APP应用发送邮件

使用MFMailComposeViewController发送邮件。
1、导入头文件

#import <MessageUI/MessageUI.h>

2、实现MFMailComposeViewControllerDelegate代理方法
3、示例

// 判断用户是否已设置邮件账户
    if ([MFMailComposeViewController canSendMail]) {
        // 弹出邮件发送视图
        MFMailComposeViewController *emailVC = [[MFMailComposeViewController alloc] init];
        // 设置邮件代理
        [emailVC setMailComposeDelegate:self];
        // 设置收件人
        [emailVC setToRecipients:@[kEmail]];
        // 设置抄送人
        // [_emailVC setCcRecipients:@[@"1622849369@qq.com"]];
        // 设置密送人
        // [_emailVC setBccRecipients:@[@"15690725786@163.com"]];
        // 设置邮件主题
        [emailVC setSubject:@"意见反馈【二维码识别】"];
        //设置邮件的正文内容
        NSString *emailContent = @"邮件内容: ";
        // 是否为HTML格式
        [emailVC setMessageBody:emailContent isHTML:NO];
        // 如使用HTML格式，则为以下代码
        // [mailCompose setMessageBody:@"<html><body><p>Hello</p><p>World！</p></body></html>" isHTML:YES];
        // 添加附件
        // UIImage *image = [UIImage imageNamed:@"qq"];
        // NSData *imageData = UIImagePNGRepresentation(image);
        // [mailCompose addAttachmentData:imageData mimeType:@"" fileName:@"qq.png"];
        // NSString *file = [[NSBundle mainBundle] pathForResource:@"EmptyPDF" ofType:@"pdf"];
        // NSData *pdf = [NSData dataWithContentsOfFile:file];
        // [mailCompose addAttachmentData:pdf mimeType:@"" fileName:@"EmptyPDF.pdf"];
        [self presentViewController:emailVC animated:YES completion:nil];
    } else {
        // 给出提示,设备未开启邮件服务
        InsertAlert(UIAlertViewStyleDefault, @"没有邮件帐户", @"请添加邮件帐户（添加方法：设置->邮件、通讯录、日历->添加帐户->其他->添加邮件帐户）", 0, nil, nil, kAlertRealized);
    }

- (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error
{
    switch (result) {
        case MFMailComposeResultCancelled:
            NSLog(@"Mail send canceled: 用户取消编辑");
            break;
        case MFMailComposeResultSaved:
            NSLog(@"Mail saved: 用户保存邮件");
            break;
        case MFMailComposeResultSent:
            NSLog(@"Mail sent: 用户点击发送");
            break;
        case MFMailComposeResultFailed:
            NSLog(@"Mail send errored: %@ : 用户尝试保存或发送邮件失败", [error localizedDescription]);
            break;
    }
    // 关闭邮件发送视图
    [self dismissViewControllerAnimated:YES completion:nil];
}

APP应用发送邮件

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