CODEWITHSUNDEEP
javajsonandroid-volley
jcmag
jcmag

Reputation: 247

Convert Java object to JsonObject

I retrieve an Inventory object by making an HTTP GET using Volley:

JsonObjectRequest req = new JsonObjectRequest(Request.Method.GET,
        Constants.API_URL + "inventory/lastInventoryWithLines/" + MyContext.User.getSiteId().toString(), null,
        new Response.Listener<JSONObject>() {
            @Override
            public void onResponse(JSONObject response) {
                try {
                    Gson gson = new Gson();
                    inventory[0] = gson.fromJson(response.toString(), Inventory.class);
                    ...
                } catch (Exception e) {
                    Log.e("InventoryActivity", e.getMessage());
                }
                finally {
                    showProgress(false);
                }
            }
        }, new Response.ErrorListener() {
               @Override
               public void onErrorResponse(VolleyError error) {
                   ...
               }
           }
);
queue.add(req);

The important line is: 

gson.fromJson(response.toString(), Inventory.class);

I've decorated my Inventory class with @SerializedName:

public class Inventory {
    @SerializedName("InventoryId")
    private UUID InventoryId;

    @SerializedName("Title")
    private String Title;
    ...
}

so this deserialization is easy.

Now, I want to update this Inventory object, and send it back to the server. Volley needs a JSONObject. So my question is: how could I convert my Inventory object to a JSONObject?

Upvotes: 1

Views: 7910

Answers (1)

smac89
smac89

Reputation: 43206

In short, you have to do:

JsonObject jsonObject = gson.toJsonTree(myUpdatedInventory, Inventory.class).getAsJsonObject();

I didn't notice you weren't solely using google gson, so here is the updated answer, taken from another similar question:

new JSONObject(new Gson().toJson(inventory[0], Inventory.class));

Upvotes: 2

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