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javaandroidjsonretrofit2

Retrofit 2 API Can I use local file path or json string instead of url?

Hello I am working on an Android App which uses retrofit API getting response from server. Retrofit Automatically parse the json response and creates objects of POJO class. I am storing that json into sqlite and if internet is not connected call the json from sqllite, facing difficulty have to parse json manually.

Is there any way I use retrofit library to parse json and make pojo from json string or file path?My code is here to fetch from url:

@FormUrlEncoded
@POST("getResponse")
Observable<UserResponse> getResponse(@Field("token") String token);

I want something like this if internet is not connected.

@FromStringEncoded
Observable<UserResponse> getResponseOffline(@Field("token") String token);

Thanks.

Solution

  • Simply use Google's GSON Library that allows you to convert json to POJO and vice versa. Fetch json from sqlite and parse it using gson.

    Gson gson=new Gson();
UserResponse userResponse= gson.fromJson(jsonInStringFromDb,UserResponse.class);

    You can also parse JSON from file using Gson.

    JSON to Java object, read it from a file.

    Gson gson = new Gson();
Staff staff = gson.fromJson(new FileReader("D:\\file.json"), Staff.class);