iphone - ViewControllers 之间的转换不起作用

Question

所以我得到了这个按钮，它带有一个推送到 StartViewController 的 if 语句。我在这个 View Controller 的 viewDidLoad 中做了一个 NSLog@"transition successful" 来检查是否进行了转换。

在日志中它显示转换成功但在屏幕上未进行转换。

代码如下:

-(IBAction)initialButton:(id)sender {
    NSLog(@"initialButton clicked");

   if([userEmail.text length] <4)
   {
       [WCAlertView showAlertWithTitle:@"Email is empty" message:@"You haven't entered an email yet. Please enter one so we can sent you the shipping labels." customizationBlock:^(WCAlertView *alertView) {
           alertView.style = WCAlertViewStyleBlackHatched;
       } completionBlock:^(NSUInteger buttonIndex, WCAlertView *alertView) {
           if (buttonIndex == 0) {
               NSLog(@"Cancel");
           } else {
               NSLog(@"Ok");
           }
       } cancelButtonTitle:@"Cancel" otherButtonTitles:@"Ok", nil];
   }
   else
   {

       StartViewController *startViewController = [[StartViewController alloc] init];
       self.transitionController = [[[TransitionController alloc] initWithViewController:startViewController] initWithNibName:@"StartViewController" bundle:nil];
       [initialViewController.view removeFromSuperview];
       self.window.rootViewController = self.startViewController;

   }


}

这是日志:

2012-12-14 09:22:55.431 Janssenpakketapp[24165:c07] initialViewController loaded
2012-12-14 09:23:04.021 Janssenpakketapp[24165:c07] initialButton clicked
2012-12-14 09:23:06.116 Janssenpakketapp[24165:c07] Ok
2012-12-14 09:23:11.909 Janssenpakketapp[24165:c07] initialButton clicked
2012-12-14 09:23:11.911 Janssenpakketapp[24165:c07] transition succesful

Answer 1

新更新:这应该有效:

StartViewController *startViewController = [[StartViewController alloc] init];
    [[UIApplication sharedApplication].delegate.transitionController transitionToViewController:startViewController withOptions:UIViewAnimationOptionTransitionFlipFromRight];