I have a mp3 url which works perfectly. It also plays the song automatically when opened in Chrome PC version. But when the same link is open in Webview android I need to provided gesture to play.(I have enabled Javascript)
This was done by the function of webview.
webview.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
webview.getSettings().setJavaScriptEnabled(true);
Done by try and error. :)