Custom image with rotation in activity indicator for iPhone application in swift

Question

I want my company logo as in activity indicator with rotation in my iPhone application. I am working on swift. Can anyone suggest me some third party library other than SVProgressHUD as this is not providing any custom image rotation.

If someone can suggest an custom code then also it will be appreciated.

Answer 1

You can try something like this:

final class MyActivityIndicator: UIImageView {

    override func startAnimating() {
        isHidden = false
        rotate()
    }

    override func stopAnimating() {
        isHidden = true
        removeRotation()
    }

    private func rotate() {
        let rotation = CABasicAnimation(keyPath: "transform.rotation.z")
        rotation.toValue = NSNumber(value: Double.pi * 2)
        rotation.duration = 1
        rotation.isCumulative = true
        rotation.repeatCount = Float.greatestFiniteMagnitude
        layer.add(rotation, forKey: "rotationAnimation")
    }

    private func removeRotation() {
        layer.removeAnimation(forKey: "rotationAnimation")
    }
}

Usage:

let activityIndicator = MyActivityIndicator(frame: CGRect(x: 0, y: 0, width: 100, height: 100))
activityIndicator.image = UIImage(named: "TOU IMAGE")
view.addSubview(activityIndicator)
activityIndicator.startAnimating()