{
    "name":"wang",
    "sex":"male",
    "age":21
    }

     String str1 = "{\n" +
                "\"name\":\"wang\",\n" +
                "\"sex\":\"male\",\n" +
                "\"age\":21\n" +
                "}";
     try {
            JSONObject jo=new JSONObject(str1);
            String name=jo.getString("name");
            String sex=jo.getString("sex");
            int age=jo.getInt("age");
            Toast.makeText(getApplicationContext(),name+" "+sex+" "+age,Toast.LENGTH_SHORT).show();

        } catch (JSONException e) {
            Toast.makeText(getApplicationContext(),e.getMessage(),Toast.LENGTH_SHORT).show();
        }