Develop Reference

Not able to add same Users message in Same group of Android Nougat Push Notifications as whatsapp

Here I'm trying to show chat messages in groups like whatsapp does in Android 7.0 or more but they're not getting displayed like that. I'm sending local push notifications by getting chat messages from Node.js. In android, I'm using socket client to fetch them and sending push notifications to the other user if their apps are in background. Multiple messages are going in one group but when I try to create a new group when some one else send messages its adding in a same group.
It just updates the title of push notification as I'm doing here:
public static void bundledNotification(String message, String name, String uId) {
Context context = ApplicationClass.context();
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(context);
++numberOfBundled;
issuedMessages.add(message);
//Build and issue the group summary. Use inbox style so that all messages are displayed
NotificationCompat.Builder summaryBuilder = new NotificationCompat.Builder(context)
.setContentTitle(name)
.setContentText(message)
.setSmallIcon(R.mipmap.ic_launcher)
.setGroupSummary(true)
.setGroup(uId);
NotificationCompat.InboxStyle inboxStyle =
new NotificationCompat.InboxStyle();
inboxStyle.setBigContentTitle("Messages:");
for (CharSequence cs : issuedMessages) {
inboxStyle.addLine(cs);
}
summaryBuilder.setStyle(inboxStyle);
notificationManager.notify(NOTIFICATION_BUNDLED_BASE_ID, summaryBuilder.build());
//Pending Intent
Intent notificationIntent = new Intent(context, ChatMessageActivity.class);
notificationIntent.putExtra("uid", Integer.parseInt(uId));
notificationIntent.putExtra(context.getString(R.string.notify_id), Integer.parseInt(uId));
TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
// Adds the back stack
stackBuilder.addParentStack(ChatMessageActivity.class);
// Adds the Intent to the top of the stack
stackBuilder.addNextIntent(notificationIntent);
PendingIntent contentIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
//issue the Bundled notification. Since there is a summary notification, this will only display
//on systems with Nougat or later
NotificationCompat.Builder builder = new NotificationCompat.Builder(context)
.setContentTitle(name)
.setContentText(message)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentIntent(contentIntent)
.setGroupSummary(true)
.setStyle(new NotificationCompat.BigTextStyle()
.bigText(name))
.setGroup(uId);
//Each notification needs a unique request code, so that each pending intent is unique. It does not matter
//in this simple case, but is important if we need to take action on a specific notification, such as
//deleting a message
int requestCode = NOTIFICATION_BUNDLED_BASE_ID + numberOfBundled;
if (messagesMap.get(uId) != null) {
messagesMap.get(uId).add(message);
} else {
ArrayList<String> messageList = new ArrayList<String>();
messageList.add(message);
messagesMap.put(uId, messageList);
notificationManager.notify(NOTIFICATION_BUNDLED_BASE_ID + numberOfBundled, builder.build());
}
AppPreferences.setChatNotificationNumber(context, AppUtils.PUSH_CHATS_NOTIFICATION_NUMBER, requestCode);
NotificationCompat.Builder childBuilder = new NotificationCompat.Builder(context)
.setContentTitle(name)
.setContentText(message)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentIntent(contentIntent)
.setStyle(new NotificationCompat.BigTextStyle()
.bigText(message))
.setGroup(uId);
notificationManager.notify(requestCode,
childBuilder.build());
}
From above code it's always creating a one more notification at first time and second time it starts adding messages into old notification. But when I'm trying to add old messages into the thread of same user it creates a new message under main group of notification. Thanks in advance.

Use same setGroup and notification(NOTIFICATION_BUNDLED_BASE_ID) id(group wise)
Context context = ApplicationClass.context();
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(context);
++numberOfBundled;
issuedMessages.add(message);
//Build and issue the group summary. Use inbox style so that all messages are displayed
NotificationCompat.Builder summaryBuilder = new NotificationCompat.Builder(context)
.setContentTitle(name)
.setContentText(message)
.setSmallIcon(R.mipmap.ic_launcher)
.setGroupSummary(true)
.setGroup(1001);
NotificationCompat.InboxStyle inboxStyle =
new NotificationCompat.InboxStyle();
inboxStyle.setBigContentTitle("Messages:");
for (CharSequence cs : issuedMessages) {
inboxStyle.addLine(cs);
}
summaryBuilder.setStyle(inboxStyle);
notificationManager.notify(1001, summaryBuilder.build());

Group notifications on Android

I want to show notifications like on picture. If there is more than one, I want to show a counter too. I didn't find info in official doc. Now I just update my notification by id:
((NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE))
.notify(PUSH_NOTIFICATION_ID, notification);
How can I do it ?

NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(getApplicationContext());
mBuilder.setSmallIcon(R.mipmap.ic_launcher);
mBuilder.setContentTitle(topic);
mBuilder.setContentText(new String(message.getPayload()));
mBuilder.setAutoCancel(true);
mBuilder.mNumber = 1;//get your number of notification from where you have save notification
NotificationManager mNotifyMgr = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
mNotifyMgr.notify(notify_id, mBuilder.build());

To create a stack, call setGroup() for each notification you want in the stack and specify a group key.
final static String GROUP_KEY_EMAILS = "group_key_emails";
// Build the notification, setting the group appropriately
Notification notif = new NotificationCompat.Builder(mContext)
.setContentTitle("New mail from " + sender1)
.setContentText(subject1)
.setSmallIcon(R.drawable.new_mail)
.setGroup(GROUP_KEY_EMAILS)
.build();
// Issue the notification
NotificationManagerCompat notificationManager =
NotificationManagerCompat.from(this);
notificationManager.notify(notificationId1, notif);
Reference: https://developer.android.com/training/wearables/notifications/stacks.html

how to hide data/message of push notification in android

I have successfully implement the fcm notification using java server but I want to show only one string in notification instead of all message so how to hide data and send only some data of message.
for e.g "refresh data common" I want to show only refresh data in notification message and hide common but common word requires on app side.
private void showSmallNotification(NotificationCompat.Builder mBuilder, int icon, String title, String message, PendingIntent resultPendingIntent, Uri alarmSound)
{
NotificationCompat.InboxStyle inboxStyle = new NotificationCompat.InboxStyle();
inboxStyle.addLine(message);
Notification notification;
notification = mBuilder.setSmallIcon(icon).setTicker(title).setWhen(0)
.setAutoCancel(true)
.setContentTitle(title)
.setContentIntent(resultPendingIntent)
.setSound(alarmSound)
.setStyle(inboxStyle)
/* .setSmallIcon(R.drawable.space)*/
.setLargeIcon(BitmapFactory.decodeResource(mContext.getResources(), icon))
.setContentText(message)
.build();
NotificationManager notificationManager = (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(Config.NOTIFICATION_ID, notification);
}
In this code I have pass only "refresh data" but it show all"{message=refresh data common}".

setgroup() in notification not working

I'm tring to create notification group, this is my code:
// Build the notification, setting the group appropriately
Notification notif = new NotificationCompat.Builder(getApplicationContext())
.setContentTitle("New mail from " + 1)
.setContentText("cv")
.setSmallIcon(R.drawable.rh_logo)
.setStyle(new NotificationCompat.InboxStyle()
.addLine("Alex Faaborg Check this out")
.addLine("Jeff Chang Launch Party")
.setBigContentTitle("2 new messages")
.setSummaryText("johndoe#gmail.com"))
.setGroup(GROUP_KEY_EMAILS)
.setGroupSummary(true)
.build();
// Issue the notification
NotificationManager notificationManager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(++NOTIFICATION_ID, notif);
When I run the app, and send notification messages, they do not show in group.
Can someone explain me what I need to change?

You have to create a group notification before creating your custom notification. Just like this:
NotificationCompat.Builder groupBuilder =
new NotificationCompat.Builder(context)
.setContentTitle(title)
.setContentText(content)
.setGroupSummary(true)
.setGroup("GROUP_1")
.setStyle(new NotificationCompat.BigTextStyle().bigText(content))
.setContentIntent(pendingIntent);
Do not forget setGroupSummary to true.
Then create your child notification which group value is same to groupBuilder's value。Here is "GROUP_1".
NotificationCompat.Builder builder =
new NotificationCompat.Builder(context)
.setSmallIcon(R.drawable.ic_stat_communication_invert_colors_on)
.setContentTitle(title)
.setContentText(content)
.setGroup("GROUP_1")
.setStyle(new NotificationCompat.BigTextStyle().bigText(content))
.setContentIntent(pendingIntent)
Finally use NoticationManagerCompat to notify them.
NotificationManagerCompat manager = NotificationManagerCompat.from(context);
manager.notify(GROUP_ID, groupBuilder.build());
manager.notify(id, builder.build());

Replace
NotificationManager notificationManager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(++NOTIFICATION_ID, notif);
with
NotificationManagerCompat.from(mCtx).notify(++NOTIFICATION_ID,notif);
because you are using NotificationCompat

There is a strange behavior of notification. If you add autocancel notification group doesn't work, if you add setGroup or setGroupSummary. It will not work. Removing all that fixed the problem for me. Basically, you don't need to mention any group it will auto group. TESTED on Redmi 10 pr0, Poco x3 NFC, huawei device.
return new NotificationCompat.Builder(context, CHANNEL_ID)
.setSmallIcon(R.drawable.ic_action_name)
.setContentTitle(title)
.setContentText(body)
.setStyle(new NotificationCompat.BigTextStyle().bigText(body))
.setPriority(NotificationCompat.PRIORITY_LOW);

Android:Modify Pending Notification's Content

I am trying to modify existing notifications in android.
What I have in my app
When a notification is already in system tray and another notification appears, the second one overwrites the first notification content.
What I am looking for
If second Notification arrives then instead of overwriting the first I need to change title to show 2 New Messages and go on incrementing as notifications arrive.
Code Implemented
Bitmap icon = BitmapFactory.decodeResource(ctx.getResources(),
R.drawable.icon);
Intent launchActivity = new Intent(ctx, CordovaApp.class);
launchActivity.putExtra("heading",newsHeader);
launchActivity.putExtra("content",newsText);
PendingIntent pi = PendingIntent.getActivity(ctx,0, launchActivity, PendingIntent.FLAG_NO_CREATE);
ParseAnalytics.trackAppOpened(launchActivity);
if(pi==null){
Log.d(TAG, "Pending Intenet is null.");
}else{
Log.d(TAG, "Pending Intenet is not null.");
}
Notification noti = new NotificationCompat.Builder(ctx)
.setContentTitle(newsHeader)
.setContentText(newsText)
.setSmallIcon(R.drawable.icon)
.setLargeIcon(icon)
.setContentIntent(pi)
.setAutoCancel(true)
.build();
NotificationManager nm = (NotificationManager)ctx.getSystemService(Context.NOTIFICATION_SERVICE);
nm.notify(0, noti);
Update
I implemented the solution mentioned below by #yogendra and now I am getting two separate notifications. Instead of getting stacked. Below is updated code
Notification noti = new NotificationCompat.Builder(ctx)
.setContentTitle(newsHeader)
.setContentText(newsText)
.setSmallIcon(R.drawable.icon)
.setGroup(GROUP_KEY_EMAILS)
.setLargeIcon(icon)
.setContentIntent(pi)
.setLights(Color.parseColor("green"), 5000, 5000)
.setAutoCancel(true)
.setPriority(2)
.setTicker("Notification from App")
.setGroupSummary(true)
.build();
NotificationManager nm = (NotificationManager)ctx.getSystemService(Context.NOTIFICATION_SERVICE);
int timeSeconds = (int)System.currentTimeMillis()%Integer.MAX_VALUE;
Log.i(TAG,"Timing function called "+timeSeconds);
nm.notify(timeSeconds, noti);

See your code
nm.notify(0, noti);
where
notify(int id, Notification notification)
Here 0 is the ID of notification which is to be managed with respect to each notification. If you want to show a different notification your notification id should be unique each time. If you try to post a notification with the same notification id your previously displayed notification will be replaced with the latest notification.
Solution
Now you need to display a custom notification with a custom layout and update the counter each time .
Source code to create a Custom Notification.

create global variable in your class :
private int count = 0;
private ArrayList<String> notificationList = new ArrayList<String>();
private String GROUP_KEY_EMAILS = "email";
/call method createNotification when you need to create notification and pass message what you need to show on message./
private void createNotification(String notificationMassage) {
notificationList.add(notificationMassage);
NotificationManager mNotificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
Bitmap largeIcon = BitmapFactory.decodeResource(getResources(),
R.drawable.ic_launcher);
// Create builder
Builder summaryNotification = new NotificationCompat.Builder(this)
.setContentTitle(notificationList.size()+" new messages")
.setSmallIcon(R.drawable.settings)
.setLargeIcon(largeIcon)
.setGroup(GROUP_KEY_EMAILS)
.setGroupSummary(true)
.setAutoCancel(true);
// Create style
InboxStyle nStyle = new NotificationCompat.InboxStyle();
nStyle.setBigContentTitle(notificationList.size()+" new messages");
nStyle.setSummaryText("Summery Text...<you can set as blank>");
for (String Str : notificationList) {
nStyle.addLine(Str);
}
summaryNotification.setStyle(nStyle);
mNotificationManager.notify(0, summaryNotification.build());
count++;
}
/**
please clear notification array list after tap on notification.
*/
For more detail please refer below link:
https://developer.android.com/training/wearables/notifications/stacks.html#AddGroup
https://developer.android.com/training/wearables/notifications/stacks.html#AddGroup