如何更改导航栏的背景颜色和导航文本颜色

Question

I want the background color of the navigation bar to be black and the text on the navigation bar to be white.

Everything looks fine on my simulator as shown below:

However, when I test it on the actual device w/ 7.1, even though the background color of navigation bar is orange, the title of the screen is black.

This is what I'm doing in my application delegate:

@window.rootViewController = UINavigationController.alloc.initWithRootViewController(main_controller)
@window.rootViewController.navigationBar.barTintColor = '#DF533B'.to_color
@window.rootViewController.navigationBar.translucent = true
@window.rootViewController.navigationBar.tintColor = UIColor.whiteColor
@window.rootViewController.navigationBar.setTitleTextAttributes({
    UITextAttributeTextColor => UIColor.whiteColor
})

my deployment_target is 7.0 and app.sdk_version is 7.1

Should I be putting this code in viewDidLoad of all my controllers?

Answer 1

Not familiar with RubyMotion, but you should use the UIAppearance proxy:

[[UINavigationBar appearance] setBarTintColor:[self navBarColor]];

[[UINavigationBar appearance] setTintColor:[self navBarTitleColor]];

[[UINavigationBar appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName : [self navBarTitleColor], NSFontAttributeName : [self titleFont]}];

You should do this before you load your main window in your AppDelegate.

Answer 2

只是要添加到对我来说似乎正确的Moby答案中，请确保将其添加到应用程序委托的didFinishLaunchingWithOptions中。