Intent for playing a playlist in the youtube app

GetYoutubePlayPlaylistIntent.java

    public static Intent getYoutubePlayPlaylistIntent(Context context, String googleId) {
        String url = String.valueOf("https://www.youtube.com/playlist?list=");
        String mGoogleId = String.valueOf(googleId);
        if (mGoogleId.length() != 0) {
            url = url.concat(mGoogleId);
        }
        Uri uri = Uri.parse(url).buildUpon().appendQueryParameter("playnext", "1").build();

        Intent intent = new Intent("android.intent.action.VIEW", uri).setPackage("com.google.android.youtube");
        PackageManager packageManager = context.getPackageManager();
        if (intent.resolveActivity(packageManager) != null) {
            String clientLibraryVersion = (new StringBuilder(+35)).append(1).append(".2.2").toString();
            String appVersion = getAppVersion(context);

            intent.putExtra("app_package", context.getPackageName())
                    .putExtra("app_version", appVersion)
                    .putExtra("client_library_version", clientLibraryVersion);
            return intent;
        } else
            return new Intent(Intent.ACTION_VIEW, uri);
    }

    private static String getAppVersion(Context context) {
        try {
            return context.getPackageManager().getPackageInfo(context.getPackageName(), 0).versionName;
        } catch (PackageManager.NameNotFoundException var1) {
            throw new IllegalStateException("Cannot retrieve calling Context's PackageInfo", var1);
        }
    }