getCountriesByContinent method

Future<List<Country>> getCountriesByContinent(
  1. String continentName, {
  2. CountryFilter? filter,
})

Search by continent: Africa, Americas, Asia, Europe, Oceania.

Future<List<Country>> getcountryByRegionalBloc(){
 try{
   List<Country> result = await CountryProvider.getcountryByRegionalBloc("Asia");
   return result;
  } catch(error) {
   return null;
 }
}

Implementation

Future<List<Country>> getCountriesByContinent(String continentName, {CountryFilter? filter}) async {
  if (continentName.isNotEmpty) {
    final uri = "$baseUrl" + Constants.countriesByRegionalBLoc + continentName + filter.toFormattedUri;
    // print(uri);
    var response = await client.get(Uri.parse(uri));

    if (response.statusCode == 200) {
      var countries = List<Country>.from(jsonDecode(response.body).map((x) => x != null ? Country.fromJson(x) : null));
      return countries;
    }
    throw new Exception("No country found. Please check if https://restcountries.eu is avialable.");
  } else {
    throw Exception("Continent name can not be empty");
  }
}