ios - 如何在 Xcode 的应用程序内发送电子邮件？

Question

我是 xcode 的新手，想知道如何在应用程序中发送电子邮件!我的代码在下面，但我不断收到错误消息“'jakem' 的可见@interface 声明选择器'presentViewControllerAnimated:'”。我的代码完全错误吗？或者我只是忘记声明选择器，我该如何声明选择器？我已经在互联网上研究了至少一个小时，但没有任何效果。有人请帮助我!

    -(IBAction)sendEmail{

    MFMailComposeViewController *composer = [[MFMailComposeViewController alloc] init];
    [composer setMailComposeDelegate:self];
    if ([MFMailComposeViewController canSendMail]) {
    [composer setToRecipients:[NSArray          arrayWithObjects:@"FrankMurphy.CEO@RomansXIII.com", nil]];
    [composer setModalTransitionStyle:UIModalTransitionStyleCrossDissolve];
    [self presentViewController:composer animated:YES];

    }

    }

    -(void)mailComposeController:(MFMailComposeViewController *)controller   didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error {
    if(error) {
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"error" message:[NSString    stringWithFormat:@"error %@", [error description]] delegate:nil cancelButtonTitle:@"dismiss" otherButtonTitles:nil, nil];
    [alert show];
    [self dismissViewControllerAnimated:YES];
    }
    else {
    [self dismissViewControllerAnimated:YES];
    }
    }

Answer 1

在 .h 头文件中....

 #import <UIKit/UIKit.h>


#import <MessageUI/MessageUI.h>



@interface SimpleEmailViewController : UIViewController <MFMailComposeViewControllerDelegate> // Add the delegate
- (IBAction)showEmail:(id)sender;



@end

在.m实现文件中......

- (IBAction)showEmail:(id)sender {
// Email Subject
NSString *emailTitle = @"Test Email";
// Email Content
NSString *messageBody = @"iOS programming is so fun!";
// To address
NSArray *toRecipents = [NSArray arrayWithObject:@"info@finetechnosoft.in"];

MFMailComposeViewController *mc = [[MFMailComposeViewController alloc] init];
mc.mailComposeDelegate = self;
[mc setSubject:emailTitle];
[mc setMessageBody:messageBody isHTML:NO];
[mc setToRecipients:toRecipents];

// Present mail view controller on screen
[self presentViewController:mc animated:YES completion:NULL];
}




- (void) mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error
{



switch (result)
{
    case MFMailComposeResultCancelled:
        NSLog(@"Mail cancelled");
        break;
    case MFMailComposeResultSaved:
        NSLog(@"Mail saved");
        break;
    case MFMailComposeResultSent:
        NSLog(@"Mail sent");
        break;
    case MFMailComposeResultFailed:
        NSLog(@"Mail sent failure: %@", [error localizedDescription]);
        break;
    default:
        break;
}


// Close the Mail Interface
[self dismissViewControllerAnimated:YES completion:NULL];
}