我有一个Firebase服务，可在数据消息上创建通知。
看起来像
public class KaliumMessagingService extends FirebaseMessagingService {
private static final String TAG = KaliumMessagingService.class.getSimpleName();
private static final String NOTIFICATION_CHANNEL_ID = "natrium_notification_channel";
private final String NOTIF_GROUP_ID = "NATRIUM_NOTIF_GROUP";
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
if (remoteMessage.getData() != null && !MainActivity.appInForeground) {
sendNotification(remoteMessage);
}
}
@Override
public void onNewToken(String token) {
super.onNewToken(token);
SharedPreferencesUtil sharedPreferencesUtil = new SharedPreferencesUtil(this);
sharedPreferencesUtil.setFcmToken(token);
}
public void initChannels(Context context) {
if (Build.VERSION.SDK_INT < 26) {
return;
}
NotificationManager notificationManager =
(NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
NotificationChannel channel = new NotificationChannel(NOTIFICATION_CHANNEL_ID,
getString(R.string.app_name),
NotificationManager.IMPORTANCE_HIGH);
channel.setDescription("Natrium transaction alerts");
notificationManager.createNotificationChannel(channel);
}
private void sendNotification(RemoteMessage remoteMessage) {
Map<String, String> data = remoteMessage.getData();
String amount = data.get("amount");
if (amount == null) {
return;
}
initChannels(this);
try (Realm realm = Realm.getDefaultInstance()) {
Credentials c = realm.where(Credentials.class).findFirst();
// If not logged in, shouldn't post notifications
if (c == null) {
return;
}
}
NotificationManager nm = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID);
Intent notificationIntent = new Intent(this, MainActivity.class);
PendingIntent contentIntent = PendingIntent.getActivity(this,0,notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);
Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
builder.setContentIntent(contentIntent);
builder.setSmallIcon(R.drawable.ic_status_bar);
builder.setContentText(getString(R.string.notification_body));
builder.setContentTitle(getString(R.string.notification_title, NumberUtil.getRawAsUsableString(amount)));
builder.setAutoCancel(true);
builder.setGroup(NOTIF_GROUP_ID);
builder.setSound(defaultSoundUri);
Notification pushNotification = builder.build();
nm.notify((int)System.currentTimeMillis(), pushNotification);
}
}
它可以工作，但是所有通知都是单独的。我希望它们都可以组合在一起/可扩展。然后单击它会打开主要活动并关闭所有通知。
我以为setGroup会达到这种效果，但似乎没有任何作用。
谢谢
答案 0 :(得分：0)
I ended up solving it as described in this blog post
https://blog.hopbucket.com/merge-firebase-notifications-9f96de7d026a
public class KaliumMessagingService extends FirebaseMessagingService {
private static final String TAG = KaliumMessagingService.class.getSimpleName();
private static final String NOTIFICATION_CHANNEL_ID = "natrium_notification_channel";
private int NOTIFICATION_ID = 1337;
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
SharedPreferencesUtil sharedPreferencesUtil = new SharedPreferencesUtil(this);
if (remoteMessage.getData() != null && !MainActivity.appInForeground && sharedPreferencesUtil.getNotificationSetting() != NotificationOption.OFF) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
sendNotification(remoteMessage);
} else {
sendNotificationLegacy(remoteMessage);
}
}
}
@Override
public void onNewToken(String token) {
super.onNewToken(token);
SharedPreferencesUtil sharedPreferencesUtil = new SharedPreferencesUtil(this);
sharedPreferencesUtil.setFcmToken(token);
}
public void initChannels(Context context) {
if (Build.VERSION.SDK_INT < 26) {
return;
}
NotificationManager notificationManager =
(NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
NotificationChannel channel = new NotificationChannel(NOTIFICATION_CHANNEL_ID,
getString(R.string.app_name),
NotificationManager.IMPORTANCE_HIGH);
channel.setDescription("Natrium transaction alerts");
notificationManager.createNotificationChannel(channel);
}
private void sendNotificationLegacy(RemoteMessage remoteMessage) {
Map<String, String> data = remoteMessage.getData();
String amount = data.get("amount");
if (amount == null) {
return;
}
initChannels(this);
try (Realm realm = Realm.getDefaultInstance()) {
Credentials c = realm.where(Credentials.class).findFirst();
// If not logged in, shouldn't post notifications
if (c == null) {
return;
}
}
NotificationManager nm = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID);
Intent notificationIntent = new Intent(this, MainActivity.class);
PendingIntent contentIntent = PendingIntent.getActivity(this,0,notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);
Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
builder.setContentIntent(contentIntent);
builder.setSmallIcon(R.drawable.ic_status_bar);
builder.setContentText(getString(R.string.notification_body));
builder.setContentTitle(getString(R.string.notification_title, NumberUtil.getRawAsUsableString(amount)));
builder.setAutoCancel(true);
builder.setGroup(TAG);
builder.setSound(defaultSoundUri);
Notification pushNotification = builder.build();
nm.notify((int)System.currentTimeMillis(), pushNotification);
}
@TargetApi(Build.VERSION_CODES.M)
private void sendNotification(RemoteMessage remoteMessage) {
Map<String, String> data = remoteMessage.getData();
String amount = data.get("amount");
if (amount == null) {
return;
}
initChannels(this);
try (Realm realm = Realm.getDefaultInstance()) {
Credentials c = realm.where(Credentials.class).findFirst();
// If not logged in, shouldn't post notifications
if (c == null) {
return;
}
}
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
Intent onCancelNotificationReceiver = new Intent(this, CancelNotificationReceiver.class);
PendingIntent onCancelNotificationReceiverPendingIntent = PendingIntent.getBroadcast(this.getApplicationContext(), 0,
onCancelNotificationReceiver, 0);
NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
StatusBarNotification[] notifications = manager.getActiveNotifications();
for (int i = 0; i < notifications.length; i++) {
if (notifications[i].getPackageName().equals(getApplicationContext().getPackageName())) {
Intent startNotificationActivity = new Intent(this, MainActivity.class);
startNotificationActivity.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, startNotificationActivity,
PendingIntent.FLAG_ONE_SHOT);
Notification notification = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID)
.setSmallIcon(R.drawable.ic_status_bar)
.setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher))
.setContentTitle(getString(R.string.notification_title, NumberUtil.getRawAsUsableString(amount)))
.setContentText(getString(R.string.notification_body))
.setAutoCancel(true)
.setStyle(getStyleForNotification(getString(R.string.notification_body)))
.setGroupSummary(true)
.setGroup(TAG)
.setContentIntent(pendingIntent)
.setDeleteIntent(onCancelNotificationReceiverPendingIntent)
.build();
SharedPreferences sharedPreferences = getSharedPreferences("NotificationData", 0);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putString(String.valueOf(new Random(NOTIFICATION_ID)), getString(R.string.notification_body));
editor.apply();
notificationManager.notify(NOTIFICATION_ID, notification);
return;
}
}
Intent intent = new Intent(this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent,
PendingIntent.FLAG_ONE_SHOT);
Notification notificationBuilder = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID)
.setSmallIcon(R.drawable.ic_status_bar)
.setContentTitle(getString(R.string.notification_title, NumberUtil.getRawAsUsableString(amount)))
.setContentText(getString(R.string.notification_body))
.setAutoCancel(true)
.setGroup(TAG)
.setContentIntent(pendingIntent)
.setDeleteIntent(onCancelNotificationReceiverPendingIntent)
.build();
SharedPreferences sharedPreferences = getSharedPreferences("NotificationData", 0);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putString(String.valueOf(new Random(NOTIFICATION_ID)), getString(R.string.notification_body));
editor.apply();
notificationManager.notify(NOTIFICATION_ID, notificationBuilder);
}
private NotificationCompat.InboxStyle getStyleForNotification(String messageBody) {
NotificationCompat.InboxStyle inbox = new NotificationCompat.InboxStyle();
SharedPreferences sharedPref = getSharedPreferences("NotificationData", 0);
Map<String, String> notificationMessages = (Map<String, String>) sharedPref.getAll();
Map<String, String> myNewHashMap = new HashMap<>();
for (Map.Entry<String, String> entry : notificationMessages.entrySet()) {
myNewHashMap.put(entry.getKey(), entry.getValue());
}
inbox.addLine(messageBody);
for (Map.Entry<String, String> message : myNewHashMap.entrySet()) {
inbox.addLine(message.getValue());
}
inbox.setBigContentTitle(this.getResources().getString(R.string.app_name))
.setSummaryText(getString(R.string.notificaiton_header_suplement));
return inbox;
}
}