android - Adding JavaScript Interface to a Browser

Question

Is it possible to add a JavaScript interface to the Android Browser the same way one can be added to the WebView Component as illustrated in this demo. My particular use case only needs JavaScript -> android so that I can send it back to the previous activity.

Answer 1

You can invoke methods and functions in your webview by using javascript url's, e.g.

webview.loadUrl("javascript:somemethod()");

You will, of course, need to enable javascript on your webview:

webview.getSettings().setJavaScriptEnabled(true);

This is from java to javascript. If you want to invoke java code / android API's from javascript, use addJavascriptInterface()

webview.addJavascriptInterface(new MyJSJavaBridge(), "api");

All of this is shown in the example url you posted as well.