rate us button android code

try {
    startActivity(new Intent(Intent.ACTION_VIEW,
            Uri.parse("market://details?id=com.google.android.googlequicksearchbox")));
}catch (ActivityNotFoundException e)
{
    startActivity(new Intent(Intent.ACTION_VIEW,
            Uri.parse("https://play.google.com/store/apps/details?id=com.google.android.googlequicksearchbox")));
}