BridgeCommander

A wrapper library for iOS apps that provides easy to use functions for briding the communication between the native runtime and javascript runtime hosted in a WKWebView. The library wraps the functionality provided by WKUserContentController and embeds a javascript library that exposes promise style functions.

Usage

In Swift, create a BridgeCommander instance and start adding commands. Use send function to provide result back or error to pass back an error result.

    let commander = BridgeCommander(webView)
    commander.add("echo") { command in
        command.send(args: "You said: \(command.args)")
    }

In JavaScript, invoke this command as

    BridgeCommander.call("echo", "Hello!")
        .then(function(result) { console.log(result); })
        .catch(function(error) { console.log(error); });

That's it!

Installation

Plain old copy/paste

The simplest way would be to add BridgeCommander.swift and BridgeCommander.js to your xcode project. Make sure to update the javascript file reference inside the code if you rename the files or place them in separate folders. Do not reference the js file in your web app, it will be automatically available everywhere.

Using Carthage

This is a clean and fast way to use this as a library in your project. If you're unfamiliar with Carthage, read Ray's article on using it