Agfdhyk

App crashes on this line if response won't come.

chain.proceed(requestBuilder.build())

Here is my class for RetrofitClient

class RetrofitClient {



    private val apiService: ApiServiceInterface



    init {

        val builder = Retrofit.Builder()

        builder.baseUrl(RequestParameters.BASE_URL)

        builder.addConverterFactory(GsonConverterFactory.create())

        builder.addCallAdapterFactory(RxJava2CallAdapterFactory.create())//added for adapter

        builder.client(getClient())

        val retrofit = builder.build()

        apiService = retrofit.create(ApiServiceInterface::class.java)

    }



    companion object {

        private var clientInstance: RetrofitClient? = null

        lateinit var context: Context



        fun getInstance(): RetrofitClient {

            if (clientInstance == null) {

                clientInstance = RetrofitClient()

            }

            return clientInstance as RetrofitClient

        }

    }



    fun getApiInterface(): ApiServiceInterface {

        return apiService

    }



    private fun getClient(): OkHttpClient {



        val httpClient = OkHttpClient.Builder()

        httpClient.readTimeout(25, TimeUnit.SECONDS)

        httpClient.connectTimeout(25, TimeUnit.SECONDS)



        httpClient.addInterceptor { chain ->

            val original = chain.request()



            val requestBuilder = original.newBuilder()

                    .header(RequestParameters.X_API, RequestParameters.H_XAPI_KEY)

                    .method(original.method(), original.body())



            chain.proceed(requestBuilder.build())

        }



        // set your desired log level

        val logging = HttpLoggingInterceptor()

        logging.level = HttpLoggingInterceptor.Level.HEADERS

        logging.level = HttpLoggingInterceptor.Level.BODY

        httpClient.addInterceptor(logging)



        return httpClient.build()

    }

}

Here is the error in log:

1542609097.397 26572-26572/com.app.mylife W/System.err: java.net.SocketTimeoutException: timeout

1542609097.397 26572-26572/com.app.mylife W/System.err:     at okio.Okio$4.newTimeoutException(Okio.java:230)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okio.AsyncTimeout.exit(AsyncTimeout.java:285)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okio.AsyncTimeout$2.read(AsyncTimeout.java:241)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okio.RealBufferedSource.indexOf(RealBufferedSource.java:345)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okio.RealBufferedSource.readUtf8LineStrict(RealBufferedSource.java:217)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http1.Http1Codec.readHeaderLine(Http1Codec.java:212)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http1.Http1Codec.readResponseHeaders(Http1Codec.java:189)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.java:88)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:45)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:125)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.logging.HttpLoggingInterceptor.intercept(HttpLoggingInterceptor.java:212)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)

1542609097.398 26572-26572/com.app.mylife W/System.err:     at com.app.mylife.retrofit.RetrofitClient$getClient$1.intercept(RetrofitClient.kt:64)

1542609097.399 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)

1542609097.399 26572-26572/com.app.mylife W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)

1542609097.399 26572-26572/com.app.mylife W/System.err:     at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:200)

1542609097.399 26572-26572/com.app.mylife W/System.err:     at okhttp3.RealCall.execute(RealCall.java:77)

1542609097.399 26572-26572/com.app.mylife W/System.err:     at retrofit2.OkHttpCall.execute(OkHttpCall.java:174)

1542609097.399 26572-26572/com.app.mylife W/System.err:     at retrofit2.adapter.rxjava2.CallExecuteObservable.subscribeActual(CallExecuteObservable.java:41)

1542609097.399 26572-26572/com.app.mylife W/System.err:     at io.reactivex.Observable.subscribe(Observable.java:10179)

1542609097.399 26572-26572/com.app.mylife W/System.err:     at retrofit2.adapter.rxjava2.BodyObservable.subscribeActual(BodyObservable.java:34)

1542609097.399 26572-26572/com.app.mylife W/System.err:     at io.reactivex.Observable.subscribe(Observable.java:10179)

1542609097.399 26572-26572/com.app.mylife W/System.err:     at io.reactivex.internal.operators.observable.ObservableSubscribeOn$1.run(ObservableSubscribeOn.java:39)

1542609097.399 26572-26572/com.app.mylife W/System.err:     at io.reactivex.Scheduler$1.run(Scheduler.java:134)

1542609097.399 26572-26572/com.app.mylife W/System.err:     at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:59)

1542609097.399 26572-26572/com.app.mylife W/System.err:     at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:51)

1542609097.399 26572-26572/com.app.mylife W/System.err:     at java.util.concurrent.FutureTask.run(FutureTask.java:266)

1542609097.399 26572-26572/com.app.mylife W/System.err:     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:301)

1542609097.399 26572-26572/com.app.mylife W/System.err:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)

1542609097.399 26572-26572/com.app.mylife W/System.err:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)

1542609097.399 26572-26572/com.app.mylife W/System.err:     at java.lang.Thread.run(Thread.java:764)

1542609097.399 26572-26572/com.app.mylife W/System.err: Caused by: java.net.SocketException: Socket closed

1542609097.399 26572-26572/com.app.mylife W/System.err:     at java.net.SocketInputStream.read(SocketInputStream.java:203)

1542609097.399 26572-26572/com.app.mylife W/System.err:     at java.net.SocketInputStream.read(SocketInputStream.java:139)

1542609097.399 26572-26572/com.app.mylife W/System.err:     at okio.Okio$2.read(Okio.java:139)

1542609097.399 26572-26572/com.app.mylife W/System.err:     at okio.AsyncTimeout$2.read(AsyncTimeout.java:237)

1542609097.400 26572-26572/com.app.mylife W/System.err:     ... 39 more

Try this code way..
make retrofit object creation part.

class ApiClient {



companion object {

    val BASE_URL = "https://simplifiedcoding.net/demos/"

    var retrofit: Retrofit? = null

    fun getClient(): Retrofit? {

        if (retrofit == null) {

            val interceptor = HttpLoggingInterceptor()

            interceptor.level = HttpLoggingInterceptor.Level.BODY

            val client = OkHttpClient.Builder().apply {

            readTimeout(20, TimeUnit.SECONDS)

            writeTimeout(20, TimeUnit.SECONDS)

            connectTimeout(20, TimeUnit.SECONDS)

            addInterceptor(interceptor)

            addInterceptor { chain ->

                var request = chain.request()

                request = request.newBuilder()

                        .build()

                val response = chain.proceed(request)

                response

            }

            }

            retrofit = Retrofit.Builder()

                    .baseUrl(BASE_URL)

                    .client(client.build())



                    .addConverterFactory(GsonConverterFactory.create())

                    .build()



        }



        return retrofit

    }

}

}

make interface for api calling..

interface ApiInterface {

@GET("marvel")

fun getData(): Call<List<Hero>>

}

In activity or fragment called api like this way i hope you create response pojo class

var apiInterface: ApiInterface = ApiClient.getClient()!!.create(ApiInterface::class.java)

    var hero: Call<List<Hero>>

    hero = apiInterface.getData()

    hero.enqueue(object : Callback<List<Hero>> {

        override fun onFailure(call: Call<List<Hero>>?, t: Throwable?) {

            closeDialog(dialog)

            Toast.makeText(mContext, t?.message, Toast.LENGTH_SHORT).show()

            Log.d("Error:::",t?.message)

        }



        override fun onResponse(call: Call<List<Hero>>?, response: Response<List<Hero>>?) {

           mHeroDataList.clear()

            if (response != null && response.isSuccessful && response.body() != null) {

                closeDialog(dialog)

                mHeroDataList .addAll(response.body()!!)

                setAdapter(mHeroDataList)

            }

        }



    })

To fix this issue you need to be sure to check network connectivity on the device and be sure you have an active internet connection before making the network call.
methods to check internet connectivity before making network requests
You can use connectivity manager as such

fun isOnline(): Boolean {

    val cm =

        getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager

    val netInfo = cm.getActiveNetworkInfo()

    return netInfo != null && netInfo.isConnectedOrConnecting()

}

this was culled from this answer which allows you check network availability.
If you want to monitor more accurately whether your network is active or not you can try pinging Google DNS servers with the answer here Checking network on Android.