Getting simple JSON object response using Retrofit library

Question

I have a web query with JSON response as:

{ "status":true, "result": { "id":"1", "name":"ABC 1", "email":"[email protected]", "password":"123456", "status":false, "created":"0000-00-00 00:00:00" }, "message":"Login successfully" }

I am using the following code for:

@GET("/stockers/login") public void login( @Query("email") String email, @Query("password") String password, Callback<JSONObject> callback);

In Debugger the query made by the Retrofit library is correct, however I get an empty JSON in response.

ApiManager.getInstance().mUrlManager.login( email.getText().toString().trim(), password.getText().toString().trim(), new Callback<JSONObject>() { @Override public void success(JSONObject jsonObj, Response response) { mDialog.dismiss();

Leopold Joy · Accepted Answer · 2018-01-03 10:23:35Z

24

Simply use JsonElement insted of JSONobject. Like:

@GET("/stockers/login") Call<JsonElement> getLogin( @Query("email") String email, @Query("password") String password );

edited Jan 3, 2018 at 10:23

Leopold Joy

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answered Jan 3, 2018 at 9:43

Shubham Vala

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Comments

Community · Accepted Answer · 2017-05-23 12:25:02Z

Instead of Callback with JSONObject class, you could use the Retrofit basic callback which use the Response class and then, once you get the response, you had to create the JSONObject from it.

See this: https://stackoverflow.com/a/30870326/2037304

Otherwise you can create your own model class to handle the response.

First the Result class:

public class Result { public int id; public String name; public String email; public String password; public boolean status; public Date created; }

And then your response class to use with Retrofit

public class MyResponse { public boolean status; public Result result; public String message; }

Now you can call:

 @GET("/stockers/login") public void login( @Query("email") String email, @Query("password") String password, Callback<MyResponse> callback);

Stephan · Accepted Answer · 2018-05-05 21:02:36Z

The answers seam kinda old and for Retrofit 1, if you are using Retrofit 2 and don't want to use a converter you have to use ResponseBody.

@GET("/stockers/login") public void login( @Query("email") String email, @Query("password") String password, Callback<ResponseBody> callback);

And then in your callback in the onResponse method call string on the body and create a JSONObject from it.

if(response.isSuccessful()) JSONObject json = new JSONObject(response.body().string());

oziem · Accepted Answer · 2016-04-25 08:45:42Z

You can create custom factory like belowe or copy it from here : https://github.com/marcinOz/Retrofit2JSONConverterFactory

public class JSONConverterFactory extends Converter.Factory { public static JSONConverterFactory create() { return new JSONConverterFactory(); } private JSONConverterFactory() { } @Override public Converter<?, RequestBody> requestBodyConverter(Type type, Annotation[] parameterAnnotations, Annotation[] methodAnnotations, Retrofit retrofit) { if (type == JSONObject.class || type == JSONArray.class) { return JSONRequestBodyConverter.INSTANCE; } return null; } @Override public Converter<ResponseBody, ?> responseBodyConverter(Type type, Annotation[] annotations, Retrofit retrofit) { if (type == JSONObject.class) { return JSONResponseBodyConverters.JSONObjectResponseBodyConverter.INSTANCE; } if (type == JSONArray.class) { return JSONResponseBodyConverters.JSONArrayResponseBodyConverter.INSTANCE; } return null; } }

public class JSONRequestBodyConverter<T> implements Converter<T, RequestBody> { static final JSONRequestBodyConverter<Object> INSTANCE = new JSONRequestBodyConverter<>(); private static final MediaType MEDIA_TYPE = MediaType.parse("text/plain; charset=UTF-8"); private JSONRequestBodyConverter() { } @Override public RequestBody convert(T value) throws IOException { return RequestBody.create(MEDIA_TYPE, String.valueOf(value)); } }

public class JSONResponseBodyConverters { private JSONResponseBodyConverters() {} static final class JSONObjectResponseBodyConverter implements Converter<ResponseBody, JSONObject> { static final JSONObjectResponseBodyConverter INSTANCE = new JSONObjectResponseBodyConverter(); @Override public JSONObject convert(ResponseBody value) throws IOException { try { return new JSONObject(value.string()); } catch (JSONException e) { e.printStackTrace(); } return null; } } static final class JSONArrayResponseBodyConverter implements Converter<ResponseBody, JSONArray> { static final JSONArrayResponseBodyConverter INSTANCE = new JSONArrayResponseBodyConverter(); @Override public JSONArray convert(ResponseBody value) throws IOException { try { return new JSONArray(value.string()); } catch (JSONException e) { e.printStackTrace(); } return null; } } }

Whoever downvoted this answer, you're supposed to leave a comment explaining why. I think this is a perfectly fine answer. +1.

Fouad Wahabi · Accepted Answer · 2015-06-29 09:43:02Z

try this instead :

@GET("/stockers/login") public void login( @Query("email") String email, @Query("password") String password, Callback<Response> callback); // set the callback generic parameter to Response ApiManager.getInstance().mUrlManager.login( email.getText().toString().trim(), password.getText().toString().trim(), new Callback<Response>() { @Override public void success(Response response, Response response1) { String json = response.getBody(); try { JSONObject jsonObj = new JSONObject(json); } catch(JSONException e) { } alog.dismiss();

amirreza arampour · Accepted Answer · 2023-03-06 10:34:48Z

After lots of searching i found this solution

Use JsonObject from gson library instead of JSONObject

Check this Check here

Bitcoin Cash - ADA enthusiast · Accepted Answer · 2019-12-06 01:48:09Z

1

Just define the type of the object you want to get as a String as com.google.gson.JsonObject instead of String and call .toString() on that object to get the JSON string itself.

answered Dec 6, 2019 at 1:48

Bitcoin Cash - ADA enthusiast

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1 Comment

Sarith Nob Over a year ago

This answer help me in another purpose, but seems not really 100% resolve to the question.

narancs · Accepted Answer · 2015-06-29 10:14:28Z

I`m using this site to create my classes (POJO) from JSON.

http://www.jsonschema2pojo.org/ just be sure to set to JSON insted of JSON Schema and check GSON, because retrofit is using GSON as well for parsing.

your retrofit code looks fine.

Sahil Patel · Accepted Answer · 2017-10-26 15:24:21Z

Use JacksonConverterFactory instead of GsonConverterFactory while setting up Retrofit. Now you can directly work with JsonObject responses.

compile 'com.squareup.retrofit2:converter-jackson:2.1.0'

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