Flutter How to convert List into and from JSON - flutter

Question

There are two Functions that I use to convert two String variables into JSON and from JSON.
String toJson() {
Map<String,dynamic> map = {'name': name,'count':checkListCount,'description':description,};
return jsonEncode(map)
}
fromJson(String context){
Map<String,dynamic> map = jsonDecode(contents)
name = map['name'];
description = map['description'];
return '0';
}
How i can use this to functions to covert List?
There is my list
List<CheckListPoint> checkListPoints = [];
CheckListPoint{
bool correctly = false;
bool passed = false;
String requirement = '';
}
variables that I have in CheckListPoint will change by the user later in the app.

Answer 1

i am not exactly getting which key will give you the list of data from your question,
but suppose you have a response in with "data" key is giving you list of items,
then you can add from JSON with ->
data : List<User>.from(json["data"].map((x) => User.fromJson(x))),
and to convert it to JSON you need
"data": List<dynamic>.from(data.map((x) => x.toJson())),
i hope this is what you are asking for

Answer 2

I did a very similiar thing when fetching messages from firebase. It's the same as parsing from JSON since both values are dynamic.
Here I convert a DataSnapshot to a List
Future<List<Message>> getMessages(DataSnapshot snapshot) async {
List<Message> msgs = List.empty(growable: true);
if(snapshot.value != null) {
Map<dynamic, dynamic> messages = snapshot.value;
messages.forEach((key, value) {
msgs.add(Message.fromFirebase(value));
});
}
return msgs;
}
And here is the Message class:
class Message {
String message;
String senderId;
int time;
Message.fromFirebase(Map<dynamic, dynamic> json) :
message = json["message"],
senderId = json["senderId"],
time = json["time"];
}