iOS7 - Change UINavigationBar border color

Question

Is it possible to change the grey border-bottom color of the UINavigationBar in iOS7?

I already tried to remove to border, but this is not working:

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Answer 1

I'm using RubyMotion with the RedPotion gem, which includes a StandardAppearance class. This is what I did!

Put this line at the top of your app_delegate.rb, just before the on_load method:

ApplicationStylesheet.new(nil).application_setup

Then, in your application_stylesheet.rb, put this as the last line in the application_setup method:

StandardAppearance.apply app.window

And then this is my StandardAppearance class:

class StandardAppearance
  def self.apply(window)
    Dispatch.once do

      UINavigationBar.appearance.tap do |o|
        o.setBackgroundImage(UIImage.alloc.init, forBarMetrics: UIBarMetricsDefault)
        o.shadowImage = UIImage.alloc.init
      end

    end
  end
end