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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed 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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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
*/
package com.android.dialer.notification;
import android.annotation.TargetApi;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.content.Context;
import android.media.AudioAttributes;
import android.os.Build.VERSION_CODES;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.os.BuildCompat;
import android.telecom.PhoneAccountHandle;
import android.util.ArraySet;
import com.android.dialer.common.Assert;
import com.android.dialer.common.LogUtil;
import java.util.Set;
/** Creates all notification channels for Dialer. */
@TargetApi(VERSION_CODES.O)
public final class NotificationChannelManager {
/**
* Creates all the notification channels Dialer will need. This method is called at app startup
* and must be fast. Currently it takes between 3 to 7 milliseconds on a Pixel XL.
*
* <p>An alternative approach would be to lazily create channels when we actualy post a
* notification. The advatange to precreating channels is that:
*
* <ul>
* <li>channels will be available to user right away. For example, users can customize voicemail
* sounds when they first get their device without waiting for a voicemail to arrive first.
* <li>code that posts a notification can be simpler
* <li>channel management code is simpler and it's easier to ensure that the correct set of
* channels are visible.
* <ul>
*/
public static void initChannels(@NonNull Context context) {
Assert.checkArgument(BuildCompat.isAtLeastO());
Assert.isNotNull(context);
NotificationManager notificationManager = context.getSystemService(NotificationManager.class);
Set<String> desiredChannelIds = getAllDesiredChannelIds(context);
Set<String> existingChannelIds = getAllExistingChannelIds(context);
if (desiredChannelIds.equals(existingChannelIds)) {
return;
}
LogUtil.i(
"NotificationChannelManager.initChannels",
"doing an expensive initialization of all notification channels");
LogUtil.i(
"NotificationChannelManager.initChannels", "desired channel IDs: " + desiredChannelIds);
LogUtil.i(
"NotificationChannelManager.initChannels", "existing channel IDs: " + existingChannelIds);
// Delete any old channels that we don't use any more. This is safe because if we're recreate
// this later then any user settings will be restored. An example is SIM specific voicemail
// channel that gets deleted when the user removes the SIM and is then restored when the user
// re-inserts the SIM.
for (String existingChannelId : existingChannelIds) {
if (!desiredChannelIds.contains(existingChannelId)) {
notificationManager.deleteNotificationChannel(existingChannelId);
}
}
// Just recreate all desired channels. We won't do this often so it's ok to do this now.
createIncomingCallChannel(context);
createOngoingCallChannel(context);
createMissedCallChannel(context);
createDefaultChannel(context);
VoicemailChannelUtils.createAllChannels(context);
}
@NonNull
public static String getVoicemailChannelId(
@NonNull Context context, @Nullable PhoneAccountHandle handle) {
Assert.checkArgument(BuildCompat.isAtLeastO());
Assert.isNotNull(context);
return VoicemailChannelUtils.getChannelId(context, handle);
}
private static Set<String> getAllExistingChannelIds(@NonNull Context context) {
Set<String> result = new ArraySet<>();
NotificationManager notificationManager = context.getSystemService(NotificationManager.class);
for (NotificationChannel channel : notificationManager.getNotificationChannels()) {
result.add(channel.getId());
}
return result;
}
private static Set<String> getAllDesiredChannelIds(@NonNull Context context) {
Set<String> result = new ArraySet<>();
result.add(NotificationChannelId.INCOMING_CALL);
result.add(NotificationChannelId.ONGOING_CALL);
result.add(NotificationChannelId.MISSED_CALL);
result.add(NotificationChannelId.DEFAULT);
result.addAll(VoicemailChannelUtils.getAllChannelIds(context));
return result;
}
private static void createIncomingCallChannel(@NonNull Context context) {
NotificationChannel channel =
new NotificationChannel(
NotificationChannelId.INCOMING_CALL,
context.getText(R.string.notification_channel_incoming_call),
NotificationManager.IMPORTANCE_MAX);
channel.setShowBadge(false);
channel.enableLights(true);
channel.enableVibration(false);
channel.setSound(
null, new AudioAttributes.Builder().setUsage(AudioAttributes.USAGE_NOTIFICATION).build());
context.getSystemService(NotificationManager.class).createNotificationChannel(channel);
}
private static void createOngoingCallChannel(@NonNull Context context) {
NotificationChannel channel =
new NotificationChannel(
NotificationChannelId.ONGOING_CALL,
context.getText(R.string.notification_channel_ongoing_call),
NotificationManager.IMPORTANCE_DEFAULT);
channel.setShowBadge(false);
channel.enableLights(false);
channel.enableVibration(false);
channel.setSound(
null, new AudioAttributes.Builder().setUsage(AudioAttributes.USAGE_NOTIFICATION).build());
context.getSystemService(NotificationManager.class).createNotificationChannel(channel);
}
private static void createMissedCallChannel(@NonNull Context context) {
NotificationChannel channel =
new NotificationChannel(
NotificationChannelId.MISSED_CALL,
context.getText(R.string.notification_channel_missed_call),
NotificationManager.IMPORTANCE_DEFAULT);
channel.setShowBadge(true);
channel.enableLights(true);
channel.enableVibration(true);
channel.setSound(
null, new AudioAttributes.Builder().setUsage(AudioAttributes.USAGE_NOTIFICATION).build());
context.getSystemService(NotificationManager.class).createNotificationChannel(channel);
}
private static void createDefaultChannel(@NonNull Context context) {
NotificationChannel channel =
new NotificationChannel(
NotificationChannelId.DEFAULT,
context.getText(R.string.notification_channel_misc),
NotificationManager.IMPORTANCE_DEFAULT);
channel.setShowBadge(false);
channel.enableLights(true);
channel.enableVibration(true);
context.getSystemService(NotificationManager.class).createNotificationChannel(channel);
}
private NotificationChannelManager() {}
}
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