tree: f861f8dabe267e0b67d557b0fbeaf3d624bc8abf [path history] [tgz]
  1. Application/
  2. buildSrc/
  3. gradle/
  4. screenshots/
  5. build.gradle
  7. gradlew
  8. gradlew.bat
  10. packaging.yaml
  12. settings.gradle
  13. template-params.xml

Android LNotifications Sample Sample

This sample demonstrates new features for notifications introduced in Android L. These features include heads-up notifications, visibility, people, category and priority metadata.


Android 5.0 (Lollipop, API level 21) introduced additional features to the Notification API. Specifically, it allows developers to specify the priority and visibility level for notifications. This metadata allows the system to provide enhanced security for notifications while the lock screen is active, allows high-priority notifications to appear even when the notification bar is closed, and provides users to silence low-priority notifications when they're busy.

This metadata is provided via additional arguments to the Notification.Builder class.

Specifically, this sample demonstrates how to generate a heads-up notification (HeadsUpNotificationFragment), how to control visibility on the lock screen (VisibilityMetadataFragment), and how to set the category, priority, and associated contact for a notification (OtherMetadataFragment).


  • Android SDK 28
  • Android Build Tools v28.0.3
  • Android Support Repository


Getting Started

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: Sample

Patches are encouraged, and may be submitted by forking this project and submitting a pull request through GitHub. Please see for more details.


Copyright 2019 The Android Open Source Project, Inc.

Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.