How to execute JavaScript on Android?

Question

I have code which uses ScriptEngineManager, ScriptEngine class for executing JavaScript code using Java. But it works fine in Java SE, and doesn\'t work in Android - SDK sh

Answer 1

You can use Webview which inherits View class. Make an XML tag and use findViewById() function to use in the activity. But to use the JavaScript, you can make a HTML file containing the JavaScript code. The example blelow might help.

Webview browser=(Webview) findViewById(R.main.browser); //if you gave the id as browser
browser.getSettings().setJavaScriptEnabled(true); //Yes you have to do it
browser.loadUrl("file:///android_asset/JsPage.html"); //If you put the HTML file in asset folder of android

Remember that the JS will run on WebView, not in native environment, thus you might experience a lag or slow FPS in emulator. However when using on an actual phone, the code may run fast, depending on how fast is your phone.