Simple music service using native music player and play any kind of online stream url

StreamMusicPlayerService.kt

import android.app.Service
import android.content.Intent
import android.media.AudioManager
import android.media.MediaPlayer
import android.media.MediaPlayer.OnPreparedListener
import android.os.IBinder
import androidx.annotation.Nullable
import java.io.IOException

/**
 * Created by Zulqurnain on 7 Sept. 2021
 */
class StreamMusicPlayerService : Service(), OnPreparedListener {
    override fun onStartCommand(intent: Intent, flags: Int, startId: Int): Int {
        val urlAddress = intent.getStringExtra(URL_ADDRESS_EXTRA)
        if (urlAddress != null && urlAddress.isNotEmpty()) {
            URL_ADDRESS = urlAddress
        }
        if (intent.action.equals(ACTION_START, ignoreCase = true)) {
            mMediaPlayer = MediaPlayer()
            mMediaPlayer!!.setAudioStreamType(AudioManager.STREAM_MUSIC)
            try {
                mMediaPlayer!!.setDataSource(URL_ADDRESS)
                mMediaPlayer!!.prepare() // might take long! (for buffering, etc)
                IS_PLAYING = false
            } catch (e: IOException) {
                e.printStackTrace()
            }
        } else if (intent.action.equals(ACTION_START_PLAY, ignoreCase = true)) {
            mMediaPlayer = MediaPlayer()
            mMediaPlayer!!.setAudioStreamType(AudioManager.STREAM_MUSIC)
            try {
                mMediaPlayer!!.setDataSource(URL_ADDRESS)
                mMediaPlayer!!.prepare() // might take long! (for buffering, etc)
                mMediaPlayer!!.start()
                IS_PLAYING = true
            } catch (e: IOException) {
                e.printStackTrace()
            }
        }
        return START_NOT_STICKY
    }

    @Nullable
    override fun onBind(intent: Intent): IBinder? {
        return null
    }

    /**
     * Called when MediaPlayer is ready
     */
    override fun onPrepared(player: MediaPlayer) {
        player.start()
    }

    override fun onDestroy() {
        releasePlayer()
        super.onDestroy()
    }

    override fun onLowMemory() {
        releasePlayer()
        super.onLowMemory()
    }

    companion object {
        const val ACTION_START = "com.STREAM.PLAYER.START"
        const val ACTION_START_PLAY = "com.STREAM.PLAYER.START.PLAY"
        const val URL_ADDRESS_EXTRA = "com.STREAM.PLAYER.URL"
        private var URL_ADDRESS: String? = null
        var mMediaPlayer: MediaPlayer? = null
        private var IS_PLAYING = false
        fun stopMusic() {
            if (mMediaPlayer != null && mMediaPlayer!!.isPlaying) {
                mMediaPlayer!!.pause()
                IS_PLAYING = false
            }
        }

        fun startMusic() {
            if (mMediaPlayer != null && !mMediaPlayer!!.isPlaying) {
                mMediaPlayer!!.start()
                IS_PLAYING = true
            }
        }

        fun changeTrack(url: String?) {
            if (url != null && !url.isEmpty()) {
                URL_ADDRESS = url
            } else {
                return
            }
            try {
                mMediaPlayer!!.reset()
                mMediaPlayer!!.setDataSource(URL_ADDRESS)
                mMediaPlayer!!.prepare() // might take long! (for buffering, etc)
                IS_PLAYING = false
            } catch (e: IOException) {
                e.printStackTrace()
            }
        }

        private fun releasePlayer() {
            try {
                if (mMediaPlayer != null) {
                    mMediaPlayer!!.stop()
                    mMediaPlayer!!.release()
                }
                mMediaPlayer = null
            } catch (e: IllegalStateException) {
            }
        }
    }
}