Question

I have a json string like this:

String result={[{"id":"2","fullname":"Course 1"},{"id":"3","fullname":"Course 2"}]}

In java I wrote this code to decode that json string:

public class Courses {
public String id,name;  
}
Gson gs = new Gson();
Type listType = new TypeToken<List<Courses>>(){}.getType();
List<Courses> listCourses= gs.fromJson(result, listType);

But I always receive error:

06-09 04:21:11.614: E/AndroidRuntime(449): Caused by: java.lang.IllegalStateException: This is not a JSON Array.

What am I wrong?

Thanks 🙂

Answer 1

you json string Result is not valid.see here valid or not

and it should be

[
{
"id": "2",
"fullname": "Course 1"
},
{
"id": "3",
"fullname": "Course 2"
}
]

JSONArray jsonArray = new JSONArray(result);
for (int i = 0; i < jsonArray.length(); i++) {

   JSONObject objJson = jsonArray.getJSONObject(i);
   int id = objJson.getInt("id");
   String fullName = objJson.getString("fullname");

}