showRateUsDialog method
Implementation
Future<void> showRateUsDialog({String fallbackUrl = ''}) async {
final InAppReview inAppReview = InAppReview.instance;
if (await inAppReview.isAvailable()) {
await inAppReview.requestReview();
} else if (fallbackUrl.isNotEmpty) {
// In-app review unavailable (development build, quota exhausted, etc.)
// Open the store listing directly so the user can still leave a review.
await launchUrl(Uri.parse(fallbackUrl), mode: LaunchMode.externalApplication);
}
}