您可以使用web视图继承View类。做一个XML标记，并使用 findViewById（）功能在活动中使用。但是，使用JavaScript，你可以创建包含JavaScript的code一个HTML文件。这个例子blelow可能的帮助。

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

记住，JS将运行在web视图，而不是在本地环境中，因此，你可能会遇到在模拟器上滞后或缓慢的FPS。但是用在实际的手机的时候，在code可以跑得快，这取决于有多快你的电话。

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.