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对于我的通用应用程序在 iPad 上运行时,this.NavigationController 会返回一个 NavigationController。
当我以 iPad 为目标运行它时,它为空。所以我不能使用它。
它是初始视图控制器。
Its my mistake,
For iPad design I used push RootNavigationController to Login.
It would be RelationShip.
Sorry for stealing your time friends.