A basic app showing how to display events in the system's notification bar using the NotificationCompat API. NotificationCompat API is used for compatibility with older devices, running Android 1.6 (Donut) (API level 4) or newer.
The Notification API allows the app developers to display a message outside of your application's normal UI.
The class Notification was added in the Android 3.0 (API level 11), but this sample refers to the NotificationCompat class (part of the support library), which offers the same functionality for Android 1.6 (API level 4) or newer.
A Notificaiton can be created using Notification.Builder object. At bare minimum, a Builder object must include the following:
in the code snippet, it looks like following.
NotificationCompat.Builder builder = new NotificationCompat.Builder(this); builder.setSmallIcon(R.drawable.ic_stat_notification); builder.setContentTitle("BasicNotifications Sample"); builder.setContentText("Time to learn about notifications!");
To issue the notification, call notify() method in the NotificationManager. The code snippet will immediately display the notification icon in the notification bar.
NotificationManager notificationManager = (NotificationManager) getSystemService( NOTIFICATION_SERVICE); notificationManager.notify(NOTIFICATION_ID, builder.build());
This sample uses the Gradle build system. To build this project, use the “gradlew build” command or use “Import Project” in Android Studio.
If you've found an error in this sample, please file an issue: https://github.com/googlesamples/android-BasicNotifications
Patches are encouraged, and may be submitted by forking this project and submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.
Copyright 2019 The Android Open Source Project, Inc.
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