Why can't I send an Http request?

Question

Computer networks

When I try to send a request to the server and get a response, I get the following error. I've been scratching my head for 2 days now. Please help me solve this sudoku. I highlighted in bold the line where I get the error.

E/AndroidRuntime: FATAL EXCEPTION: main
                  Process: com.example.pilig.sms3, PID: 9992
                  android.os.NetworkOnMainThreadException
                      at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1321)
                      at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:110)
                      at libcore.io.IoBridge.connectErrno(IoBridge.java:150)
                      at libcore.io.IoBridge.connect(IoBridge.java:133)
                      at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:188)
                      at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:457)
                      at java.net.Socket.connect(Socket.java:928)
                      at com.squareup.okhttp.internal.Platform$Android.connectSocket(Platform.java:220)
                      at com.squareup.okhttp.Connection.connect(Connection.java:148)
                      at com.squareup.okhttp.OkHttpClient$1.connect(OkHttpClient.java:84)
                      at com.squareup.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:321)
                      at com.squareup.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:241)
                      at com.squareup.okhttp.Call.getResponse(Call.java:198)
                      at com.squareup.okhttp.Call.execute(Call.java:80)
                      at com.example.pilig.sms3.Requester.request(Requester.java:61)
                      at com.example.pilig.sms3.Requester.getSMSToSend(Requester.java:80)
                      at com.example.pilig.sms3.End$2.handleMessage(End.java:60)
                      at android.os.Handler.dispatchMessage(Handler.java:111)
                      at android.os.Looper.loop(Looper.java:207)
                      at android.app.ActivityThread.main(ActivityThread.java:5955)
                      at java.lang.reflect.Method.invoke(Native Method)
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:940)
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:801)
I/Process: Sending signal. PID: 9992 SIG: 9
Application terminated.



package com.example.pilig.sms3;

import com.squareup.okhttp.Call;
import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.Response;

import java.io.BufferedReader;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.ProtocolException;

public class Requester {

    String path;
    String password;
    BufferedReader in;

    public Requester getThis(){
        return this;
    }
    private String request(String sql){
        final Response[] responce = new Response[1];
        try {
            OkHttpClient client = new OkHttpClient();
            Request request = new Request.Builder().url(sql).build();
            final Call call = client.newCall(request);

Response response = client.newCall(request).execute();

return response.body().string();
        } catch (MalformedURLException e) {
            return null;
        } catch (ProtocolException e) {
            return null;
        } catch (IOException ex) {
            return null;
        }
    }

    public void getConfiguration() throws IOException {
        path = in.readLine();
        password = in.readLine();
    }

    public void getSMSToSend()  {
        String sql = "http://80.252.241.43/telephony/android/get_sms.php?login=" + Account.login + "&password=" + Account.password;
        System.out.println(sql);
        String text = request(sql);
        String phone = text.substring(0, text.indexOf("|"));
        text = text.substring(text.indexOf("|")+1);
        String sms = text.substring(0, text.indexOf("|"));
        String id = text.substring(text.indexOf("|")+1);
        SMS message = new SMS(phone, sms, id, getThis());
        Account.list.add(message);
    }

    public  void setStatus(String status, String id) {
        String sql = "http://80.252.241.43/telephony/android/send_report.php?login=" +
                Account.login + "&password=" + Account.password + "&id=" + id + "&status=" + status;
        request(sql);

    }
}

Answer 1

What is there to decide for two days, they would search Google for "NetworkOnMainThreadException" and already write something, it remains only to understand. :)
Here I have written about employees, this is about inefficient people like you)))))
It is necessary in a separate thread - either Thread, or AsyncTask.