69.5 Creating a Notification Channel

Before an app can send a notification, it must first create a notification channel. A notification channel consists of an ID that uniquely identifies the channel within the app, a channel name and a channel description (only the latter two of which will be seen by the user). Channels are created by configuring a NotificationChannel instance and then passing that object through to the createNotificationChannel() method of the NotificationManager class. For this example, the app will contain a single notification channel named “NotifyDemo News”. Edit the MainActivity.kt file and implement code to create the channel when the app starts:

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import android.app.NotificationChannel

import android.app.NotificationManager

import android.content.Context

import android.graphics.Color

 

class MainActivity : AppCompatActivity() {

 

    private var notificationManager: NotificationManager...