encodeUrl function Null safety
Implementation
String encodeUrl(String url, Map<String, dynamic> map){
var _newMap = map.map((key, value) => MapEntry(key, Uri.encodeFull(value.toString())));
String _encodedData = '';
_newMap.forEach((key, value) {
if(_encodedData.isEmpty){
_encodedData+='$key=$value';
}else{
_encodedData+='&$key=$value';
}
});
return '$url?$_encodedData';
}