Nice primer:
You'll need some knowledge of Xcode, Objective-C, Cocoa and UIKit. My goal is for this guide to help bridge the gap between having no knowledge of iOS development and having enough to start tackling more interesting projects.
Design then Code
Using JavaScript code from native code without using a WebView (sic!) can be really useful to introduce dynamic functionality that was updatable without need of updating the app shorter iteration cycles share code between backend and native iOS and Android apps You can have business logic provided by a JavaScript that then controls the app that inject native functionality in the JavaScript context. You could even write an A/B testing framework based on this approach. iOS iOS offers the native JavaScriptCore: Evaluate JavaScript programs from within an app, and support JavaScript scripting of your app. So you can evaluate a script and read its return value natively: context.evaluateScript(myLib); let result = context.evaluateScript("myFunction();") let myFunction = context.objectForKeyedSubscription("myFunction"); let parametrizedResult = myFunction.invokeMethod(...) Or you can inject a native object into the JavaScript engine: @objc protoco...
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