Android Service Example

package com.androidchunk.androidserviceexample

import android.app.Service
import android.content.Intent
import android.media.MediaPlayer
import android.os.IBinder
import android.provider.Settings

class MyService : Service() {

    //object of media player
    private lateinit var player: MediaPlayer

    // Service is ready to start, if you call to startService()
    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {

        //this object will play the audio of default ringtone from the device
        player = MediaPlayer.create(this, Settings.System.DEFAULT_RINGTONE_URI)

        //loop audio
        player.isLooping = true

        //start player
        player.start()

        //status
        return START_STICKY
    }

    // when a client is bind to the service by calling bindService()
    // after onUnbind has already been called
    override fun onBind(intent: Intent): IBinder? {
        return null
    }

    // The service is no longer used and is being destroyed
    override fun onDestroy() {
        super.onDestroy()
        //stop the player
        player.stop()
    }
}

package com.androidchunk.androidserviceexample;

import android.app.Service;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.IBinder;
import android.provider.Settings;

import androidx.annotation.Nullable;

class MyService extends Service {

    //object of media player
    private MediaPlayer player;

    // Service is ready to start, if you call to startService()
    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        //this object will play the audio of default ringtone from the device
        player = MediaPlayer.create(this, Settings.System.DEFAULT_RINGTONE_URI);

        //loop audio
        player.setLooping(true);

        //start player
        player.start();

        //status
        return START_STICKY;
    }

    // when a client is bind to the service by calling bindService()
    // after onUnbind has already been called
    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    // The service is no longer used and is being destroyed
    @Override
    public void onDestroy() {
        super.onDestroy();
        //stop the player
        player.stop();
    }
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">
 
    <application>
         ...
         ...
 
        <service
            android:name=".MyService"
            android:enabled="true"
            android:exported="true" />
 
        <activity/>
         ...
         ...
    </application>
 
</manifest>

plugins {
    id 'com.android.application'
    id 'org.jetbrains.kotlin.android'
}

android {
    ...
    ...

    buildFeatures {
        viewBinding = true
    }
    ...
    ...
}

dependencies {
    ...
    ...
    ...
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:gravity="center"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/playButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Play Music" />
    <Button
        android:id="@+id/stopButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Stop Music" />

</LinearLayout>

package com.androidchunk.androidserviceexample

import android.content.Intent
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import com.androidchunk.androidserviceexample.databinding.ActivityMainBinding

class MainActivity : AppCompatActivity() {

    //view binding
    private lateinit var binding: ActivityMainBinding

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = ActivityMainBinding.inflate(layoutInflater)
        setContentView(binding.root)

        //create an instance of the intent class
        val intent = Intent(this, MyService::class.java)

        //handle play button click
        binding.playButton.setOnClickListener {
            //start service
            startService(intent)
        }

        //handle sto button click
        binding.stopButton.setOnClickListener {
            //stop service
            stopService(intent)
        }
    }
}

package com.androidchunk.androidserviceexample;

import android.content.Intent;
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
import com.androidchunk.androidserviceexample.databinding.ActivityMainBinding;

public class MainActivity extends AppCompatActivity {

    //view binding
    private ActivityMainBinding binding;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        binding = ActivityMainBinding.inflate(getLayoutInflater());
        setContentView(binding.getRoot());

        //create an instance of the intent class
        Intent intent = new Intent(this, MyService.class);

        //handle play button click
        binding.playButton.setOnClickListener(view -> {
            //start service
            startService(intent);
        });

        //handle sto button click
        binding.stopButton.setOnClickListener(view -> {
            //stop service
            stopService(intent);
        });
    }
}