase_annuaully],[kGlobal getStringValueWithKey:@"costofcompetitiveproduct"],[Global getFormatStr:self.competitorProduct.cost_of_competitive_product]];//直接把图片转成Base64编码放到邮件里面,注意Base64编码图片的格式(PNG,JPEG)要和压缩的格式一样,否则不能显示 */ //添加附件 //添加图片附件 UIImage *image = [UIImage imageNamed:@"image"]; NSData *imageData = UIImagePNGRepresentation(image); [mailCompose addAttachmentData:imageData mimeType:@"" fileName:@"custom.png"]; //添加PDF附件 NSString *file = [[NSBundle mainBundle] pathForResource:@"test" ofType:@"pdf"]; NSData *pdf = [NSData dataWithContentsOfFile:file]; [mailCompose addAttachmentData:pdf mimeType:@"" fileName:@"test"]; // 弹出邮件发送视图 [self presentViewController:mailCompose animated:YES completion:nil]; }
5.MFMailComposeViewControllerDelegate的代理方法:
- (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error { switch (result) { case MFMailComposeResultCancelled: // 用户取消编辑 NSLog(@"Mail send canceled..."); break; case MFMailComposeResultSaved: // 用户保存邮件 NSLog(@"Mail saved..."); break; case MFMailComposeResultSent: // 用户点击发送 NSLog(@"Mail sent..."); break; case MFMailComposeResultFailed: // 用户尝试保存或发送邮件失败 NSLog(@"Mail send errored: %@...", [error localizedDescription]); break; } // 关闭邮件发送视图 [self dismissViewControllerAnimated:YES completion:nil]; }
需要注意的事项:
1.邮件的发送必须真机测试,ipad或iPhone测试都行,否则会崩溃
2.添加的附件在邮件编辑的过程中会直接显示在正文内容后面,发送之后需要下载
3.发送非HTML内容时,正文内容是一个NSString类型的字符串;如果发送HTML类型的数据,需要注意尽量写标准的HTML格式,不然邮件无法解析,我上面写的发送的HTML格式的内容中,实际上混合了一张图片和一个表格,图片采用的是Base64的编码格式,浏览器可以直接解析Base64编码,但是注意邮件不是浏览器,邮件对HTML的格式要求更加严格。我就因为加载JPEG格式的图片时,在HTML中使用了PNG格式的Base64的解码方式,结果在浏览器中可以正常显示,邮件中无法显示。而且通过Base64嵌入到网页中的图片有大小限制,尽量嵌入小图片。
Data URI scheme支持的类型有:
data:,文本数据
data:text/plain,文本数据
data:text/html,HTML代码
data:text/html;base64,base64编码的HTML代码
data:text/css,CSS代码
data:text/css;base64,base64编码的CSS代码
data:text/javascript,Javascript代码
data:text/javascript;base64,base64编码的Javascript代码
data:image/gif;base64,base64编码的gif图片数据
data:image/png;base64,base64编码的png图片数据
data:image/jpeg;base64,base64编码的jpeg图片数据
data:image/x-icon;base64,base64编码的icon图片数据