发送邮件--MFMailComposeViewController

只能在真机使用.

模拟器没有E-mail发送功能.无法调用

#import "EmailViewController.h"

#import <UIKit/UIKit.h>

#import <MessageUI/MFMailComposeViewController.h>

 

@interface EmailViewController ()<MFMailComposeViewControllerDelegate>

 

@end

 

@implementation EmailViewController

 

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view.

    

    UIButton *btn=[UIButton buttonWithType:UIButtonTypeCustom];

    btn.frame=CGRectMake(20, 100, 200, 100);

    

    [btn addTarget:self action:@selector(click) forControlEvents:UIControlEventTouchUpInside];

    

    [self.view addSubview:btn];

    

}

 

-(void)click

{

    Class mailClass = (NSClassFromString(@"MFMailComposeViewController"));

    if (!mailClass) {

        [self alertWithMessage:@"当前系统版本不支持应用内发送邮件功能，您可以使用mailto方法代替"];

        return;

    }

    if (![mailClass canSendMail]) {

        [self alertWithMessage:@"用户没有设置邮件账户"];

        return;

    }

    [self displayMailPicker];

    

 

}

 

- (void)displayMailPicker

{

    MFMailComposeViewController *mailPicker = [[MFMailComposeViewController alloc] init];

    mailPicker.mailComposeDelegate = self;

    

    //设置主题

    [mailPicker setSubject: @"主题"];

    //添加收件人

    NSArray *toRecipients = [NSArray arrayWithObject: @"liuliuliu@hotmail.com"];

    [mailPicker setToRecipients: toRecipients];

    //添加抄送

    //NSArray *ccRecipients = [NSArray arrayWithObjects:@"second@example.com", @"third@example.com", nil];

    //[mailPicker setCcRecipients:ccRecipients];

    //添加密送

    //NSArray *bccRecipients = [NSArray arrayWithObjects:@"fourth@example.com", nil];

    //[mailPicker setBccRecipients:bccRecipients];

    

    // 添加一张图片

    UIImage *addPic = [UIImage imageNamed: @"Icon@2x.png"];

    NSData *imageData = UIImagePNGRepresentation(addPic);            // png

    //关于mimeType：http://www.iana.org/assignments/media-types/index.html

    [mailPicker addAttachmentData: imageData mimeType: @"" fileName: @"Icon.png"];

    

    NSString *emailBody = @"<font color='red'>eMail</font> 正文";

    [mailPicker setMessageBody:emailBody isHTML:YES];

    //[self presentModalViewController: mailPicker animated:YES];

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

}

 

#pragma mark - 实现 MFMailComposeViewControllerDelegate

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

{

    //关闭邮件发送窗口

    //[self dismissModalViewControllerAnimated:YES];

    [self dismissViewControllerAnimated:YES completion:nil];

    NSString *msg;

    switch (result) {

        case MFMailComposeResultCancelled:

            msg = @"用户取消编辑邮件";

            break;

        case MFMailComposeResultSaved:

            msg = @"用户成功保存邮件";

            break;

        case MFMailComposeResultSent:

            msg = @"用户点击发送，将邮件放到队列中，还没发送";

            break;

        case MFMailComposeResultFailed:

            msg = @"用户试图保存或者发送邮件失败";

            break;

        default:

            msg = @"";

            break;

    }

    [self alertWithMessage:msg];

}

 

 

- (void)alertWithMessage:(NSString*)message

{

    UIAlertView *alert = [[UIAlertView alloc]initWithTitle:nil

                                                   message:message

                                                  delegate:nil

                                         cancelButtonTitle:@"确定"

                                         otherButtonTitles:nil, nil];

    [alert show];

}