Subclassing UINavigationBar in Swift

Question

I'm trying to create a custom UINavigationBar class and then use the Storyboard to set it as the class of my UINavigationController's NavigationBar.

Here's the code of my UINavigationBar class:

class CustomNavBar: UINavigationBar {

    override func drawRect(rect: CGRect) {
        super.drawRect(rect)
        // Drawing code
        self.backgroundColor = UIColor.orangeColor()

        let myLabel = UILabel(frame: CGRect(x: 0, y: 4, width: 600, height: 36))
        myLabel.backgroundColor = UIColor.purpleColor()
        myLabel.textColor = UIColor.yellowColor()
        myLabel.text = "Custom NavBar!"

        self.addSubview(myLabel)
    }

}

Then, in Interface Builder, I use the Identity Inspector to set this as the class of the NavigationBar of my UINavigationController.

When I run the App - it freezes. It hangs up on the LaunchScreen.xib and doesn't do anything.

Why is doing that? What's the right way to go about doing this?

Answer 1

On Swift:

File-New-File- iOS Source - Cocoa Touch class- Select Subclass of : UINavigationBar and Name it - CustomNavigationBar.

class CustomNavigationBar: UINavigationBar {

        override init(frame: CGRect) {
            super.init(frame: frame)

            self.backgroundColor = UIColor.redColor()

        }
        required init(coder aDecoder: NSCoder) {
            super.init(coder: aDecoder)!
        }
        override func drawRect(rect: CGRect) {

        }   
    }