子视图中的UIInterfaceOrientation旋转不起作用

In my App I use a UITabbarController, which rotates perfectly to all UIInterfaceOrientations in all viewcontrollers. But when I add an UIView to the UIWindow afterwards it will not be added in the current UIInterfaceOrientation, but always in UInterfaceOrientationPortrait (which is default for the app). It won't rotate to a new orientation also. I add the ViewController by using:In my App I use a UITabbarController, which rot