<uses-permission android:name="android.permission.INTERNET"/>
 implementation 'com.android.support:recyclerview-v7:27.+'
    implementation 'com.github.bumptech.glide:glide:4.8.0'
    implementation 'com.squareup.okhttp3:okhttp:3.11.0'
    implementation 'com.google.code.gson:gson:2.2.4'

utils OKHttpUtils

public class OKHttpUtils {
    private static OkHttpClient client = null;

    public OKHttpUtils() {
    }

    private static OkHttpClient getInstance() {
        if (client == null) {
            synchronized (OKHttpUtils.class) {
                if (client == null)
                    client = new OkHttpClient();

            }

        }
        return client;

    }

    public static void dogetex(String url) {
        Request request = new Request.Builder().url(url).build();
        Call call = getInstance().newCall(request);
        try {
            call.execute();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

    public static void doget(String url, Callback callback) {
        Request request = new Request.Builder().url(url).build();
        Call call = getInstance().newCall(request);
        call.enqueue(callback);
    }

    public static void dopostjson(String url, String json, Callback callback) {
        RequestBody body = RequestBody.create(MediaType.parse("application/json;charset = utf-8"), json);
        Request request = new Request.Builder().url(url).post(body).build();
        Call call = getInstance().newCall(request);
        call.enqueue(callback);

    }

    class MyInteercrpter implements Interceptor {

        @Override
        public Response intercept(Chain chain) throws IOException {
            Request request = chain.request();
            String method = request.method();
            if (method.equals("GET")) {
                String url = request.url().toString();
                boolean contains = url.contains("?");
                if (contains) {
                    url = url + "&source = android";

                } else {
                    url = url + "?source = android";
                }
                Request request1 = request.newBuilder().url(url).build();

                Response response = chain.proceed(request1);

                return response;
            } else if (method.equals("POST")) {
                RequestBody body = request.body();
                if (body instanceof FormBody) {
                    FormBody.Builder newBuilder = new FormBody.Builder();
                    for (int i = 0; i < ((FormBody) body).size(); i++) {
                        String key = ((FormBody) body).name(i);
                        String value = ((FormBody) body).value(i);
                        newBuilder.add(key, value);
                    }
                    newBuilder.add("source", "android");
                    FormBody newBody = newBuilder.build();
                    Request request1 = request.newBuilder().post(newBody).build();
                    Response response = chain.proceed(request1);
                    return response;
                }

            }
            return null;
        }
    }
}

utils OKHttpUtils

View MainView

public interface MainView {
    void onSuccess(ShopBean shopBean);
    void onError(int code);
}

View MainView