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      1 /*
      2  * Copyright (C) 2017 Google Inc. All Rights Reserved.
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package com.example.android.wearable.wear.common.util;
     17 
     18 import android.app.Notification;
     19 import android.app.NotificationChannel;
     20 import android.app.NotificationManager;
     21 import android.content.Context;
     22 import android.os.Build;
     23 
     24 import com.example.android.wearable.wear.common.mock.MockDatabase;
     25 
     26 /**
     27  * Simplifies common {@link Notification} tasks.
     28  */
     29 public class NotificationUtil {
     30 
     31     public static String createNotificationChannel(
     32             Context context,
     33             MockDatabase.MockNotificationData mockNotificationData) {
     34 
     35         // NotificationChannels are required for Notifications on O (API 26) and above.
     36         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
     37 
     38             // The id of the channel.
     39             String channelId = mockNotificationData.getChannelId();
     40 
     41             // The user-visible name of the channel.
     42             CharSequence channelName = mockNotificationData.getChannelName();
     43             // The user-visible description of the channel.
     44             String channelDescription = mockNotificationData.getChannelDescription();
     45             int channelImportance = mockNotificationData.getChannelImportance();
     46             boolean channelEnableVibrate = mockNotificationData.isChannelEnableVibrate();
     47             int channelLockscreenVisibility =
     48                     mockNotificationData.getChannelLockscreenVisibility();
     49 
     50             // Initializes NotificationChannel.
     51             NotificationChannel notificationChannel =
     52                     new NotificationChannel(channelId, channelName, channelImportance);
     53             notificationChannel.setDescription(channelDescription);
     54             notificationChannel.enableVibration(channelEnableVibrate);
     55             notificationChannel.setLockscreenVisibility(channelLockscreenVisibility);
     56 
     57             // Adds NotificationChannel to system. Attempting to create an existing notification
     58             // channel with its original values performs no operation, so it's safe to perform the
     59             // below sequence.
     60             NotificationManager notificationManager =
     61                     (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
     62             notificationManager.createNotificationChannel(notificationChannel);
     63 
     64             return channelId;
     65         } else {
     66             // Returns null for pre-O (26) devices.
     67             return null;
     68         }
     69     }
     70 }
     71