How to send data to an already running Service?

Question

Android

How to send data to an already running service?
activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical">

    <Button
        android:id="@+id/btnStart"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="onClickStart"
        android:text="@string/start">
    </Button>

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/editText1"
        android:text="3" />

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/editText2" />
</LinearLayout>

MainActivity.java

package com.example.my.myapplication;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;

import android.view.View;
import android.widget.EditText;


public class MainActivity extends Activity {

    public final static String BROADCAST_ACTION = "com.example.my.myapplication";

    BroadcastReceiver br;
    EditText EditText1;
    EditText EditText2;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        EditText1 = (EditText) findViewById(R.id.editText1);
        EditText2 = (EditText) findViewById(R.id.editText2);

        // создаем BroadcastReceiver
        br = new BroadcastReceiver() {
            // действия при получении сообщений
            public void onReceive(Context context, Intent intent) {
                int result = intent.getIntExtra("result", 0);
                String re = Integer.toString(result);
                EditText2.setText(re);
            }
        };
        // создаем фильтр для BroadcastReceiver
        IntentFilter intFilt = new IntentFilter(BROADCAST_ACTION);
        // регистрируем (включаем) BroadcastReceiver
        registerReceiver(br, intFilt);


        Intent intent;

        // Создаем Intent для вызова сервиса,
        // кладем туда параметр времени и код задачи
        int s = Integer.parseInt(EditText1.getText().toString());
        intent = new Intent(this, MyService.class).putExtra("time", s);
        intent.putExtra("time", s);
        // стартуем сервис
        startService(intent);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        // дерегистрируем (выключаем) BroadcastReceiver
        unregisterReceiver(br);
    }

    public void onClickStart(View v) {
        Intent intent;
        int s = Integer.parseInt(EditText1.getText().toString());
        intent = new Intent(this, MyService.class).putExtra("time", s);
        intent.putExtra("time", s);
    }

}

MyService.java

package com.example.my.myapplication;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;

public class MyService extends Service {

    ExecutorService es;

    public void onCreate() {
        super.onCreate();
        es = Executors.newFixedThreadPool(1);
    }

    public void onDestroy() {
        super.onDestroy();
    }

    public int onStartCommand(Intent intent, int flags, int startId) {

        int time = intent.getIntExtra("time", 1);
        MyRun mr = new MyRun(startId, time);
        es.execute(mr);

        return super.onStartCommand(intent, flags, startId);
    }

    public IBinder onBind(Intent arg0) {
        return null;
    }

    class MyRun implements Runnable {

        int time;
        int startId;

        public MyRun(int startId, int time) {
            this.time = time;
            this.startId = startId;
        }

        public void run() {
            Intent intent = new Intent(MainActivity.BROADCAST_ACTION);
            while (true) {
                try {
                    // начинаем выполнение задачи
                    TimeUnit.SECONDS.sleep(time);
                    // сообщаем об окончании задачи
                    intent.putExtra("result", time * 100);
                    sendBroadcast(intent);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
           // stop();
        }

        void stop() {
            stopSelfResult(startId);
        }
    }
}

What I want from the application: at startup, the service starts, a number is sent to it, it multiplies this number by 100 and sends the result to the activity in the second text field (and continues to work further). Next, I want to send a new number to the service without stopping its work, I enter a new number in the first test field, and when I click on the button, I need to send this number to the service, and it must also multiply it by 100 and send it back to the activity in the first text field . I can not figure out how to transfer data to an already running service. Tell.

Answer 1

The documentation in Russian says
"Multiple service start requests result in multiple corresponding calls to the service's onStartCommand() method."