Question 128817 in Android Studio Question posted in
The official documentation can be found here.

Android Studio – How can I get names from different JSON objects in a JSON Array for example

{
 item:[
     {
      item_id: 1
      add_on:[
             {
             name: Thin Crust
             },

             {
             name: Extra Cheese
             },
             
             {
             name: Extra Sauce
             }

     }]
}

I want to get these names and place them into one TextView

Tags:

2

Answers


  1. 0

    First of all include the JSON Library in your project.

    Then access your JSON Object like this:

    JSONObject jsonObject = new JSONObject(jsonString); // here is your JSON as String

// Get your Json Array of item

JSONArray itemArray = jsonObject.getJSONArray("item");

// Get your first Element from your array 

JSONObject firstItem = itemArray.getJSONObject(0);

// Then get your add_on array

JSONArray itemArray = firstItem.getJSONArray("add_on");

// After you get your array Get your second object which is { name: Extra Cheese}

JSONObject secondObject = itemArray.getJSONObject(1);

// Then you get your itemName this way:

String itemName = secondObject.getString("name");
    Login or Signup to reply.
  2. 0

    First of all you need to correct to JSON input. It’s not valid JSON. Correct JSON should be :

    {
    "item": [{
        "item_id": 1,
        "add_on": [{
                "name": "Thin Crust"
            },

            {
                "name": "Extra Cheese"
            },

            {
                "name": "Extra Sauce"
            }
        ]
    }]
}

    After that with Jackon library you can get the data from Json in POJO as below:

    POJO(s):

    class Items {

  @JsonProperty("item")
  public List<Item> item;
}

class Item {

  @JsonProperty("item_id")
  public int itemId;

  @JsonProperty("add_on")
  public List<Name> addOn;
}

class Name {

  @JsonProperty("name")
  public String name;
}

    Conversion with Jackson:

    public static void main(String[] args) throws JsonMappingException, JsonProcessingException {
    String json = "{rn" + 
        "  "item": [{rn" + 
        "    "item_id": 1,rn" + 
        "    "add_on": [{rn" + 
        "        "name": "Thin Crust"rn" + 
        "      },rn" + 
        "rn" + 
        "      {rn" + 
        "        "name": "Extra Cheese"rn" + 
        "      },rn" + 
        "rn" + 
        "      {rn" + 
        "        "name": "Extra Sauce"rn" + 
        "      }rn" + 
        "    ]rn" + 
        "  }]rn" + 
        "}";
    
    Items item = (new ObjectMapper()).readValue(json, Items.class);
    System.out.println(item);

  }

    Now from this object structure you can get names.

    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search