如下內容是關于ios程序內發送郵件的內容。 iPhone API已經提供了系統寫郵件界面的接口,使用MFMailComposeViewController，用來顯示界面.
項目中需要添加MessageUi.framework。頭文件加入MFMailComposeViewControllerDelegate。#import <MessageUI/MessageUI.h>
sendMailViewController.m文件的實現：

• (void)viewDidLoad
  {
  button.frame = CGRectMake(0, 40, 320, 50);
  [button setTitle: @"Mail" forState: UIControlStateNormal];
  [button addTarget: self action: @selector(sendEMail) forControlEvents: UIControlEventTouchUpInside];
  [self.view addSubview: button];
  }

{
message:msg
delegate:nil
cancelButtonTitle:@"確定"
otherButtonTitles:nil];
[alert show];
[alert release];
}

-(void)sendEMail
{
Class mailClass = (NSClassFromString(@"MFMailComposeViewController"));

if (mailClass != nil) { if ([mailClass canSendMail]) { [self displayComposerSheet]; } else { [self launchMailAppOnDevice]; } } else { [self launchMailAppOnDevice]; } 復制代碼

}
-(void)displayComposerSheet
{

mailPicker.mailComposeDelegate = self; [mailPicker setSubject: @"eMail主題"]; [mailPicker setToRecipients: toRecipients]; [mailPicker addAttachmentData: imageData mimeType: @"" fileName: @"123.jpg"]; [mailPicker setMessageBody:emailBody isHTML:YES]; [self presentModalViewController: mailPicker animated:YES]; [mailPicker release]; 復制代碼

}
-(void)launchMailAppOnDevice
{

email = [email stringByAddingPercentEscapesUsingEncoding: NSUTF8StringEncoding]; [[UIApplication sharedApplication] openURL: [NSURL URLWithString:email]]; 復制代碼

}
{

switch (result) { case MFMailComposeResultCancelled: msg = @"郵件發送取消"; break; case MFMailComposeResultSaved: msg = @"郵件保存成功"; [self alertWithTitle:nil msg:msg]; break; case MFMailComposeResultSent: msg = @"郵件發送成功"; [self alertWithTitle:nil msg:msg]; break; case MFMailComposeResultFailed: msg = @"郵件發送失敗"; [self alertWithTitle:nil msg:msg]; break; default: break; } [self dismissModalViewControllerAnimated:YES]; 復制代碼

}

總結

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