on-create-open-youtube-url

...
@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


        if( getIntent() != null
            && getIntent().getStringExtra("URL") != null ){

            String urlVideo = getIntent().getStringExtra("URL");
            String videoId = urlVideo.split("v=")[0];

            Intent appIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("vnd.youtube:" + videoId));
            Intent webIntent = new Intent(Intent.ACTION_VIEW, Uri.parse( urlVideo ));

            try {
                startActivity(appIntent);
            }
            catch (ActivityNotFoundException ex) {
                startActivity(webIntent);
            }
            finish();
        }
    }
...