I'm having an issue where Firebase Cloud Messaging will send notifications to the emulator (Android 7.0, with play services installed) but not to any device (Google Pixel 2, Samsung s9+ , Huawei MATE 10) running Android 8+. I initially thought it might have been a power saving issue closing off the listener but even when I remove optimisation from the app, it still doesn't come through.
I know the downstream request is being sent successfully and I'm receiving status code 200 from the response (and of course because the notification is being received on the emulator). When debugging on the devices however, the onMessageReceived in my FCMService class is not being called at all, whether in the foreground or background.
It's definitely registered in the manifest and each device is using the same version of the application:
<service android:name=".services.FCMService">
<intent-filter>
<action android:name="com.google.firebase.MESSAGING_EVENT"/>
</intent-filter>
</service>
If there is any more information required, let me know. Thanks in advance.
Why was this happening?
I realised when I entered the version numbers into the question that it would have to do with Android Oreo. I was searching for issues with FCM and not recent changes the how notifications work. In Android 26+, notification channels have been introduced and are required if your app is targeting 26 and above (which I was). Because I updated the target SDK without thinking, I of course got hit with no notifications.
How to fix it
The easiest way is to just target API 25 but that's not ideal.
What you can do is register notification channels. I've done this where I handle my notifications (so onMessageReceived) as it doesn't register the same channel more than once.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
// Set the default notification channel settings to be that of alert
int importance = NotificationManager.IMPORTANCE_HIGH;
String channel_id = ALERT_CHANNEL_ID;
CharSequence channel_name = ALERT_CHANNEL_NAME;
String channel_desc = ALERT_CHANNEL_DESC;
// Logic to change the channel id, name and desc if required
// Build and modify channel settings
NotificationChannel channel = new NotificationChannel(channel_id, channel_name, importance);
channel.setDescription(channel_desc);
channel.enableLights(true);
channel.enableVibration(true);
// Create the notification channel
notificationManager.createNotificationChannel(channel);
}
Then you want to change the notification builder:
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, channel_id)
Related
Actually I tried to send notification for single device through Test On Device option in Console. It shows completed but notification not received by device. And then I tried postman and pushtry.com, both of them gave result "Firebase Push Notification Sent Successfully", even though the android device(Google Pixel Version 9) not received. Please help me to resolve this problem.
You are probably not having a Notification channel in your MainActivity you can configure it something like below:
void CreateNotificationChannel()
{
if (Build.VERSION.SdkInt < BuildVersionCodes.O)
{
// Notification channels are new in API 26 (and not a part of the
// support library). There is no need to create a notification
// channel on older versions of Android.
return;
}
var channel = new NotificationChannel(CHANNEL_ID, "FCM Notifications", NotificationImportance.Default)
{
Description = "Firebase Cloud Messages appear in this channel"
};
var notificationManager = (NotificationManager) GetSystemService(NotificationService);
notificationManager.CreateNotificationChannel(channel);
}
And then call it from MainActivity's OnCreate Method
Minimize your application(for example go to dashboard or lock the phone) and send the FCM push notification. If you able receive the notification in this case, that mean you FCM is configured properly. The code you share will only work if you app in in background. IF you wish to receive the notification when app is in background. You have to implement inherit FireBaseMessagingService call and override OnMessageRecived method.
Is there any way I can enable all notification settings by default when my app gets installed ?
Users are receiving notifications but sound is disabled by default and we need to manually enable it on the device. Not all users can do this manually. It would be great to know if there is any way we can check all these things when our app gets installed like WhatsApp or Telegram (they have everything checked by default)
Try using with this below permission in AndroidManifest file
<uses-permission android:name="android.permission.ACCESS_NOTIFICATION_POLICY"/>
and set notification priority for both below and above Oreo versions IMPORTANCE_HIGH for Oreo and above, and PRIORITY_HIGH or PRIORITY_MAX for below Oreo versions
Reference link for priority note
Priority for version below Oreo
mBuilder.setSmallIcon(R.drawable.app_logo)
.setAutoCancel(true)
.setContentIntent(resultPendingIntent)
.setContentTitle(title)
.setStyle(bigPictureStyle)
.setSound(soundUri)
.setPriority(NotificationCompat.PRIORITY_HIGH) // prirority here for version below Oreo
.setWhen(System.currentTimeMillis())
.setLargeIcon(BitmapFactory.decodeResource(mCtx.getResources(), R.drawable.app_logo))
.setContentText(message)
.build();
Priority for Oreo and above
Refer this link
WhatsApp, Telegram, Snapchat, and so on. These are all white-listed apps which means the package names are hardcoded at OS level to allow some of the permissions enabled by default. Our apps are not so. Hence, we need the user to enable those permissions manually.
You can check this by yourself. Create a new android application give the package name of the Telegram application(org.telegram.messenger) and just run it. Don't do any code at all, and no need to open the app too. Simply go to the notification settings of the newly created application, where you find all the permissions enabled by default.
Hope you got the answer.
Android 8 or higher you need to use NotificationChannel to enable sound, vibration, sound etc.
Uri notification_sound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel notificationChannel = new NotificationChannel(CHANNEL_ID, CHANNEL_NAME, NotificationManager.IMPORTANCE_HIGH);
AudioAttributes attributes = new AudioAttributes.Builder()
.setUsage(AudioAttributes.USAGE_NOTIFICATION)
.build();
notificationChannel.setSound(notification_sound, attributes);//for enable sound
notificationChannel.enableLights(true);
notificationManager.createNotificationChannel(notificationChannel);
}
but in Redmi note 5 pro (MIUI 10.2.1.0) still notification sound is disabled. I think there is a bug in MIUI. Run this same code in mi A1(Android one mobile) everything fine. It works.
refer this link to know more about Notification Channel
I have implemented FCM. The messages are receiving in Android N and lower devices.
dependency
implementation "com.google.firebase:firebase-messaging:17.1.0"
I have tried sending messages from firebase console. It showing in Android N but not in Android O.
I have tried sending data notification from the server. Didn't got any call on onMessageReceived() in Android O.
Added channel while showing notification
val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
// Since android Oreo notification channel is needed.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
val channel = NotificationChannel(channelId,
"CRW notification channel",
NotificationManager.IMPORTANCE_HIGH)
notificationManager.createNotificationChannel(channel)
}
notificationManager.notify(0 /* ID of notification */, notificationBuilder.build())
I have checked this in Samsung S2 and One plus 6.
Do I need to do anything extra for Android O other than setting notification channel on showing the notification?
Did you set your FCM to high-priority.
Add this to your message body:
{
...
"priority":"high"
...
}
High priority. FCM attempts to deliver high priority messages immediately, allowing the FCM service to wake a sleeping device when necessary and to run some limited processing (including very limited network access). High priority messages generally should result in user interaction with your app. If FCM detects a pattern in which they don't, your messages may be de-prioritized.
Ref: https://firebase.google.com/docs/cloud-messaging/concept-options#setting-the-priority-of-a-message
Check this on server side the push message is sent as Data Payload or Notification
For android version greater than M it requires to send notification in Data Payload
By passing send Data (on server side).
Also works when app is running in background.
I was just getting started with Android development and managed to get Firebase messaging working after running the wizard. I was able to receive background notifications on my Nexus 5X running Nougat. But then my 5X upgraded to Oreo and Firebase notifications haven't worked since. I've heard about background execution limitations, but since I'm just getting started I don't know what I actually have to do to get it working again. Are there any write ups on this? I tried a new project from scratch hoping the wizard had been updated, but no change. I was using application broadcast messages and topic subscription messages, no device token used.
When you target Android 8.0 (API level 26), you must implement one or more notification channels to display notifications to your users. If you don't target Android 8.0 (API level 26) but your app is used on devices running Android 8.0 (API level 26), your app behaves the same as it would on devices running Android 7.1 (API level 25) or lower.
If you change your target version into Android 8.0 (API level 26), you have to do the following change
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
String id = "id_product";//This will be enter when creating Builder
// The user-visible name of the channel.
CharSequence name = "Product";
// The user-visible description of the channel.
String description = "Notifications regarding our products";
int importance = NotificationManager.IMPORTANCE_MAX;
NotificationChannel mChannel = new NotificationChannel(id, name, importance);
// Configure the notification channel.
mChannel.setDescription(description);
mChannel.enableLights(true);
// Sets the notification light color for notifications posted to this
// channel, if the device supports this feature.
mChannel.setLightColor(Color.RED);
notificationManager.createNotificationChannel(mChannel);
}
Change your Builder constructor
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(applicationContext, **ID you have put in the Notification Channel**)
Finally you can create the notification from the Builder
notificationManager.notify("0", notificationBuilder.build())
Ref: https://developer.android.com/guide/topics/ui/notifiers/notifications.html#ManageChannels
Please use a recent version of the FCM sdk.
FCM sdk introduced support for Android O in April, if you are using older version your app would not receive messages in Android O and could potentially crash.
See the latest release here: https://firebase.google.com/support/release-notes/android
PS: firebase SDK has been moved to the Google Maven repository.
Be sure to check out the latest instructions here:
https://firebase.google.com/docs/android/setup#manually_add_firebase
I'm trying to show a notification-type heads-up but I could not. What I tried
final Notification.Builder notif = new Builder(getApplicationContext())
.setContentTitle(getString(R.string.title))
.setContentText(getString(R.string.text))
// .setTicker(getString(R.string.tick)) removed, seems to not show at all
// .setWhen(System.currentTimeMillis()) removed, match default
// .setContentIntent(contentIntent) removed, I don't neet it
.setColor(Color.parseColor(getString(R.color.yellow))) //ok
.setSmallIcon(R.drawable.ic_small) //ok
.setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher))
// .setCategory(Notification.CATEGORY_CALL) does not seem to make a difference
.setPriority(Notification.PRIORITY_MAX); //does not seem to make a difference
// .setVisibility(Notification.VISIBILITY_PRIVATE); //does not seem to make a difference
mNotificationManager.notify(Constants.NOTIFICATION_ID, notif.build());
The notification is shown only as an icon in the bar.
I'm using API 21 on API 21 emulator (not L preview)
I have tried:
android:Theme.Holo.NoActionBar,
android:Theme.Holo.NoActionBar.Fullscreen
and NotificationCompat.Builder
SDK examples are not available. does anyone know how to do it?
I made it working by adding:
.setDefaults(Notification.DEFAULT_VIBRATE)
is this the best way?
According to Notifications, you are required to set a vibrate or ringtone to make Heads-up work. However, here's a quick hack that doesn't require VIBRATE permission to produce a head-up notification:
notificationBuilder.setPriority(Notification.PRIORITY_HIGH);
if (Build.VERSION.SDK_INT >= 21) notificationBuilder.setVibrate(new long[0]);
EDIT:
Don't abuse heads-up notification. See here for when to use heads-up notification:
MAX: For critical and urgent notifications that alert the user to a condition that is time-critical or needs to be resolved before they can continue with a particular task.
HIGH: Primarily for important communication, such as messages or chat events with content that is particularly interesting for the user. High-priority notifications trigger the heads-up notification display.
According to Google:
https://developer.android.com/design/patterns/notifications.html
If a notification's priority is flagged as High, Max, or full-screen, it gets a heads-up notification.
So the following code should generate an heads-up notification:
.setPriority(Notification.PRIORITY_MAX)
Should be enough. But apparently the .setDefaults(Notification.DEFAULT_VIBRATE) has to be set also. Hopefully Google will fix this in their final release of Android 5.0.
Not sure if bug or feature...
All my apps doesn´t show the Notification, for example i have a Nexus 6 with Android 5.1.1, but i think this is an issuse since Android 5.0, i had to set:
.setPriority(Notification.PRIORITY_HIGH)
Correctly set and manage notification priority
Android supports a priority flag for notifications. This flag allows you to influence where your notification appears, relative to other notifications, and helps ensure that users always see their most important notifications first. You can choose from the following priority levels when posting a notification:
MAX Use for critical and urgent notifications that alert the user to a condition that is time-critical or needs to be resolved before
they can continue with a particular task.
HIGH Use primarily for important communication, such as message or chat events with content that is particularly interesting for the
user. High-priority notifications trigger the heads-up notification
display.
DEFAULT Use for all notifications that don't fall into any of the other priorities described here and if the application does not
prioritize its own notifications
LOW Use for notifications that you want the user to be informed about, but that are less urgent. Low-priority notifications tend to
show up at the bottom of the list, which makes them a good choice for
things like public or undirected social updates: The user has asked to
be notified about them, but these notifications should never take
precedence over urgent or direct communication.
MIN Use for contextual or background information such as weather information or contextual location information. Minimum-priority
notifications do not appear in the status bar. The user discovers them
on expanding the notification shade.
To set the priority, use the setPriority function (introduced in API 16) alongwith setDefaults (added in API 11) of Notification Builder. Choose the priority DEFAULT, HIGH, LOW, MAX, MIN as per the requirement of your app. Defaults can also be chosen here.
A small snippet:
notification = NotificationBuilder(service)
notification.setPriority(Notification.PRIORITY_MAX)
notification.setDefaults(Notification.DEFAULT_ALL)
Please check that your phone is not in “silent” or “do not disturb” mode. I spent day before I found it. I just leave this comment for those who get the same problem and found this question.
Should set high priority and use ringtones or vibrations.
notificationBuilder.setDefaults(Notification.DEFAULT_ALL);
notificationBuilder.setPriority(Notification.PRIORITY_HIGH);
Ref: https://developer.android.com/guide/topics/ui/notifiers/notifications.html#Heads-up
Heads-up Notifications
With Android 5.0 (API level 21), notifications can appear in a small
floating window (also called a heads-up notification) when the device
is active (that is, the device is unlocked and its screen is on).
These notifications appear similar to the compact form of your
notification, except that the heads-up notification also shows action
buttons. Users can act on, or dismiss, a heads-up notification without
leaving the current app.
Examples of conditions that may trigger heads-up notifications
include:
The user's activity is in fullscreen mode (the app uses fullScreenIntent), or
The notification has high priority and uses ringtones or vibrations
For devices running Android 8.0 (API level 26) and higher the notification channel requires high importance
new NotificationChannel("ID", "Channel Name", NotificationManager.IMPORTANCE_HIGH);
Add this line in your code to display heads up notification it's only working for Lollipop version
notificationBuilder.setPriority(Notification.PRIORITY_HIGH);
You don't need to set vibrate. You only need to set sound. It's less intrusive. I don't get any sound on mine, but the notification displays on top. Make sure you use PRIORITY_HIGH and DEFAULT_SOUND.
NotificationChannel channel = null;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
channel = new NotificationChannel("my_channel_01",
"Channel human readable title",
NotificationManager.IMPORTANCE_HIGH);
mNotificationManager.createNotificationChannel(channel);
}
Notification notification =
new NotificationCompat.Builder(this, "notify_001")
.setSmallIcon(R.drawable.ic_check)
.setContentTitle("My notification")
.setContentText("Hello World!")
.setPriority(Notification.PRIORITY_HIGH)
.setDefaults(NotificationCompat.DEFAULT_SOUND)
.setChannelId("my_channel_01").build();
mNotificationManager = (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
mNotificationManager.notify(0, notification);