Andorid notification - 1

 

	class MainActivity : AppCompatActivity() {
	private val channelID = "com.bokchi.myapplication.channel1"
	private var notificationManager : NotificationManager? = null
	override fun onCreate(savedInstanceState: Bundle?) {
	super.onCreate(savedInstanceState)
	setContentView(R.layout.activity_main)
	notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
	createNotificationChannel(channelID, "DemoChannel", "this is a demo")
	button.setOnClickListener {
	displayNotification()
	}
	}
	private fun displayNotification(){
	val notificationId = 45
	val notification = NotificationCompat.Builder(this@MainActivity, channelID)
	.setContentTitle("Demo TItle")
	.setContentText("This is a demo notifiation")
	.setSmallIcon(android.R.drawable.ic_dialog_info)
	.setAutoCancel(true)
	.setPriority(NotificationCompat.PRIORITY_HIGH)
	.build()
	notificationManager?.notify(notificationId, notification)
	}
	private fun createNotificationChannel(id : String, name:String, channelDescription:String){
	if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
	val importance = NotificationManager.IMPORTANCE_HIGH
	val channel = NotificationChannel(id,name,importance).apply {
	description = channelDescription
	}
	notificationManager?.createNotificationChannel(channel)
	}
	}
	}

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