Working with Background Services

class MyForegroundService : Service() {
    private val NOTIFICATION_ID = 1

    override fun onCreate() {
        super.onCreate()
        createNotificationChannel()
    }

    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
        val notification = createNotification()
        startForeground(NOTIFICATION_ID, notification)
        return START_STICKY
    }

    private fun createNotificationChannel() {
        val channel = NotificationChannel(
            "foreground_service_channel",
            "Foreground Service Channel",
            NotificationManager.IMPORTANCE_LOW
        )
        val manager = getSystemService(NotificationManager::class.java)
        manager.createNotificationChannel(channel)
    }

    private fun createNotification(): Notification {
        return NotificationCompat.Builder(this, "foreground_service_channel")
            .setContentTitle("Service Running")
            .setContentText("Foreground service is active")
            .setSmallIcon(R.drawable.ic_notification)
            .build()
    }

    override fun onBind(intent: Intent?): IBinder? = null
}

class MyService : Service() {
    override fun onCreate() {
        super.onCreate()
        // Initialize resources
    }

    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
        // Handle service start
        return START_STICKY
    }

    override fun onBind(intent: Intent?): IBinder? {
        return null // Not used for foreground services
    }

    override fun onDestroy() {
        super.onDestroy()
        // Clean up resources
    }
}

val intent = Intent(this, MyBackgroundService::class.java)
startService(intent)

val intent = Intent(this, MyBackgroundService::class.java)
stopService(intent)

import android.app.Service
import android.content.Intent
import android.os.Binder
import android.os.IBinder

class MyBoundService : Service() {
    private val binder = LocalBinder()

    inner class LocalBinder : Binder() {
        fun getService(): MyBoundService = this@MyBoundService
    }

    override fun onBind(intent: Intent): IBinder {
        return binder
    }
}

import android.content.ComponentName
import android.content.Context
import android.content.Intent
import android.content.ServiceConnection
import android.os.Bundle
import android.os.IBinder

class MainActivity : AppCompatActivity() {
    private var myService: MyBoundService? = null
    private var isBound = false

    private val serviceConnection = object : ServiceConnection {
        override fun onServiceConnected(name: ComponentName?, service: IBinder?) {
            val binder = service as MyBoundService.LocalBinder
            myService = binder.getService()
            isBound = true
        }

        override fun onServiceDisconnected(name: ComponentName?) {
            isBound = false
        }
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        val intent = Intent(this, MyBoundService::class.java)
        bindService(intent, serviceConnection, Context.BIND_AUTO_CREATE)
    }

    override fun onDestroy() {
        super.onDestroy()
        if (isBound) {
            unbindService(serviceConnection)
            isBound = false
        }
    }
}

import androidx.work.*

class BackgroundWorker(context: Context, params: WorkerParameters) : Worker(context, params) {
    override fun doWork(): Result {
        // Perform background task here
        return Result.success()
    }
}

// Schedule the worker
val workRequest = OneTimeWorkRequestBuilder<BackgroundWorker>().build()
WorkManager.getInstance(context).enqueue(workRequest)

val channel = NotificationChannel(
    "service_channel",
    "Background Service Channel",
    NotificationManager.IMPORTANCE_LOW
)

channel.description = "Used for background service notifications"
context.getSystemService(NotificationManager::class.java).createNotificationChannel(channel)

val notification = NotificationCompat.Builder(context, "service_channel")
    .setContentTitle("Background Service Running")
    .setContentText("Processing data in background")
    .setSmallIcon(R.drawable.ic_notification)
    .build()

startForeground(1001, notification)

class MyService : Service() {
    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
        // Handle service restart logic
        return START_STICKY
    }

    override fun onBind(intent: Intent?): IBinder? = null
}

class MyBackgroundService : Service() {
    private val scope = CoroutineScope(Dispatchers.Main)

    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
        scope.launch {
            // Simulate background work
            val result = withContext(Dispatchers.IO) {
                fetchDataFromNetwork()
            }
            // Handle result on main thread
            updateUI(result)
        }
        return START_STICKY
    }

    private suspend fun fetchDataFromNetwork(): String {
        delay(2000) // Simulate network delay
        return "Data fetched successfully"
    }

    private fun updateUI(data: String) {
        // Update UI or notify listeners
    }
}

class MusicService : MediaBrowserService() {
    private lateinit var mediaSession: MediaSessionCompat

    override fun onCreate() {
        super.onCreate()
        mediaSession = MediaSessionCompat(this, "MusicService")
        sessionToken = mediaSession.sessionToken
    }

    override fun onGetRoot(
        clientPackageName: String,
        clientUid: Int,
        rootHints: Bundle?
    ): BrowserRoot? {
        return BrowserRoot("root", null)
    }

    override fun onLoadChildren(
        parentId: String,
        result: Result<List<MediaBrowserCompat.MediaItem>>
    ) {
        // Load media items here
    }
}

class MusicService : MediaBrowserService() {
    private lateinit var mediaSession: MediaSessionCompat

    override fun onCreate() {
        super.onCreate()
        mediaSession = MediaSessionCompat(this, "MusicService")
        mediaSession.setCallback(MediaSessionCallback())
        sessionToken = mediaSession.sessionToken
    }

    private inner class MediaSessionCallback : MediaSessionCompat.Callback() {
        override fun onPlay() {
            // Start playing audio
        }

        override fun onPause() {
            // Pause playback
        }

        override fun onStop() {
            // Stop playback and release resources
        }
    }
}