Evaluating Javascript using WKWebView in iOS

Sample of page loaded in web view: <html> <body> <script> function getWindowInfo() { return { width: window.innerWidth || document.body.clientWidth, height: window.innerHeight || document.body.clientHeight } }; </script> </body> </html> In a UIView or UIViewController: import WebKit // Enable Javascript in web view let config = WKWebViewConfiguration() let prefs = WKPreferences() prefs.javaScriptEnabled = true config.preferences = prefs …

Lessons from writing Swift framework that works in Objective-C app

As mentioned in my previous post on Fix for Google Analytics pod not working in Swift framework a few months ago, I was helping to refactor a client’s outsourced mobile SDKs. Last month, one of their clients had issues using the iOS SDK in their Objective-C app. Turns out that the Swift framework, i.e. the …

Print properties of object in Swift

Reference: StackOverflow – Print Struct name in swift Here’s the code for printing the properties of an object func printProperties(_ object: Any) { var properties = [String: Any]() Mirror(reflecting: object).children.forEach { (child) in if let property = child.label { properties[property] = child.value } } print(object) print(type(of: object)) print(properties) } How the output would look like …

Swift func to show alert dialog in AppDelegate or ViewController

Was trying to show an alert dialog in a project’s AppDelegate.swift and ViewController.swift and decided to move it to a function in a separate utility class. Main issue was how to make it work as the class was a plain Swift class – self.present() could be used inside ViewController, self.window?.rootViewController?.present() could be used inside AppDelegate, …