Common UTILS

BaseHolder.kt

abstract class BaseHolder(override val containerView: View) : RecyclerView.ViewHolder(containerView),
    LayoutContainer {
    abstract fun reload(source: Any)
}

Gradle Imports.java

implementation 'com.github.bumptech.glide:glide:4.9.0'
kapt 'com.github.bumptech.glide:compiler:4.9.0'

implementation "android.arch.lifecycle:extensions:1.1.1"
implementation "android.arch.lifecycle:viewmodel:1.1.1"

implementation 'com.squareup.retrofit2:retrofit:2.6.1'
implementation 'com.squareup.retrofit2:converter-gson:2.6.1'
implementation 'com.jakewharton.retrofit:retrofit2-kotlin-coroutines-adapter:0.9.2'

implementation "androidx.navigation:navigation-fragment-ktx:2.1.0"
implementation "androidx.navigation:navigation-ui-ktx:2.1.0"

implementation 'com.squareup.okhttp3:logging-interceptor:3.12.1'

React-Native run android

export ANDROID_HOME=$HOME/Library/Android/sdk
export PATH=$PATH:$ANDROID_HOME/emulator
export PATH=$PATH:$ANDROID_HOME/tools
export PATH=$PATH:$ANDROID_HOME/tools/bin
export PATH=$PATH:$ANDROID_HOME/platform-tools
source $HOME/.bash_profile
react-native run-android

RetrofitHelper.kt

/**
 *
 * Created by bedoy on 2019-09-09.
 */
object RetrofitHelper {
    private val retrofit by lazy {
        build()
    }
  
    private val client by lazy {
        val logging = HttpLoggingInterceptor()
        logging.level = HttpLoggingInterceptor.Level.BODY
        
        OkHttpClient.Builder().addInterceptor { chain ->
            val original = chain.request()

            val request = original.newBuilder()
                .header("key", "value")
                //headers
                .method(original.method(), original.body())
                .build()

            chain.proceed(request)
        }.addInterceptor(
            logging
        ).build()
    }

    private fun build() : Retrofit {
        return Retrofit.Builder()
            .baseUrl("API_URL")
            .addConverterFactory(GsonConverterFactory.create())
            .addCallAdapterFactory(CoroutineCallAdapterFactory())
            .build()
    }

    fun <S> createService(serviceClass: Class<S>): S {
        return retrofit.create(serviceClass)
    }

}