UINavigationBar appearance in RubyMotion not working

ios, ios5, objective-c, rubymotion

Solution

`UITextAttributeFont`, etc. are actual constants, but when you use them in a newer Ruby 1.9-style hash assignment, it's converting them to symbols.

The easiest way around this is to use the older hash-rocket assignment style (make sure to not put colons in front of the UIText... items):

navigationBar.setTitleTextAttributes({
  UITextAttributeFont => UIFont.fontWithName('Trebuchet MS', size:24),
  UITextAttributeTextShadowColor => UIColor.colorWithWhite(0.0, alpha:0.4),
  UITextAttributeTextColor => UIColor.blueColor
})

Problem

I'm trying to customize the navigation bar in a RubyMotion app but can't seem to change the title text font or color. I can set the background image and tint but not the title attributes. ``` class AppDelegate def application(application, didFinishLaunchingWithOptions:launchOptions) @window = UIWindow.alloc.initWithFrame(UIScreen.mainScreen.bounds) navigationBar = UINavigationBar.appearance #navigationBar.setBackgroundImage(UIImage.imageNamed('navigation-bar-background.png'), forBarMetrics: UIBarMetricsDefault) #navigationBar.setTintColor(UIColor.greenColor) navigationBar.setTitleTextAttributes({ UITextAttributeFont: UIFont.fontWithName('Trebuchet MS', size:24), UITextAttributeTextShadowColor: UIColor.colorWithWhite(0.0, alpha:0.4), UITextAttributeTextColor: UIColor.blueColor }) puts navigationBar.titleTextAttributes.inspect @window.rootViewController = UINavigationController.alloc.initWithRootViewController(MainMenuController.alloc.init) @window.rootViewController.wantsFullScreenLayout = true @window.makeKeyAndVisible true end end ``` The console output shows this for the inspect statement: ``` {:UITextAttributeFont=>#<UICFFont:0x963aa70>, :UITextAttributeTextShadowColor=>UIColor.color(0x0, 0.0), :UITextAttributeTextColor=>UIColor.blueColor} ``` So it appears that everything is being set correctly but all I get is the standard blue navigation bar with white text.

Original source