public class MainActivity extends Activity {
    private WebView webview;

    @SuppressLint("SetJavaScriptEnabled")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);


        webview = new WebView(this);
        setContentView(webview);

        final WebSettings settings = webview.getSettings();
        settings.setJavaScriptEnabled(true);
        settings.setJavaScriptCanOpenWindowsAutomatically(true);
        settings.setPluginState(WebSettings.PluginState.ON);

        webview.setWebViewClient(new WebViewClient() {
            // autoplay when finished loading via javascript injection
            public void onPageFinished(WebView view, String url) { webview.loadUrl("javascript:(function() { document.getElementsByTagName('video')[0].play(); })()"); }
        });
        webview.setWebChromeClient(new WebChromeClient());

        webview.loadUrl("https://youtu.be/VaC6vq47Hok");
    }

    @Override
    protected void onPause() {
        webview.loadUrl("javascript:(function() { document.getElementsByTagName('video')[0].play(); })()");
        super.onPause();

    }

  /*  @Override
    protected void onResume() {
        webview.onResume();
        super.onResume();
    }*/

    @Override
    protected void onResume() {
        webview.loadUrl("javascript:(function() { document.getElementsByTagName('video')[0].play(); })()");
        super.onResume();
    }

}