如何根据按下的按钮填充电子邮件收件人？

Question

我有一个适用于 3 个不同办公室的应用程序，我希望能够选择将生成的整理数据通过电子邮件发送到哪个办公室。我想为每个办公室使用不同的按钮，该按钮将自动填充电子邮件收件人，然后最后的按钮将整理所有信息并将其全部附加到电子邮件中。有没有办法做到这一点？我已经弄清楚了发送按钮，它填充了我无法解决的收件人。

这是我拥有的电子邮件部分，但由 1 个电子邮件地址填充，而不是取决于此刻按下的按钮。

    - (IBAction)checkData:(id)sender
{




    unsigned int x,a = 0;
    NSMutableString *emailmessage;
    emailmessage = [NSMutableString stringWithFormat: @""];

    for (x=0; x<9; x++)
    {
        switch (x) {
            case 0:
                if (nameTextField.text == nil) {
                    [emailmessage appendString:@"Name, "];
                    a=1;

                }
                break;

            case 1:
                if (emailTextField.text == nil)
                {
                    [emailmessage appendString:@"Email Address, "];
                    a=1;
                }
                break;

            case 2:
                if (dateLabel.text == nil)
                {
                    [emailmessage appendString:@"Date and Time of Near Miss, "];
                    a=1;
                }
                break;


            case 3:
                if (locationTextField.text == nil)
                {
                    [emailmessage appendString:@"Location of Near Miss, "];
                    a=1;
                }
                break;

            case 4:
                if (locLabel.text == nil)
                {
                    [emailmessage appendString:@"GPS Location, "];
                    a=1;
                }
                break;

            case 5:
                if (observersTextField.text == nil)
                {
                    [emailmessage appendString:@"Observers Team, "];
                    a=1;
                }
                break;
            case 6:
                if (affectedTextField.text == nil)
                {
                    [emailmessage appendString:@"Affected Team, "];
                    a=1;
                }
                break;
            case 7:
                if (catLabel.text == nil)
                {
                    [emailmessage appendString:@"Rating Classification, "];
                    a=1;
                }
                break;
            case 8:
                if (onOffLabel.text == nil)
                {
                    [emailmessage appendString:@"Third Party?, "];
                    a=1;
                }
                break;
            case 9:
                if (mlabelcategory.text == nil)
                {
                    [emailmessage appendString:@"Category, "];
                    a=1;
                }
                break;
            case 10:
                if (messageTextView.text == nil)
                {
                    [emailmessage appendString:@"Observation Description, "];
                    a=1;
                }
                break;
            case 11:
                if (activityTextView.text == nil)
                {
                    [emailmessage appendString:@"Type of Work Activity, "];
                    a=1;
                }

                break;
            case 12:
                if (imageView.image == nil)
                {
                    [emailmessage appendString:@"Image, "];
                    a=1;
                }
                break;


            default:
                break;
        }


    }



    {
        name = nameTextField.text;
        emailaddress = emailTextField.text;
        date = dateLabel.text;

        location = locationTypeBtn.text;
        observers = originatorTypeBtn.text;
        affected = destinationTypeBtn.text;
        rating = catLabel.text;
        thirdparty = onOffLabel.text;
        category = categoryTypeBtn.text;
        message = messageTextView.text;
        activity = activityTextView.text;
        gps = locLabel.text;




        NSMutableString *nearmissreport;
        nearmissreport = [NSMutableString stringWithFormat: @"<br><br> <b>Name:</b> %@ <br> <b>Email Address:</b> %@ <br><br> <b>Date & Time of Near Miss:</b> %@ <br><br> <b>Location of Near Miss:</b> %@ <br> <b>GPS Location:</b> %@ <br><br> <b>Observers Team:</b> %@ <br> <b>Affected Team:</b> %@ <br><br> <b>Rating Classification:</b> %@ <br><br> %@ <br><br> <b>Category:</b> %@ <br><b>Observation Description:</b> %@ <br><br> <b>Type of Work Activity:</b> %@ <br><br><b>Image:</b><br>", name, emailaddress, date, location, gps, observers, affected, rating, thirdparty, category, message, activity];

        NSLog(@"Near Miss Report: %@", nearmissreport);

        NSMutableString *testoMail;
        testoMail = [NSMutableString stringWithFormat: nearmissreport];

        NSLog(@"%@", testoMail);


        //MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
        MFMailComposeViewController  *picker = [[MFMailComposeViewController  alloc] init];
        picker.mailComposeDelegate = self;

        [picker setSubject: rating];

        // Set up the recipients.
        NSArray *toRecipients = [NSArray arrayWithObjects:@"example@example.com",nil];

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

        [picker setToRecipients:toRecipients];
        //[picker setCcRecipients:ccRecipients];
        //[picker setBccRecipients:bccRecipients];

        // Attach an image to the email.

        NSData *imageData = UIImagePNGRepresentation([imageView image]);
        [picker addAttachmentData:imageData mimeType:@"image/png" fileName:@"NearMiss"];

        // Fill out the email body text.
        //NSMutableString *emailBody;
        testoMail = [NSMutableString stringWithFormat: @"%@", testoMail];

        [picker setMessageBody:testoMail isHTML:YES]; //HTML!!!!!!

        // Present the mail composition interface.
        [self presentViewController:picker animated:YES completion:nil];
    }
}


// The mail compose view controller delegate method
- (void)mailComposeController:(MFMailComposeViewController *)controller
          didFinishWithResult:(MFMailComposeResult)result
                        error:(NSError *)error
{
    [self dismissModalViewControllerAnimated:YES];
}

Answer 1

为什么不实现按下按钮时调用的方法，从传入的信息中解析出按钮的 id，然后相应地设置电子邮件的“to”字段？

Answer 2

-(IBAction)buttonPressed:(id)sender{
UIButton *button = (UIButton *)sender;
NSLog(@"%d", [button tag]);
switch(button.tag) {
case 1 :
// set label.text = example1@example.com
break;
case 2 :
// set label.text = example2@example.com
break;
}
}

Answer 3

试试这个

- (IBAction)sendEmail:(id)sender {
    NSMutableString *report = [NSMutableString stringWithFormat: @"<br><br> <b>Name:</b> %@ <br> <b>Email Address:</b> %@ <br><br> <b>Date & Time of Near Miss:</b> %@ <br><br> <b>Location of Near Miss:</b> %@ <br> <b>GPS Location:</b> %@ <br><br> <b>Observers Team:</b> %@ <br> <b>Affected Team:</b> %@ <br><br> <b>Rating Classification:</b> %@ <br><br> %@ <br><br> <b>Category:</b> %@ <br><b>Observation Description:</b> %@ <br><br> <b>Type of Work Activity:</b> %@ <br><br><b>Image:</b><br>", name, emailaddress, date, location, gps, observers, affected, rating, thirdparty, category, message, activity];
    NSLog(@"Near Miss Report: %@", report);

    NSMutableString *testoMail = [NSMutableString stringWithFormat:report];
    NSLog(@"%@", testoMail);

    MFMailComposeViewController  *picker = [[MFMailComposeViewController  alloc] init];
    picker.mailComposeDelegate = self;

    [picker setSubject: rating];

    // Set up the recipients.
    NSArray *toRecipients;
    NSArray *ccRecipients;
    NSArray *bccRecipients;

    switch([sender tag]) {
        case 0 : {
            // set label.text = example1@example.com
            toRecipients = [NSArray arrayWithObjects:@"example@example.com",nil];
            ccRecipients = [NSArray arrayWithObjects:@"second@example.com",@"third@example.com", nil];
            bccRecipients = [NSArray arrayWithObjects:@"four@example.com",nil];
            break;
        }
        case 1 : {
            // set label.text = example2@example.com
            toRecipients = [NSArray arrayWithObjects:@"example@example.com",nil];
            ccRecipients = [NSArray arrayWithObjects:@"second@example.com",@"third@example.com", nil];
            bccRecipients = [NSArray arrayWithObjects:@"four@example.com",nil];
            break;
        }
        case 2 : {
            // set label.text = example2@example.com
            toRecipients = [NSArray arrayWithObjects:@"example@example.com",nil];
            ccRecipients = [NSArray arrayWithObjects:@"second@example.com",@"third@example.com", nil];
            bccRecipients = [NSArray arrayWithObjects:@"four@example.com",nil];
            break;
    }
}
    if(toRecipients.length >0) {
    [picker setToRecipients:toRecipients];
}

if(ccRecipients.length >0) {
    [picker setCcRecipients:ccRecipients];
}

if(bccRecipients.length >0) {
    [picker setBccRecipients:bccRecipients];
}

// Attach an image to the email.
NSData *imageData = UIImagePNGRepresentation([imageView image]);
[picker addAttachmentData:imageData mimeType:@"image/png" fileName:@"NearMiss"];

// Fill out the email body text.
//NSMutableString *emailBody;
testoMail = [NSMutableString stringWithFormat: @"%@", testoMail];

[picker setMessageBody:testoMail isHTML:YES]; //HTML!!!!!!

// Present the mail composition interface.
[self presentViewController:picker animated:YES completion:nil];

}