How to parse JSON array with single element without any object in Retrofit?

Question

I am using Retrofit which uses GSON for parsing.The server will check the parameter i am sending and returns two responses Accordingly. If the parameter is valid i am getting the following response

[
  true
]

If it is not valid then i get response as,

   [
      "Sorry, <em class=\"placeholder\">names@gmail.inp</em> is not recognized as a user name or an e-mail address."
    ]

This is the call method i am using.

@Override

public void onResponse(Call<String> call, Response<String> response) {
mProgressBar.setVisibility(View.GONE);
    Log.d("Response ", ""+response);


}

here response.body giving me as null. But there is a response.which is viewable in OKHttp Log.

Make that parameter as `Object`. After parsing check if the parsed Object `instanceof` Boolean or String. — Akshay Bhat 'AB', Aug 29 '16 at 11:48

h_patel · Answer 1 · 2016-08-29T12:14:01.033

1

you can try this

 JSONArray jArray=new JSONArray(yourString);

 String str=jArray.getString(0);;
 if(str.equalsIgnoreCase("true")
 {
      //your code
 }else
 {
 }

edited Aug 29 '16 at 12:14

answered Aug 29 '16 at 11:55

h_patel

744
5
16

i am not getting as jsonob. – Noufal Aug 29 '16 at 12:10
i am not even getting as string – Noufal Aug 29 '16 at 12:16
the value i am getting response.body() is null in my activity.But there is a response which we can see inD/OkHttp: ["Sorry, gjgh@gmail.com is not recognized as a user name or an e-mail address."] – Noufal Aug 29 '16 at 12:19
1

first convert it into string than try it . – h_patel Aug 29 '16 at 12:22
Thats what i am trying !! Thats actually my question – Noufal Aug 29 '16 at 12:24
please first make your Question Clear. – h_patel Aug 29 '16 at 12:30

score 0 · Answer 2 · answered Aug 29 '16 at 11:51

0

JSONArray jarray = new JSONObject(jsonString);
for (int i = 0; i < jarray.length(); i++) {
      String string = jarray.getString(i);
      log.e("String",string);
}

that's working great. Please try this.

answered Aug 29 '16 at 11:51

Hardik Vaghasiya

298
1
3
11

I am not even getting JSONObject – Noufal Aug 29 '16 at 12:12
but you can get responce in onsuccess method of retrofit. In this on siccess method you can parsing directly. – Hardik Vaghasiya Aug 29 '16 at 12:15
i am getting null as response.body() – Noufal Aug 29 '16 at 12:45
first you check your url. if url is right check your retrofit code. – Hardik Vaghasiya Aug 29 '16 at 12:48
public void onResponse(Call call, Response response) { String sresponce = response.body(); } – Hardik Vaghasiya Aug 29 '16 at 12:52
and then parsing sresponce normally. – Hardik Vaghasiya Aug 29 '16 at 12:53

score 0 · Answer 3 · edited May 23 '17 at 12:25

You can use JsonParser provided by Gson. It will parse the json input to dynamic JsonElement.

Look at MByD example:

 public String parse(String jsonLine) {
    JsonElement jelement = new JsonParser().parse(jsonLine);
    JsonObject  jobject = jelement.getAsJsonObject();
    jobject = jobject.getAsJsonObject("data");
    JsonArray jarray = jobject.getAsJsonArray("translations");
    jobject = jarray.get(0).getAsJsonObject();
    String result = jobject.get("translatedText").toString();
    return result;
}

Hala.M · Answer 4 · 2016-08-30T10:14:38.030

0

since the server return diffrent codes

can you try

Call<Void>

and check the response code this might work for now until you know what is wrong void will not parse any thing so it shouldn't cause a crash

///////

did you try

Call<ArrayList<String>>

also are you sure the server returns 200 in both cases ?

edited Aug 30 '16 at 10:14

answered Aug 29 '16 at 16:55

Hala.M

766
6
15

I tried this one first.that time i got null pointer exception. the server returns 200 and 406 respectively different in two cases. – Noufal Aug 30 '16 at 09:52
try Call and tell me how did it go – Hala.M Aug 30 '16 at 10:15

How to parse JSON array with single element without any object in Retrofit?

4 Answers4