android-clojurescript

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Project example with native android app running clojure script code.

Clojure code is assembled with Leiningen, check cljsrc/build.sh script. Generated web page is stored in android assets folder. Android gradle config launches cljsrc/build.sh if js folder doesn't exist in assets.

To launch it, you need Android Studio. Just run it as normal android-project.

Debug

You may run clojure part with any idea and any framework. One way is to launch it with figwheel.main in localhost and connect your android webview with

val url = if (BuildConfig.DEBUG) "http://10.0.2.2:9500/" else "file:///android_asset/js/page/index.html"
webview.loadUrl(url)

You will be able to use REPL with your browser and see your changes in both browser and android emulator.

Pass commands to android with @JavascriptInterface

Android part:

addJavascriptInterface(ExampleJSInterface(), "Android")

inner class ExampleJSInterface {
    @JavascriptInterface
    fun showToast(toast: String) = runOnUiThread {
        Toast.makeText(this@MainActivity, toast, Toast.LENGTH_LONG).show()
    }
}

Clojure part:

(js/Android.showToast "click")