iOS8上/
iphone
设置时
navigationbar.translucent = yes;
如果还设置
blueVC.hidesBottomBarWhenPushed = yes;
推ViewController,导航栏右上角显示黑色.
检测结果：
默认情况下,黑色区域是UIWindow.我将UIWindow背景颜色更改为白色并修复了问题.但这只是看起来更好,并没有完全解决.
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iOS7 strange animation when using hidesBottomBarWhenPushed
self.tabBarController.tabBar.hidden=YES;
解决方法
试试这段代码：
self.navigationController.view.backgroundColor = [UIColor whiteColor];
我认为它类似于这篇文章：Dark shadow on navigation bar during segue transition after upgrading to Xcode 5.1 and iOS 7.1
