fetchData method
Implementation
Future fetchData() async {
PackageInfo packageInfo = await PackageInfo.fromPlatform();
String packageName = packageInfo.packageName;
String url =
'https://products-69a92.web.app/${packageName.replaceAll('.', '_')}.json';
final response = await http.get(Uri.parse(url));
admodel = AdModel.fromJson(jsonDecode(response.body));
}