1 /*
2  * Copyright (C) 2017 The Android Open Source Project
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.android.internal.telephony.util;
17 
18 import android.app.NotificationChannel;
19 import android.app.NotificationManager;
20 import android.content.BroadcastReceiver;
21 import android.content.Context;
22 import android.content.Intent;
23 import android.content.IntentFilter;
24 import android.media.AudioAttributes;
25 import android.net.Uri;
26 import android.provider.Settings;
27 import android.telephony.SubscriptionManager;
28 
29 import com.android.internal.R;
30 
31 import java.util.Arrays;
32 
33 
34 public class NotificationChannelController {
35 
36     /**
37      * list of {@link android.app.NotificationChannel} for telephony service.
38      */
39     public static final String CHANNEL_ID_ALERT = "alert";
40     public static final String CHANNEL_ID_CALL_FORWARD = "callForward";
41     public static final String CHANNEL_ID_MOBILE_DATA_STATUS = "mobileDataAlertNew";
42     public static final String CHANNEL_ID_SIM = "sim";
43     public static final String CHANNEL_ID_SMS = "sms";
44     public static final String CHANNEL_ID_VOICE_MAIL = "voiceMail";
45     public static final String CHANNEL_ID_WFC = "wfc";
46 
47     /** deprecated channel, replaced with @see #CHANNEL_ID_MOBILE_DATA_STATUS */
48     private static final String CHANNEL_ID_MOBILE_DATA_ALERT_DEPRECATED = "mobileDataAlert";
49 
50     /**
51      * Creates all notification channels and registers with NotificationManager. If a channel
52      * with the same ID is already registered, NotificationManager will ignore this call.
53      */
createAll(Context context)54     private static void createAll(Context context) {
55         final NotificationChannel alertChannel = new NotificationChannel(
56                 CHANNEL_ID_ALERT,
57                 context.getText(R.string.notification_channel_network_alert),
58                 NotificationManager.IMPORTANCE_DEFAULT);
59         alertChannel.setSound(Settings.System.DEFAULT_NOTIFICATION_URI,
60                 new AudioAttributes.Builder().setUsage(AudioAttributes.USAGE_NOTIFICATION).build());
61         // allow users to block notifications from system
62         alertChannel.setBlockableSystem(true);
63 
64         final NotificationChannel mobileDataStatusChannel = new NotificationChannel(
65                 CHANNEL_ID_MOBILE_DATA_STATUS,
66                 context.getText(R.string.notification_channel_mobile_data_status),
67                 NotificationManager.IMPORTANCE_LOW);
68         // allow users to block notifications from system
69         mobileDataStatusChannel.setBlockableSystem(true);
70 
71         final NotificationChannel simChannel = new NotificationChannel(
72                 CHANNEL_ID_SIM,
73                 context.getText(R.string.notification_channel_sim),
74                 NotificationManager.IMPORTANCE_LOW
75         );
76 
77         simChannel.setSound(null, null);
78 
79         context.getSystemService(NotificationManager.class)
80                 .createNotificationChannels(Arrays.asList(
81                 new NotificationChannel(CHANNEL_ID_CALL_FORWARD,
82                         context.getText(R.string.notification_channel_call_forward),
83                         NotificationManager.IMPORTANCE_LOW),
84                 new NotificationChannel(CHANNEL_ID_SMS,
85                         context.getText(R.string.notification_channel_sms),
86                         NotificationManager.IMPORTANCE_HIGH),
87                 new NotificationChannel(CHANNEL_ID_WFC,
88                         context.getText(R.string.notification_channel_wfc),
89                         NotificationManager.IMPORTANCE_LOW),
90                 alertChannel,
91                 mobileDataStatusChannel,
92                 simChannel));
93         // only for update
94         if (getChannel(CHANNEL_ID_VOICE_MAIL, context) != null) {
95             migrateVoicemailNotificationSettings(context);
96         }
97         // after channel has been created there is no way to change the channel setting
98         // programmatically. delete the old channel and create a new one with a new ID.
99         if (getChannel(CHANNEL_ID_MOBILE_DATA_ALERT_DEPRECATED, context) != null) {
100             context.getSystemService(NotificationManager.class)
101                     .deleteNotificationChannel(CHANNEL_ID_MOBILE_DATA_ALERT_DEPRECATED);
102         }
103     }
104 
NotificationChannelController(Context context)105     public NotificationChannelController(Context context) {
106         IntentFilter intentFilter = new IntentFilter();
107         intentFilter.addAction(Intent.ACTION_LOCALE_CHANGED);
108         intentFilter.addAction(Intent.ACTION_SIM_STATE_CHANGED);
109         context.registerReceiver(mBroadcastReceiver, intentFilter);
110         createAll(context);
111     }
112 
getChannel(String channelId, Context context)113     public static NotificationChannel getChannel(String channelId, Context context) {
114         return context.getSystemService(NotificationManager.class)
115                 .getNotificationChannel(channelId);
116     }
117 
118     /**
119      * migrate deprecated voicemail notification settings to initial notification channel settings
120      * {@link VoicemailNotificationSettingsUtil#getRingTonePreference(Context)}}
121      * {@link VoicemailNotificationSettingsUtil#getVibrationPreference(Context)}
122      * notification settings are based on subId, only migrate if sub id matches.
123      * otherwise fallback to predefined voicemail channel settings.
124      * @param context
125      */
migrateVoicemailNotificationSettings(Context context)126     private static void migrateVoicemailNotificationSettings(Context context) {
127         final NotificationChannel voiceMailChannel = new NotificationChannel(
128                 CHANNEL_ID_VOICE_MAIL,
129                 context.getText(R.string.notification_channel_voice_mail),
130                 NotificationManager.IMPORTANCE_DEFAULT);
131         voiceMailChannel.enableVibration(
132                 VoicemailNotificationSettingsUtil.getVibrationPreference(context));
133         Uri sound = VoicemailNotificationSettingsUtil.getRingTonePreference(context);
134         voiceMailChannel.setSound(
135                 (sound == null) ? Settings.System.DEFAULT_NOTIFICATION_URI : sound,
136                 new AudioAttributes.Builder().setUsage(AudioAttributes.USAGE_NOTIFICATION).build());
137         context.getSystemService(NotificationManager.class)
138                 .createNotificationChannel(voiceMailChannel);
139     }
140 
141     private final BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
142         @Override
143         public void onReceive(Context context, Intent intent) {
144             if (Intent.ACTION_LOCALE_CHANGED.equals(intent.getAction())) {
145                 // rename all notification channels on locale change
146                 createAll(context);
147             } else if (Intent.ACTION_SIM_STATE_CHANGED.equals(intent.getAction())) {
148                 // migrate voicemail notification settings on sim load
149                 if (SubscriptionManager.INVALID_SUBSCRIPTION_ID !=
150                         SubscriptionManager.getDefaultSubscriptionId()) {
151                     migrateVoicemailNotificationSettings(context);
152                 }
153             }
154         }
155     };
156 }
157