Created
November 2, 2014 12:48
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Loadingbar component for WKWebView
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| import UIKit | |
| import WebKit | |
| import LoadingBarKit | |
| class ViewController: UIViewController { | |
| @IBOutlet var loadingBar: LoadingBar! | |
| var webView: WKWebView? | |
| override func viewDidLoad() { | |
| super.viewDidLoad() | |
| self.webView?.addObserver(self, forKeyPath: "estimatedProgress", options: NSKeyValueObservingOptions.New, context: nil) | |
| } | |
| } | |
| deinit { | |
| self.webView?.removeObserver(self, forKeyPath: "estimatedProgress") | |
| } | |
| // MARK: - Progress monitoring (KVO) | |
| override func observeValueForKeyPath(keyPath: String, ofObject object: AnyObject, change: [NSObject : AnyObject], context: UnsafeMutablePointer<Void>) { | |
| if (keyPath == "estimatedProgress" && object as NSObject == self.webView!) { | |
| self.loadingBar.progress = Float(self.webView!.estimatedProgress) | |
| } | |
| } | |
| } |
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| // | |
| // LoadingBar.swift | |
| // | |
| import UIKit | |
| @IBDesignable | |
| public class LoadingBar: UIView { | |
| @IBInspectable public var progress: Float = 0.0 { | |
| didSet { | |
| UIView.animateWithDuration(0.1, animations: { () -> Void in | |
| var width = self.frame.size.width * CGFloat(self.progress) | |
| self.innerBar?.frame = CGRect(x: CGFloat(0.0), y: CGFloat(0.0), width: width, height: self.frame.size.height) | |
| if self.progress >= 1.0 { | |
| self.alpha = 0.0 | |
| } else { | |
| self.alpha = 1.0 | |
| } | |
| }) | |
| } | |
| } | |
| @IBInspectable var color: UIColor? { | |
| didSet { | |
| self.innerBar?.backgroundColor = self.color! | |
| } | |
| } | |
| var innerBar: UIView? | |
| override public func layoutSubviews() { | |
| super.layoutSubviews() | |
| self.userInteractionEnabled = false | |
| self.backgroundColor = UIColor.clearColor() | |
| if self.color == nil { | |
| self.color = self.tintColor | |
| } | |
| if innerBar == nil { | |
| var width = self.frame.size.width * CGFloat(self.progress) | |
| self.innerBar = UIView(frame: CGRect(x: CGFloat(0.0), y: CGFloat(0.0), width: width, height: self.frame.size.height)) | |
| self.innerBar?.backgroundColor = self.color | |
| self.addSubview(self.innerBar!) | |
| } | |
| } | |
| } |
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Any idea implementing this in swift 3
self.webView?.addObserver(self, forKeyPath: "estimatedProgress", options: NSKeyValueObservingOptions.New, context: nil)
need to be
self.webView?.addObserver(self, forKeyPath: "estimatedProgress", options: NSKeyValueObservingOptions.new, context: nil)
Just the .new insted of .New
But i am not able to observe the estimatedProgress value. Let me know if you have any ideas