使用iPhone上的MessageUI中的MFMailComposeViewController从应用程序发送电子邮件消息

概述我是一名软件开发人员,我正在为电子邮件制作应用程序,我有以下代码： // Header file // importing the MessageUI framework #import <MessageUI/MessageUI.h> // adding the delegate functionality to the class (<MFMailComposeViewContr 我是一名软件开发人员,我正在为电子邮件制作应用程序,我有以下代码：

// header file  // importing the MessageUI framework  #import <MessageUI/MessageUI.h>  // adding the delegate functionality to the class (<MFMailComposeVIEwControllerDelegate>)  @interface TutorialProjectVIEwController : UIVIEwController <MFMailComposeVIEwControllerDelegate> {  }  - (IBAction)presstheMailbuttonDudefunction:(ID)sender// Implementation file  - (IBAction)presstheMailbuttonDudefunction:(ID)sender {      // allocatind new message composer window      MFMailComposeVIEwController *mc = [[MFMailComposeVIEwController alloc] init];      // setting a delegate method to "self"      mc.mailComposeDelegate = self;      // pre-populating the message subject      [mc setSubject:@"Send me a message"];      // adding content of the message as a plain text      [mc setMessageBody:@"Send me a message is you like this tutorial :)" isHTML:NO];      // adding content of the message as an HTML      [mc setMessageBody:@"<p>Send me a message is you like this tutorial :)<p>" isHTML:YES];      // adding recipIEnts      [mc setToRecipIEnts:[NSArray arrayWithObjects:@"Fuerte <info@fuerte.cz>",@"info@xprogress.com",nil]];      // adding recipIEnts for a send copy to (arrayWithObject or arrayWithObjects)      [mc setCcRecipIEnts:[NSArray arrayWithObject:@"test@example.com"]];      // adding hIDden recipIEnts      [mc setBccRecipIEnts:[NSArray arrayWithObject:@"test@example.com"]];      // adding image attachment      // getting path for the image we have in the tutorial project      Nsstring *path = [[NSBundle mainBundle] pathForResource:@"Extra_Xcode_100x100" ofType:@"png"];      // loading content of the image into NSData      NSData *imageData = [NSData dataWithContentsOffile:path];      // adding the attachment to he message      [mc addAttachmentData:imageData mimeType:@"image/png" filename:@"Collection"];      // setting different than the default Transition for the modal vIEw controller      [mc setModalTransitionStyle:UIModalTransitionStyleCrossdissolve];      /*      Modal vIEw controllers Transitions:      UIModalTransitionStyleCoverVertical => pops up from the bottom,default Transition      UIModalTransitionStyleCrossdissolve => fade on the screen      UIModalTransitionStyleFlipHorizontal => page flip      */      // displaying our modal vIEw controller on the screen (of course animated has to be set on YES if you want to see any Transition)      [self presentModalVIEwController:mc animated:YES];      // releasing the controller      [mc release];  }  // delegate function callback  - (voID)mailComposeController:(MFMailComposeVIEwController *)controller dIDFinishWithResult:(MFMailComposeResult)result error:(NSError *)error {      // switchng the result      switch (result) {          case MFMailComposeResultCancelled:              NSLog(@"Mail send canceled.");              /*              Execute your code for canceled event here ...              */              break;          case MFMailComposeResultSaved:              NSLog(@"Mail saved.");              /*              Execute your code for email saved event here ...              */              break;          case MFMailComposeResultSent:              NSLog(@"Mail sent.");              /*              Execute your code for email sent event here ...              */              break;          case MFMailComposeResultFailed:              NSLog(@"Mail send error: %@.",[error localizedDescription]);              /*              Execute your code for email send Failed event here ...              */              break;          default:              break;      }      // hIDe the modal vIEw controller      [self dismissModalVIEwControllerAnimated:YES];  }

而且我没有得到正确的答案……这是一个正确的代码吗？

解决方法 >确保将MessageUI框架包含在iOS项目中.在Xcode 4中,您可以通过在左栏中选择项目来包含框架.然后选择“构建阶段”选项卡.在这里,您可以单击“link Binary With librarIEs”左侧的箭头,您将看到已包含在您的应用程序中的框架列表.如果缺少MessageUI.framework – 只需将其添加到那里.
>您发布的代码看起来像一个完整的教程代码剪切…所以只使用您需要的代码…并逐步添加更多功能.通过这种方式,您可以看到添加错误代码行的位置.也许您的应用包中没有图片“Extra_Xcode_100x100.png”.

所以,这是一个“最小”的MFMailComposeVIEwController：

- (IBAction)showMinimalModalMailVIEw:(ID)sender {    // get a new new MailComposeVIEwController object     MFMailComposeVIEwController *mc = [[MFMailComposeVIEwController alloc] init];      // his class should be the delegate of the mc      mc.mailComposeDelegate = self;      // set a mail subject ... but you do not need to do this :)    [mc setSubject:@"This is an optional mail subject!"];      // set some basic plain text as the message body ... but you do not need to do this :)    [mc setMessageBody:@"This is an optional message body plain text!" isHTML:NO];      // set some recipIEnts ... but you do not need to do this :)     [mc setToRecipIEnts:[NSArray arrayWithObjects:@"first.address@test.com",@"second.address@test.com",nil]];      // displaying our modal vIEw controller on the screen with standard Transition      [self presentModalVIEwController:mc animated:YES];      // be a good memory manager and release mc,as you are responsible for it because your alloc/init    [mc release];  }

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