Question

After trying a lot sorry for asking such a trivial question.

Given below screenshot consist of a data that I have successfully received from the server.

I would like to know how to traverse through the data since whenever I try to cast it to something and try a foreach it gives an error.

The actual data sent from the server is a List() type.

I want to know how to cast it to same type and use it here.

I tried casting but it says unexpected token here.

Any help is appreciated.

Answer 1

JSON.parse return type depends on the String you try to parse. See the doc :

Parses json and build the corresponding parsed JSON value.

Parsed JSON values are of the types num, String, bool, Null, Lists of parsed JSON values or Maps from String to parsed JSON values.

From your screenshot, it seems that the return value is a List. You can do something like the following to use it (did you notice the typo in your commented code – .fore) :

final parsedList = JSON.parse(e.data)/*.fore*/;
parsedList.forEach((x){
  query('#idData').appendText(x[0]);
  query('#idData').appendText(x[1]);
  query('#idData').appendText(x[2]);
  query('#idData').appendText(x[3]);
});