How do you use notifications in Android?

In Android, Notifications are an API used to display information on the device’s status bar. It can be used to send messages, reminders, notifications to users, as well as display relevant information about applications.

Here are some common uses of notifications in Android.

1. To create a Notification object: first, you need to use the NotificationCompat.Builder class to create a Notification object and set various properties such as title, text, icon, sound, etc.
2. Displaying Notification: Use the `notify()` method of the NotificationManager class to show a Notification object on the status bar. You can assign a unique ID to each Notification for future updating or deleting.
3. Handling Notification click events: You can set a click event for Notifications, so when the user clicks on a Notification, you can perform the desired action. This functionality can be achieved using PendingIntent.
4. Notification Update: To update the content of a notification, create a new Notification object and display it on the status bar using the notify() method of NotificationManager. Use the same ID to replace the old notification with the new one.
5. To remove a Notification, you can use the cancel() method of the NotificationManager to delete it from the status bar. Alternatively, you can use the cancelAll() method to remove all Notifications at once.

By employing the methods mentioned above, developers can efficiently utilize Notifications in Android applications to deliver various messages and notifications to users.