I have code like this:
setContentView(R.layout.webview);
webView = (WebView) findViewById(R.id.webView);
webView.getSettings().setJavaScriptEnabled(true)
Finally figured out how to play Youtube video on Glass!
Intent i = new Intent();
i.setAction("com.google.glass.action.VIDEOPLAYER");
i.putExtra("video_url", "https://m.youtube.com/watch?v=5bWSgFnoCOk");
startActivity(i);
Using WebView can't play the video, using VideoView can only play local MP4 or streaming MP4 (there's some way to hack the MP4 link for a Youtube video, but not reliable). Also, using VideoView can only pause/play the video, but not fast forward or backward. Using the com.google.glass.action.VIDEOPLAYER above solves all the problems WebView and VideoView have.