ios - 将 UISwitch 添加到 MFMailComposeViewController

Question

我已经添加了一个 UISwtich，现在我想知道如何将状态添加到电子邮件中，例如，如果它处于打开状态，我希望它在电子邮件中显示“打开”。目前我有这个。

- (IBAction)sendtoStudentathome:(id)sender {
MFMailComposeViewController *mailContoller = [[MFMailComposeViewController alloc]init];
[mailContoller setMailComposeDelegate:self];
NSString *email = @"admin@blah.co.uk";
NSArray *emailArray = [[NSArray alloc]initWithObjects:email, nil];
NSString *message = [@[_NameofResident.text, _NameofStudent.text, _AppointmentTime.date,     _NextAppointmentTime.date, _Confirmed.text, myswitch]componentsJoinedByString: @"\n"];
[mailContoller setMessageBody:message isHTML:NO];
[mailContoller setToRecipients:emailArray];
[mailContoller setSubject:@"Feedback"];
[self presentViewController:mailContoller animated:YES completion:nil];
}

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
[[self NameofResident] resignFirstResponder];
}

-(void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error
{
[self dismissViewControllerAnimated:YES completion:nil];
}

在邮件中，我有文本字段可以完美地添加到电子邮件中，唯一没有正确添加的是标记为 myswitch 的 UISwitch。

提前致谢。

Answer 1

请引用以下代码，创建一个 NSString 属性，最初将其文本设置为“off”，因为开关的初始状态为关闭，并通过使用开关状态更改文本。

    @property (nonatomic, retain) NSString *strOnOff;

      UISwitch *onoff = [[UISwitch alloc] initWithFrame: CGRectZero];
            onoff.frame = CGRectMake(0,100,100,50);
            strOnOff = @"off";
            [onoff addTarget: self action: @selector(flip:) forControlEvents:UIControlEventValueChanged];
            // Set the desired frame location of onoff here
            [self addSubview: onoff];

-(void)gototest:(UIButton*)sender
{

    MFMailComposeViewController *mailContoller = [[MFMailComposeViewController alloc]init];
    [mailContoller setMailComposeDelegate:self];
    NSString *email = @"admin@blah.co.uk";
    NSArray *emailArray = [[NSArray alloc]initWithObjects:email, nil];
    NSString *message = [NSString stringWithFormat:@"%@",strOnOff];
    [mailContoller setMessageBody:message isHTML:NO];
    [mailContoller setToRecipients:emailArray];
    [mailContoller setSubject:@"Feedback"];
    [delegate presentViewController:mailContoller animated:YES completion:nil];
}

        - (void)flip:(id)sender {
            if (onoff.on)
            {
                strOnOff = @"On";

            }
            else
            {
                strOnOff = @"Off";
            }
        }