如何在Retrofit-2.0+ android中设置超时

我提到这个链接 https://stackoverflow.com/a/29380845/1083093但我似乎无法实现我的

我在用

 compile 'com.squareup.retrofit2:retrofit:2.0.2'
 compile 'com.squareup.retrofit2:converter-gson:2.0.2'

我正在使用下面的代码，如何为此设置超时！

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)
                    .addConverterFactory(GsonConverterFactory.create())
                    .build();
        }
        return retrofit;
    }
}

配置OkHttpClient http://square.github.io/retrofit/2.x/retrofit/retrofit2/Retrofit.Builder.html#client-okhttp3.OkHttpClient-用于超时选项。然后使用它作为客户端Retrofit.Builder.

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

用这个okHttpClient用于改造#Builder http://square.github.io/retrofit/2.x/retrofit/retrofit2/Retrofit.Builder.html#client-okhttp3.OkHttpClient-

Retrofit.Builder()
    .client(okHttpClient);

关于超时的官方 OkHttp 文档在这里 https://github.com/square/okhttp/wiki/Recipes#timeouts