调整UINavigationController布局问题的大小

Question

我正在尝试在扩展的UINavigationController中添加ADBannerView。 当横幅加载时，我会重新调整视图的大小：

CGRect contentFrame = [[UIScreen mainScreen] applicationFrame];
banner.currentContentSizeIdentifier = ADBannerContentSizeIdentifier320x50; 
bannerHeight = banner.bounds.size.height;

self.view.frame = CGRectMake(self.view.bounds.origin.x, 
                                  (self.view.bounds.origin.y), 
                                  self.view.bounds.size.width, 
                                  contentFrame.size.height - (bannerHeight));

但是UIView部分隐藏在导航栏下：here

知道出了什么问题吗？

感谢

[1]：

Answer 1

self.view.frame = CGRectMake(self.view.bounds.origin.x, 
                              (self.view.bounds.origin.y)+(bannerHeight), 
                              self.view.bounds.size.width, 
                              contentFrame.size.height - (bannerHeight));