How to create a new class from UIVisualEffectView and UIActivityIndicatorView - ios

Question

I've made a busy indicator that works really well, so long as it's in the ViewController I want to display the indicator in. I attempted to move this over to a new class of type UIView, but can't get anything to appear in the ViewController.
This is the working code, that is not it's own type:
//Create a busy indicator that can be shown by changing a single variable
var blur: UIVisualEffectView?
var spinner: UIActivityIndicatorView?
var showingActivity: Bool = false {
didSet{
switch showingActivity {
case true:
blur = UIVisualEffectView(effect: UIBlurEffect(style: UIBlurEffectStyle.Dark))
blur!.frame = CGRectMake(100, 100, 150, 150)
blur!.center = self.view.center
blur!.layer.cornerRadius = 10
blur!.clipsToBounds = true
self.view.addSubview(blur!)
spinner = UIActivityIndicatorView(activityIndicatorStyle: UIActivityIndicatorViewStyle.WhiteLarge)
spinner!.frame = CGRectMake(0, 0, 50, 50)
spinner!.center = self.view.center
spinner!.hidesWhenStopped = true
spinner!.startAnimating()
self.view.addSubview(spinner!)
UIApplication.sharedApplication().networkActivityIndicatorVisible = true //network activity option
case false:
blur?.removeFromSuperview()
spinner?.removeFromSuperview()
blur = nil
spinner = nil
UIApplication.sharedApplication().networkActivityIndicatorVisible = false //network activity option
default: break
}
}
}
func toggleNetworkActivity() {
showingActivity = !showingActivity
}
This is the code that doesn't seem to create anything.
class busy : UIView {
var blur = UIVisualEffectView(effect: UIBlurEffect(style: UIBlurEffectStyle.Dark))
var spinner = UIActivityIndicatorView(activityIndicatorStyle: UIActivityIndicatorViewStyle.WhiteLarge)
init() {
let frame = CGRect(x: 0, y: 0, width: 300, height: 300)
super.init(frame: frame)
blur.frame = CGRectMake(100, 100, 150, 150)
blur.center = self.center
blur.layer.cornerRadius = 10
blur.clipsToBounds = true
spinner.frame = CGRectMake(0, 0, 50, 50)
spinner.center = self.center
spinner.hidesWhenStopped = true
spinner.startAnimating()
self.setNeedsDisplay()
}
required init(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
And in ViewDidLoad:
var test = busy()
test.center = self.view.center
self.view.addSubview(test)

Answer 1

Figured it out. Here is the code, if anyone is interested. But, is this the right way to do this kind of task?
class busy : UIView {
private var blur = UIVisualEffectView(effect: UIBlurEffect(style: UIBlurEffectStyle.Dark))
private var spinner = UIActivityIndicatorView(activityIndicatorStyle: UIActivityIndicatorViewStyle.WhiteLarge)
var isActive: Bool = false
override init (frame : CGRect) {
super.init(frame : frame)
}
required init(coder aDecoder: NSCoder) {
fatalError("This class does not support NSCoding")
}
func startActivity() {
let x = UIScreen.mainScreen().bounds.width/2
let y = UIScreen.mainScreen().bounds.height/2
blur.frame = CGRectMake(100, 100, 150, 150)
blur.layer.cornerRadius = 10
blur.center = CGPoint(x: x, y: y)
blur.clipsToBounds = true
spinner.frame = CGRectMake(0, 0, 50, 50)
spinner.hidden = false
spinner.center = CGPoint(x: x, y: y)
spinner.startAnimating()
super.addSubview(blur)
super.addSubview(spinner)
isActive = true
}
func stopActivity() {
blur.removeFromSuperview()
spinner.removeFromSuperview()
isActive = false
}
}
And then in use:
#IBAction func toggle() {
if test.isActive {
test.stopActivity()
test.removeFromSuperview()
println("Stopping")
} else {
test.startActivity()
self.view.addSubview(test)
println("Starting")
}
}