Retrieve data from complex JSON in Android Studio

Mobile Couchbase Lite
1

-Hi, i am new to Couchbase and trying to retrieve certain portions of my JSON data which have been stored successfully into my document but to no avail. i always get a null value.

-I retrieve the properties for project_id, project_name and forms using
the document.getProperty("") method;

-But I always get “null” when i try to retrieve any other data (eg. form_name, variables) using
the document.getProperty("") method. Please help ASAP :slight_smile:

This is my JSON data being stored after being converted into hashmap using_**HashMap<String,Object> properties = new Gson().fromJson(jsonString, new TypeToken<HashMap<String, Object>>(){}.getType()).**

 {
      "project_id": "PROJ10001",
      "project_name":"Sample Project",
      "forms": [
      {
        "form_name": "main",
        "form_id": "FORM001",
        "variables": [

        {
          "id":"VAR0001",
          "variable_name": "firstname",
          "variable_label": "First Name",
          "input_type": "text",
          "hidden_text": "",
          "required": "1",
          "options": {},
          "default_value": "n/a",
          "max_length": 50,
          "min_length": 2,
          "pre_condition": "",
          "post_condition": "",
          "order_in_form": "1"
        },
        {
          "id":"VAR0002",
          "variable_name": "age",
          "variable_label": "What is your current age",
          "input_type": "number",
          "hidden_text": "",
          "required": "1",
          "options": {},
          "default_value": "0",
          "max_length": 3,
          "min_length": 2,
          "pre_condition": "",
          "post_condition": "",
          "order_in_form": "2"
        },
        { 
          "id":"VAR0003",
          "variable_name": "gender",
          "variable_label": "Gender",
          "input_type": "options",
          "hidden_text": "",
          "required": "1",
          "options": {
            "type":"list", 
            "multi":"0",
            "items":[
              {"label":"Male","value":"m", "skip":""},
              {"label":"Female","value":"f", "skip":""}
            ]
          },
          "default_value": "0",
          "max_length": 3,
          "min_length": 2,
          "pre_condition": "",
          "post_condition": "",
          "order_in_form": "3"
         }]
      },


      
      {
        "form_name": "male_form",
        "form_id": "FORM002",
        "variables": 
        [
          {
            "id":"VAR0004",
            "variable_name": "beard",
            "variable_label": "How many shirts do you have?",
            "input_type": "number",
            "hidden_text": "",
            "required": "1",
            "options": {},
            "default_value": "n/a",
            "max_length": 3,
            "min_length": 2,
            "pre_condition": "",
            "post_condition": "",
            "order_in_form": "1"
          }
      ]
    }
  ]  
}