Question

我正致力于通过电子邮件发送录制的数据。我正在研究的项目是基于Apple的示例项目SpeakHere。我的程序中的功能是，当我点击停止按钮时，手机应显示电子邮件视图。这部分是基于苹果的电子邮件示例代码编写的，如下所示：

-(void)displayComposerSheet{
MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
picker.mailComposeDelegate = self; 

[picker setSubject:@"Recorded Data!"];
// Set up the recipients.
NSArray *toRecipients = [NSArray arrayWithObjects:@"yyyy@gmail.com",nil];

[picker setToRecipients:toRecipients];

NSString *path = recorder -> getFilePath();
NSLog(@"%@",path);

NSData *myData = [NSData dataWithContentsOfFile:path];
[picker addAttachmentData:myData mimeType:@"text/plain" fileName:@"MyFile"];

// Fill out the email body text.
NSString *emailBody = @"The attachement is the recorded integer data!";
[picker setMessageBody:emailBody isHTML:NO];

// Present the mail composition interface.
// [self presentModalViewController:picker animated:YES];
[self presentViewController:picker animated:YES completion:NULL];

[picker release]; // Can safely release the controller now.
}

邮件撰写视图控制器委托方法如下：

- (void)mailComposeController:(MFMailComposeViewController *)controller
      didFinishWithResult:(MFMailComposeResult)result
                    error:(NSError *)error
{
UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"Mail Alert" message:nil delegate:self cancelButtonTitle:@"ok" otherButtonTitles: nil] ;


switch (result)
{
    case MFMailComposeResultCancelled:
        alert.message = @"Email Cancelled";
        break;
    case MFMailComposeResultSaved:
        alert.message = @"Email Saved";
        break;
    case MFMailComposeResultSent:
        alert.message = @"Email Sent";
        break;
    case MFMailComposeResultFailed:
        alert.message = @"Email Failed";
        break;
    default:
        alert.message = @"Email Not Sent";
        break;
}


// [self dismissModalViewControllerAnimated:YES];
[self dismissViewControllerAnimated:YES completion:NULL];
[alert show];
}`

然而，当我点击停止按钮时它崩溃了。我觉得原因是这段代码是用SpeakHereController.mm编写的。但是，真正的视图控制器是SpeakHereViewController。 SpeakHereViewController.h中的代码是

@class SpeakHereController;
@interface SpeakHereViewController : UIViewController {

IBOutlet SpeakHereController *controller;
}
@end

但是，我不知道如何编辑电子邮件部分的代码以将视图控制器从self（SpeakHereController）设置为SpeakHereViewController。谁能帮我？非常感谢！

跟进：

如果我更改代码，我的iPhone可以显示邮件视图：

self.window.rootViewController = viewController;

在委托文件中，然后更改

[self presentViewController:picker animated:YES completion:nil];

为：

[[UIApplication sharedApplication].keyWindow.rootViewController presentViewController:picker animated:YES completion:NULL];

但是，新问题是，如果我取消邮件，邮件视图就无法解除。似乎问题是由于以下代码而发生的：

picker.mailComposeDelegate = self;

委托应该是根视图控制器的委托，但我不知道如何将委托设置为根视图控制器的委托。有人可以帮忙吗？

Answer 1

我相信你需要MailController的代表，即

#import <MessageUI/MessageUI.h>
#import <MessageUI/MFMailComposeViewController.h>

@interface SpeakHereViewController : UIViewController <MFMailComposeViewControllerDelegate>

确保添加MessageUI框架

我有时会发现苹果教程有点难以理解。尝试谷歌搜索xcode电子邮件教程。 Here就是一个。

无法在SpeakHere项目中加载电子邮件界面

1 个答案: