objective-c - 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，并填写我提供的“收件人”和“主题”？

Answer 1

您将需要使用 MFMailComposeViewController类(class)。以下是 Apple 的 MailComposer example 的相关部分:

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

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

// Set up recipients
NSArray *toRecipients = [NSArray arrayWithObject:@"first@example.com"]; 
[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:first@example.com&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]];