如何在 iPhone 中填写电子邮件的“收件人”和“主题”？

Question

我的应用程序中有一个名为“联系我们”的按钮！有没有办法在 iPhone 中打开 Eamil 客户端，其中填入我提供的“收件人”和“主题”？

Answer 1

您将需要使用 MFMailComposeViewController 类。以下是苹果 MailComposer 示例

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

[picker setSubject:@"Hello from California!"];

// Set up recipients
NSArray *toRecipients = [NSArray arrayWithObject:@"[email protected]"]; 
[picker setToRecipients:toRecipients];

[self presentModalViewController:picker animated:YES];
[picker release];

： MailComposer 示例还向您展示了如何打开外部邮件应用程序：

NSString *recipients = @"mailto:[email protected]&subject=Hello from California!";
NSString *body = @"&body=It is raining in sunny California!";

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

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:email]];

Answer 2

查看 MFMailComposeViewController。您可以设置主题、收件人字段，甚至可以使用 HTML 填充正文。

Answer 3

当然可以。

- (void)emailExport:(NSString *)filePath
{
    MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
    picker.mailComposeDelegate = self;

    // Set the subject of email
    [picker setSubject:@"My desired subject"];

    // Add email addresses
    // Notice three sections: "to" "cc" and "bcc"   

    NSString *valueForEmail = @"[email protected]";
    NSString *valueForCCEmail = @"myCcEmail";
    if( valueForEmail == nil ||  [valueForEmail isEqualToString:@""])
    {
        UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"Please set an email address before sending a time entry!" message:nil delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
        [alert show];
        [alert release];        

        return;
    }
    else {
        [picker setToRecipients:[NSArray arrayWithObjects:valueForEmail, nil]];
    }

    if(valueForCCEmail != nil || ![valueForCCEmail isEqualToString:@""])
    {
        [picker setCcRecipients:[NSArray arrayWithObjects:valueForCCEmail, nil]];
    }

    // Fill out the email body text
    NSString *emailBody = @"My email body text.";

    // This is not an HTML formatted email
    [picker setMessageBody:emailBody isHTML:NO];

    // Show email view  
    [self presentModalViewController:picker animated:YES];

    // Release picker
    [picker release];
}