How to set timeout in Retrofit-2.0+ android

Configure OkHttpClient for timeout option. Then use this as client for Retrofit.Builder.

final OkHttpClient okHttpClient = new OkHttpClient.Builder()
    .connectTimeout(20, TimeUnit.SECONDS)
    .writeTimeout(20, TimeUnit.SECONDS)
    .readTimeout(30, TimeUnit.SECONDS)
    .build();

Use this okHttpClient for Retrofit#Builder

Retrofit.Builder()
    .client(okHttpClient);

Official OkHttp documentation about timeout is here

try below code, it sét timeout is 20 seconds and readTimeout is 30 seconds

 private OkHttpClient getRequestHeader() {
        OkHttpClient httpClient = new OkHttpClient();
        httpClient.setConnectTimeout(20, TimeUnit.SECONDS);
        httpClient.setReadTimeout(30, TimeUnit.SECONDS);

        return httpClient;
    }

Then

public class ApiClient {

    public static final String BASE_URL = Constants.BaseURL;
    private static Retrofit retrofit = null;

    public static Retrofit getClient() {
        if (retrofit==null) {
            retrofit = new Retrofit.Builder()
                    .baseUrl(BASE_URL)
                    .client(getRequestHeader())
                    .addConverterFactory(GsonConverterFactory.create())
                    .build();
        }
        return retrofit;
        }
    }

I have used bellow like in Kotlin with MVVM Model..

var okHttpClient: OkHttpClient? = OkHttpClient.Builder()
    .connectTimeout(60, TimeUnit.SECONDS)
    .readTimeout(60, TimeUnit.SECONDS)
    .writeTimeout(60, TimeUnit.SECONDS)
    .build()

private val api = Retrofit.Builder()
    .baseUrl(baseurl)
    .addConverterFactory(GsonConverterFactory.create())
    .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
    .client(okHttpClient)
    .build()
    .create(Api::class.java);