iOS PopoVer NavigationBar不显示BarTintColor

Question

在我们的应用程序中，我们用下面的代码设置导航条和工具栏颜色。使用iOS 8.x，这是很好的工作方式。最近，我用iOS 7.x测试了这个应用程序，没有显示颜色。条形图是透明的，文本是白色的(所以这是有效的.)

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent];

[[UINavigationBar appearance] setBarTintColor:[UIColor colorWithRed:255.0/255.0 green:167.0/255.0 blue:0.0/255.0 alpha:1.0]];
[[UINavigationBar appearance] setTintColor:[UIColor whiteColor]];

[[UIToolbar appearance] setBarTintColor:[UIColor colorWithRed:255.0/255.0 green:167.0/255.0 blue:0.0/255.0 alpha:1.0]];
[[UIToolbar appearance] setTintColor:[UIColor whiteColor]];

[[UINavigationBar appearance] setTitleTextAttributes:
 [NSDictionary dictionaryWithObjectsAndKeys:
  [UIColor whiteColor], NSForegroundColorAttributeName,
  [UIColor clearColor], UITextAttributeTextShadowColor,
  [NSValue valueWithUIOffset:UIOffsetMake(0, -1)], UITextAttributeTextShadowOffset,
  [UIFont boldSystemFontOfSize:19.0], NSFontAttributeName,
nil]];

我希望有人能解释我怎么解决这个问题。设置条形背景色对我来说不是解决办法，因为我会使用透明度。

Answer 1

此问题的解决方案是再次在弹出ViewController中为iOS 7手动设置颜色值。

self.navigationController.toolbar.barStyle = UIBarStyleBlackTranslucent;
[self.navigationController.toolbar setTintColor:[UIColor whiteColor]];
[self.navigationController.toolbar setBarTintColor:[UIColor colorWithRed:255.0/255.0 green:167.0/255.0 blue:0.0/255.0 alpha:1.0]];

self.navigationController.navigationBar.barStyle = UIBarStyleBlackTranslucent; 
[self.navigationController.navigationBar setTintColor:[UIColor whiteColor]];
[self.navigationController.navigationBar setBarTintColor:[UIColor colorWithRed:255.0/255.0 green:167.0/255.0 blue:0.0/255.0 alpha:1.0]];