添加MessageUI.framework库

#import <MessageUI/MFMailComposeViewController.h>

MFMailComposeViewControllerDelegate


//
//  YBMViewController.m
//  qweqw
//
//  Created by K on 14-12-4.
//  Copyright (c) 2014年 K. All rights reserved.
//

#import "YBMViewController.h"

@interface YBMViewController ()

@end

@implementation YBMViewController

- (void)viewDidLoad
{
    //1,添加messageui。framework
    //2..h文件中添加MFMailComposeViewControllerDelegate代理
    //3.添加以下方法 修改出已标明
    //4连真机（真机必须有邮箱登录，因为发邮件实际上是通过设备绑定的邮箱发而不是程序发的）
    [super viewDidLoad];
    UIButton *button = [UIButton buttonWithType: UIButtonTypeRoundedRect];
    button.frame = CGRectMake(0, 40, 320, 50);
    [button setTitle: @"Mail" forState: UIControlStateNormal];
    [button addTarget: self action: @selector(sendEMail) forControlEvents: UIControlEventTouchUpInside];
    [self.view addSubview: button];
}
//点击按钮后，触发这个方法
-(void)sendEMail
{
    Class mailClass = (NSClassFromString(@"MFMailComposeViewController"));

    if (mailClass != nil)
    {
        if ([mailClass canSendMail])
        {
            [self displayComposerSheet];
        }
        else
        {
            [self launchMailAppOnDevice];
        }
    }
    else
    {
        [self launchMailAppOnDevice];
    }
}
//可以发送邮件的话
-(void)displayComposerSheet
{
    MFMailComposeViewController *mailPicker = [[MFMailComposeViewController alloc] init];

    mailPicker.mailComposeDelegate = self;

    //设置主题
    [mailPicker setSubject: @"eMail主题"];

    // 添加发送者                                    //修改1: 收件人地址
    NSArray *toRecipients = [NSArray arrayWithObject: @"1246092111@qq.com"];
    //NSArray *ccRecipients = [NSArray arrayWithObjects:@"second@example.com", @"third@example.com", nil];
    //NSArray *bccRecipients = [NSArray arrayWithObject:@"fourth@example.com", nil];
    [mailPicker setToRecipients: toRecipients];
    //[picker setCcRecipients:ccRecipients];
    //[picker setBccRecipients:bccRecipients];

    // 添加图片                         //修改2文件名字 （附件形式）
    UIImage *addPic = [UIImage imageNamed: @"flower.png"];
    NSData *imageData = UIImagePNGRepresentation(addPic);            // png
    // NSData *imageData = UIImageJPEGRepresentation(addPic, 1);    // jpeg
                                                                //修改2文件名字 （附件形式）
    [mailPicker addAttachmentData: imageData mimeType: @"" fileName: @"flower.png"];

    NSString *emailBody = @"eMail 正文";
    [mailPicker setMessageBody:emailBody isHTML:YES];

    [self presentViewController:mailPicker animated:YES completion:nil];
    [mailPicker release];
}
-(void)launchMailAppOnDevice
{
    NSString *recipients = @"mailto:first@example.com&subject=my email!";
    //@"mailto:first@example.com?cc=second@example.com,third@example.com&subject=my email!";
    NSString *body = @"&body=email body!";

    NSString *email = [NSString stringWithFormat:@"%@%@", recipients, body];
    email = [email stringByAddingPercentEscapesUsingEncoding: NSUTF8StringEncoding];

    [[UIApplication sharedApplication] openURL: [NSURL URLWithString:email]];
}
- (void)mailComposeController:(MFMailComposeViewController *)controller
          didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error
{
    NSString *msg;

    switch (result)
    {
        case MFMailComposeResultCancelled:
            msg = @"邮件发送取消";
            break;
        case MFMailComposeResultSaved:
            msg = @"邮件保存成功";

//            [self alertWithTitle:nil msg:msg];
            break;
        case MFMailComposeResultSent:
            msg = @"邮件发送成功";
//            [self alertWithTitle:nil msg:msg];
            break;
        case MFMailComposeResultFailed:
            msg = @"邮件发送失败";
//            [self alertWithTitle:nil msg:msg];
            break;
        default:
            break;
    }
    NSLog(@"%@",msg);
    [self dismissModalViewControllerAnimated:YES];
}
- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

//
//  YBMViewController.m
//  qweqw
//
//  Created by K on 14-12-4.
//  Copyright (c) 2014年 K. All rights reserved.
//

#import "YBMViewController.h"

@interface YBMViewController ()

@end

@implementation YBMViewController

- (void)viewDidLoad
{
    //1,添加messageui。framework
    //2..h文件中添加MFMailComposeViewControllerDelegate代理
    //3.添加以下方法 修改出已标明
    //4连真机（真机必须有邮箱登录，因为发邮件实际上是通过设备绑定的邮箱发而不是程序发的）
    [super viewDidLoad];
    UIButton *button = [UIButton buttonWithType: UIButtonTypeRoundedRect];
    button.frame = CGRectMake(0, 40, 320, 50);
    [button setTitle: @"Mail" forState: UIControlStateNormal];
    [button addTarget: self action: @selector(sendEMail) forControlEvents: UIControlEventTouchUpInside];
    [self.view addSubview: button];
}
//点击按钮后，触发这个方法
-(void)sendEMail
{
    Class mailClass = (NSClassFromString(@"MFMailComposeViewController"));

    if (mailClass != nil)
    {
        if ([mailClass canSendMail])
        {
            [self displayComposerSheet];
        }
        else
        {
            [self launchMailAppOnDevice];
        }
    }
    else
    {
        [self launchMailAppOnDevice];
    }
}
//可以发送邮件的话
-(void)displayComposerSheet
{
    MFMailComposeViewController *mailPicker = [[MFMailComposeViewController alloc] init];

    mailPicker.mailComposeDelegate = self;

    //设置主题
    [mailPicker setSubject: @"eMail主题"];

    // 添加发送者                                    //修改1: 收件人地址
    NSArray *toRecipients = [NSArray arrayWithObject: @"1246092111@qq.com"];
    //NSArray *ccRecipients = [NSArray arrayWithObjects:@"second@example.com", @"third@example.com", nil];
    //NSArray *bccRecipients = [NSArray arrayWithObject:@"fourth@example.com", nil];
    [mailPicker setToRecipients: toRecipients];
    //[picker setCcRecipients:ccRecipients];
    //[picker setBccRecipients:bccRecipients];

    // 添加图片                         //修改2文件名字 （附件形式）
    UIImage *addPic = [UIImage imageNamed: @"flower.png"];
    NSData *imageData = UIImagePNGRepresentation(addPic);            // png
    // NSData *imageData = UIImageJPEGRepresentation(addPic, 1);    // jpeg
                                                                //修改2文件名字 （附件形式）
    [mailPicker addAttachmentData: imageData mimeType: @"" fileName: @"flower.png"];

    NSString *emailBody = @"eMail 正文";
    [mailPicker setMessageBody:emailBody isHTML:YES];

    [self presentViewController:mailPicker animated:YES completion:nil];
    [mailPicker release];
}
-(void)launchMailAppOnDevice
{
    NSString *recipients = @"mailto:first@example.com&subject=my email!";
    //@"mailto:first@example.com?cc=second@example.com,third@example.com&subject=my email!";
    NSString *body = @"&body=email body!";

    NSString *email = [NSString stringWithFormat:@"%@%@", recipients, body];
    email = [email stringByAddingPercentEscapesUsingEncoding: NSUTF8StringEncoding];

    [[UIApplication sharedApplication] openURL: [NSURL URLWithString:email]];
}
- (void)mailComposeController:(MFMailComposeViewController *)controller
          didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error
{
    NSString *msg;

    switch (result)
    {
        case MFMailComposeResultCancelled:
            msg = @"邮件发送取消";
            break;
        case MFMailComposeResultSaved:
            msg = @"邮件保存成功";

//            [self alertWithTitle:nil msg:msg];
            break;
        case MFMailComposeResultSent:
            msg = @"邮件发送成功";
//            [self alertWithTitle:nil msg:msg];
            break;
        case MFMailComposeResultFailed:
            msg = @"邮件发送失败";
//            [self alertWithTitle:nil msg:msg];
            break;
        default:
            break;
    }
    NSLog(@"%@",msg);
    [self dismissModalViewControllerAnimated:YES];
}
- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

Resource Reference

• http://www.iashes.com/2014-12-365.html