ios - 为什么 MFMailComposeViewController 的取消或发送按钮不起作用？

Question

我有个问题...

我创建了一个 MFMailComposeViewController 并显示出来。

但是，发送和取消按钮都不起作用。

Answer 1

您必须在您的应用程序中添加此代码，

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

试试这个，它可以正常发送和取消按钮。

Answer 2

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

[controller setSubject:@"Important Data"];

用于 html 文件邮件

NSString *path=[[NSBundle mainBundle]pathForResource:@"table" ofType:@"html"];
NSFileHandle *readHandle=[NSFileHandle fileHandleForReadingAtPath:path];
htmlString = [[NSString alloc] initWithData: [readHandle readDataToEndOfFile] encoding:NSUTF8StringEncoding];

NSString *emailBody=[NSString stringWithFormat:@"Product Name         %@ \n Company Name       %@  \n Last Updated Date   %@ \n desired data \n %@  ",lblProductName.text,lblCompanyName.text,lblUpdateDate.text,htmlString];

[controller setMessageBody:emailBody isHTML:YES];

[self presentModalViewController:controller animated:YES];

[controller release];

Answer 3

今天我发现 Swift 3.0 为这个问题带来了一个新的函数签名。在此之前，甚至从未调用过 mailComposeController，并且邮件（尽管它确实发送了）只是卡在那里。当我改为下面时，它起作用了。

  public func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith: MFMailComposeResult, error: Error?) {

    self.dismiss(animated:true, completion: nil)


}