Flutter common operations json, Map, List mutual conversion

Convert between json, map and list in flutter

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json to List

String jsonStr = '[{"name":"budaye", "city":"北京"},{"name":"卜大爷", "city":"北京"}]';
List list = json.decode(jsonStr);

json to map

In the list in the above example, Map objects are stored:

    //接着上例：
    for(int i=0;i<list.length;i++){
      Map map = list[i];
    }

If the json object is not a json array:

String jsonStr = '{"name":"budaye", "city":"北京"}';
Map<String, dynamic> map = json.decode(jsonStr);

List to json

String jsonStr = json.encode(list);

Map to json

String jsonStr = json.encode(map);

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**PS: For more exciting content, please check --> "Flutter Development"
**PS: For more exciting content, please check --> "Flutter Development"