MFMailComposeViewController模型不显示

Question

我在我的电子邮件应用程序中展示了MFMailComposeViewController.但是视图没有显示,只显示上部SEND和CANCEL按钮.

这是在点击"Email to Subscribe"按钮后显示的视图的屏幕截图.

我查看了所有相关代码.我添加了"MessageUI"框架并导入

MessageUI/MessageUI.h , MessageUI/MFMailComposeViewController.h

我使用了以下代码:

 - (void)viewWillAppear:(BOOL)animated {

     [self.view setFrame:CGRectMake(0, 62, 320, 418)];

     [APPDELEGATE.window addSubview:self.view];

     [self.navigationController.navigationBar setHidden:NO];
     self.navigationItem.title=@"Free Subscription";
     [super viewWillAppear:animated]; }


 -(void)viewWillDisappear:(BOOL)animated {
     [self.view removeFromSuperview];
     [super viewWillDisappear:animated]; }



     -(IBAction)btnEmailPressed {
         MFMailComposeViewController* Apicker = [[MFMailComposeViewController alloc] init];
         if (Apicker != nil)
         {

         [Apicker setSubject:@"Free Subscription"];

         [Apicker setMessageBody:@" " isHTML:NO];

         NSArray *toRecipients = [NSArray arrayWithObjects:@"info@xyz.com", nil];
         [Apicker setToRecipients:toRecipients];

         Apicker.mailComposeDelegate = self;

         if([MFMailComposeViewController canSendMail])
         {
             [self presentModalViewController:Apicker animated:YES];
         }
         else
         {

         }
         [Apicker release];
     } }


     -(void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError
     *)error{

     NSString *message;

     switch (result) {
         case MFMailComposeResultCancelled:
             message =@"You have canceled your email.";
             break;
         case MFMailComposeResultFailed:
             message=@"Your email is failed";
             break;
         case MFMailComposeResultSent:
             message=@"Your email was successfully sent.";
             break;
         case MFMailComposeResultSaved:
             message=@" Your email has been saved";
             break;

         default:
             message=@" Your email is not send";
             break;
     }
     UIAlertView *alt=[[UIAlertView alloc]initWithTitle:@"" message:message delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil];

     [alt show];
     [alt release];

     [self dismissModalViewControllerAnimated:YES];
      }

我无法理解这个问题.

谢谢.

Answer 1

它适用于IOS 6

-(void)email{
    MFMailComposeViewController *composer=[[MFMailComposeViewController alloc]init];
    [composer setMailComposeDelegate:self];
    if ([MFMailComposeViewController canSendMail]) {
        [composer setToRecipients:[NSArray arrayWithObjects:@"xyz@gmail.com", nil]];
        [composer setSubject:@""];

        //    [composer.setSubject.placeholder = [NSLocalizedString(@"This is a placeholder",)];

        [composer setMessageBody:@"" isHTML:NO];
        [composer setModalTransitionStyle:UIModalTransitionStyleCrossDissolve];
        [self presentViewController:composer animated:YES completion:nil];
    }
    else {
    }
}
-(void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error{
    if (error) {
        UIAlertView *alert=[[UIAlertView alloc]initWithTitle:@"error" message:[NSString stringWithFormat:@"error %@",[error description]] delegate:nil cancelButtonTitle:@"dismiss" otherButtonTitles:nil, nil];
        [alert show];
        [self dismissViewControllerAnimated:YES completion:nil];
    }
    else {
        [self dismissViewControllerAnimated:YES completion:nil];
    }
}

试一试

适用于iOS 5

-(void)email:(id)sender{
    MFMailComposeViewController *composer=[[MFMailComposeViewController alloc]init];
    [composer setMailComposeDelegate:self];
    if ([MFMailComposeViewController canSendMail]) {
        [composer setToRecipients:[NSArray arrayWithObjects:@"xyz@gmail.com", nil]];
        [composer setSubject:@""];

        //    [composer.setSubject.placeholder = [NSLocalizedString(@"This is a placeholder",)];

        [composer setMessageBody:@"" isHTML:NO];
        [composer setModalTransitionStyle:UIModalTransitionStyleCrossDissolve];
        [self presentModalViewController:composer animated:YES];
    }
    else {
    }
}
-(void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error{
    if (error) {
        UIAlertView *alert=[[UIAlertView alloc]initWithTitle:@"error" message:[NSString stringWithFormat:@"error %@",[error description]] delegate:nil cancelButtonTitle:@"dismiss" otherButtonTitles:nil, nil];
        [alert show];
        [self dismissModalViewControllerAnimated:YES];
    }
    else {
        [self dismissModalViewControllerAnimated:YES];
    }
}