How to convert map to string?

Question

my obj is:

Map myJSON = {
  "name": {"first":"foo","last":"bar"}, 
  "age":31, "city":"New York"
}; 

I want to replace it with the new output Ex:

String myJSON = '{"name":{"first":"foo","last":"bar"}, "age":31, "city":"New York"}';

Answer 1

使用convert类

import 'dart:convert';

将字符串转换为映射

json.decode(stringData);

将地图转换为字符串

json.encode(mapData);

Answer 2

  String jsonString = jsonEncode(myJSON);
  print(jsonString);