How can I create a horizontal gradient background for my iOS nav bar?

Question

I know how to set a navigation bar background color (with barTintColor), but now I am working on an iOS app that calls for a horizontal gradient (not the typical vertical gradie

Answer 1

Swift

Add this function in global class

func setHorizontalGradientColor(view: UIView) {
    let gradientLayer = CAGradientLayer()
    var updatedFrame = view.bounds
    updatedFrame.size.height += 20
    gradientLayer.frame = updatedFrame
    gradientLayer.colors = [UIColor.black.cgColor, UIColor.blue.cgColor]
    gradientLayer.startPoint = CGPoint(x: 0.0, y: 0.5)
    gradientLayer.endPoint = CGPoint(x: 1.0, y: 0.5)
    view.layer.insertSublayer(gradientLayer, at: 0)
}

Use in anywhere:

setHorizontalGradientColor(view: self.bgView)