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README.md

      1 Android NotificationChannels Sample (Kotlin)
      2 ===================================
      3 
      4 Demonstration of using channels to categorize notifications by topic. This feature was
      5             added in Android O, and allows users to have fine-grained control over their
      6             notification preferences.
      7 
      8 Introduction
      9 ------------
     10 
     11 Android O introduces notification channels to provide a unified system to help users
     12 manage notifications. When you target Android O, you must implement one or more
     13 notification channels to display notifications to your users.
     14 
     15 You can create a notification channel for each distinct type of notification you need
     16 to send. You can also create notification channels to reflect choices made by users of
     17 your app. For example, you might setup separate notification channels for each
     18 conversation group created by a user in a messaging app.
     19 
     20 To create a channel, call `[NotificationManager.createNotificationChannels()][1]`. You
     21 can then use `[Notification.Builder.setChannel()][2]` to assign your notification to that
     22 channel.
     23 
     24 Users can now manage most of the settings associated with notifications using a
     25 consistent system UI. All notifications posted to a notification channel behave the
     26 same. To access the settings screen, use the `ACTION_CHANNEL_NOTIFICATION_SETTINGS`
     27 intent:
     28 
     29 ```
     30 Intent intent = new Intent(Settings.ACTION_CHANNEL_NOTIFICATION_SETTINGS);
     31 intent.putExtra(Settings.EXTRA_CHANNEL_ID, mChannel.getId());
     32 intent.putExtra(Settings.EXTRA_APP_PACKAGE, getPackageName());
     33 startActivity(intent);
     34 ```
     35 
     36 
     37 [1]: https://developer.android.com/reference/android/app/NotificationManager.html#createNotificationChannels(java.util.List<android.app.NotificationChannel>)
     38 [2]: https://android-dot-devsite.googleplex.com/reference/android/app/Notification.Builder.html#setChannel(java.lang.String)
     39 
     40 Pre-requisites
     41 --------------
     42 
     43 - Android SDK Preview O
     44 - Android Build Tools v25.0.3
     45 - Android Support Repository
     46 
     47 Screenshots
     48 -------------
     49 
     50 <img src="screenshots/1-main.png" height="400" alt="Screenshot"/> 
     51 
     52 Getting Started
     53 ---------------
     54 
     55 This sample uses the Gradle build system. To build this project, use the
     56 "gradlew build" command or use "Import Project" in Android Studio.
     57 
     58 Support
     59 -------
     60 
     61 - Google+ Community: https://plus.google.com/communities/105153134372062985968
     62 - Stack Overflow: http://stackoverflow.com/questions/tagged/android
     63 
     64 If you've found an error in this sample, please file an issue:
     65 https://github.com/googlesamples/android-NotificationChannels
     66 
     67 Patches are encouraged, and may be submitted by forking this project and
     68 submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.
     69 
     70 License
     71 -------
     72 
     73 Copyright 2017 The Android Open Source Project, Inc.
     74 
     75 Licensed to the Apache Software Foundation (ASF) under one or more contributor
     76 license agreements.  See the NOTICE file distributed with this work for
     77 additional information regarding copyright ownership.  The ASF licenses this
     78 file to you under the Apache License, Version 2.0 (the "License"); you may not
     79 use this file except in compliance with the License.  You may obtain a copy of
     80 the License at
     81 
     82 http://www.apache.org/licenses/LICENSE-2.0
     83 
     84 Unless required by applicable law or agreed to in writing, software
     85 distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
     86 WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
     87 License for the specific language governing permissions and limitations under
     88 the License.
     89