Proxy+gradle+OkHttp config

build.gradle

    buildTypes {
        release {
            buildConfigField "boolean", "OMIT_HTTPS_SECURITY", "false"
            buildConfigField "String", "HTTP_PROXY_INET", "null"
            buildConfigField "int", "HTTP_PROXY_PORT", "0"
        }
        debug {
            buildConfigField "boolean", "OMIT_HTTPS_SECURITY", "true"
            Properties properties = new Properties()
            properties.load(project.rootProject.file('local.properties').newDataInputStream())
            buildConfigField "String", "HTTP_PROXY_INET", properties.getProperty('proxy.inet', 'null')
            buildConfigField "int", "HTTP_PROXY_PORT", properties.getProperty('proxy.port', '0')
        }
    }

local.properties

proxy.inet=192.168.10.134
proxy.port=8888

OkHttp provider

    @Provides
    @Singleton
    OkHttpClient okHttpClient() {
        OkHttpClient client = new OkHttpClient();
        if (BuildConfig.OMIT_HTTPS_SECURITY) {
            ignoreHttpsSecurity(client);
        }
        //noinspection ConstantConditions
        if (BuildConfig.HTTP_PROXY_INET != null) {
            client.setProxy(new Proxy(Proxy.Type.HTTP, InetSocketAddress.createUnresolved(BuildConfig.HTTP_PROXY_INET, BuildConfig.HTTP_PROXY_PORT)));
        }
        return client;
    }

    private void ignoreHttpsSecurity(OkHttpClient client) {
        TrustManager[] trustAllCerts = new TrustManager[]{
          new X509TrustManager() {
              public X509Certificate[] getAcceptedIssuers() {
                  return null;
              }

              public void checkServerTrusted(X509Certificate[] certs, String authType) throws CertificateException {
              }

              public void checkClientTrusted(X509Certificate[] certs, String authType) throws CertificateException {
              }
          }
        };
        try {
            SSLContext sc = SSLContext.getInstance("SSL");
            sc.init(null, trustAllCerts, new SecureRandom());
            client.setSslSocketFactory(sc.getSocketFactory());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }