I am trying to start a foreground service. I get notified that the service does start but the notification always gets suppressed. I double checked that the app is allowed to show notifications in the app info on my device. Here is my code:
private void showNotification() {
Intent notificationIntent = new Intent(this, MainActivity.class);
notificationIntent.setAction(Constants.ACTION.MAIN_ACTION);
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
| Intent.FLAG_ACTIVITY_CLEAR_TASK);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,
notificationIntent, 0);
Bitmap icon = BitmapFactory.decodeResource(getResources(),
R.mipmap.ic_launcher);
Notification notification = new NotificationCompat.Builder(getApplicationContext())
.setContentTitle("Revel Is Running")
.setTicker("Revel Is Running")
.setContentText("Click to stop")
.setSmallIcon(R.mipmap.ic_launcher)
//.setLargeIcon(Bitmap.createScaledBitmap(icon, 128, 128, false))
.setContentIntent(pendingIntent)
.setOngoing(true).build();
startForeground(Constants.FOREGROUND_SERVICE,
notification);
Log.e(TAG,"notification shown");
}
Here is the only error I see in relation:
06-20 12:26:43.635 895-930/? E/NotificationService: Suppressing notification from the package by user request.
It's because of Android O bg services restrictions.
So now you need to call startForeground() only for services that were started with startForegroundService() and call it in first 5 seconds after service has been started.
Here is the guide - https://developer.android.com/about/versions/oreo/background#services
Like this:
//Start service:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
startForegroundService(new Intent(this, YourService.class));
} else {
startService(new Intent(this, YourService.class));
}
Then create and show notification (with channel as supposed earlier):
private void createAndShowForegroundNotification(Service yourService, int notificationId) {
final NotificationCompat.Builder builder = getNotificationBuilder(yourService,
"com.example.your_app.notification.CHANNEL_ID_FOREGROUND", // Channel id
NotificationManagerCompat.IMPORTANCE_LOW); //Low importance prevent visual appearance for this notification channel on top
builder.setOngoing(true)
.setSmallIcon(R.drawable.small_icon)
.setContentTitle(yourService.getString(R.string.title))
.setContentText(yourService.getString(R.string.content));
Notification notification = builder.build();
yourService.startForeground(notificationId, notification);
if (notificationId != lastShownNotificationId) {
// Cancel previous notification
final NotificationManager nm = (NotificationManager) yourService.getSystemService(Activity.NOTIFICATION_SERVICE);
nm.cancel(lastShownNotificationId);
}
lastShownNotificationId = notificationId;
}
public static NotificationCompat.Builder getNotificationBuilder(Context context, String channelId, int importance) {
NotificationCompat.Builder builder;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
prepareChannel(context, channelId, importance);
builder = new NotificationCompat.Builder(context, channelId);
} else {
builder = new NotificationCompat.Builder(context);
}
return builder;
}
#TargetApi(26)
private static void prepareChannel(Context context, String id, int importance) {
final String appName = context.getString(R.string.app_name);
String description = context.getString(R.string.notifications_channel_description);
final NotificationManager nm = (NotificationManager) context.getSystemService(Activity.NOTIFICATION_SERVICE);
if(nm != null) {
NotificationChannel nChannel = nm.getNotificationChannel(id);
if (nChannel == null) {
nChannel = new NotificationChannel(id, appName, importance);
nChannel.setDescription(description);
nm.createNotificationChannel(nChannel);
}
}
}
Remember that your foreground notification will have the same state as your other notifications even if you'll use different channel ids, so it might be hidden as a group with others. Use different groups to avoid it.
The problem was i am using Android O and it requires more information. Here is the successful code for android O.
mNotifyManager = (NotificationManager) mActivity.getSystemService(Context.NOTIFICATION_SERVICE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) createChannel(mNotifyManager);
mBuilder = new NotificationCompat.Builder(mActivity, "YOUR_TEXT_HERE").setSmallIcon(android.R.drawable.stat_sys_download).setColor
(ContextCompat.getColor(mActivity, R.color.colorNotification)).setContentTitle(YOUR_TITLE_HERE).setContentText(YOUR_DESCRIPTION_HERE);
mNotifyManager.notify(mFile.getId().hashCode(), mBuilder.build());
#TargetApi(26)
private void createChannel(NotificationManager notificationManager) {
String name = "FileDownload";
String description = "Notifications for download status";
int importance = NotificationManager.IMPORTANCE_DEFAULT;
NotificationChannel mChannel = new NotificationChannel(name, name, importance);
mChannel.setDescription(description);
mChannel.enableLights(true);
mChannel.setLightColor(Color.BLUE);
notificationManager.createNotificationChannel(mChannel);
}
For me everything was set correctly (also added FOREGROUND_SERVICE permission to manifest),
but I just needed to uninstall the app and reinstall it.
If none of the above worked you should check if your notification id is 0 ...
SURPRISE!! it cannot be 0.
Many thanks to #Luka Kama for this post
startForeground(0, notification); // Doesn't work...
startForeground(1, notification); // Works!!!
if you are targeting Android 9(Pie) api level 28 and higher than you should give FOREGROUND_SERVICE permission in manifest file.see this link : https://developer.android.com/about/versions/pie/android-9.0-migration#bfa
I can not believe it. In my case, after adding 'android:name=".App"' to AndroidManifest.xml, the notification started showing.
Example:
<application
android:name=".App"
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
For Android API level 33+ you need to request POST_NOTIFICATIONS runtime permission. Although this doesn't prevent the foreground service from running, it's still mandatory to notify as we did for < API 33:
Note: Apps don't need to request the POST_NOTIFICATIONS permission in order to launch a foreground service. However, apps must include a notification when they start a foreground service, just as they do on previous versions of Android.
See more in Android Documentation.
In my case, it was caused by me using IntentService.
In short, if you want a foreground service then subclass Service.
Related
Foreground service notification shows too slowly on Android 12. Used ContextCompat.startForegroundService(...) and mContext.startForegroundService(...). It still shows in 5-10 seconds.
Here is an example of my code:
private void createNotificationChannel() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel channel = new NotificationChannel(CHANNEL_ID, "Counting steps", NotificationManager.IMPORTANCE_DEFAULT);
channel.enableVibration(false);
channel.setSound(null, null);
channel.setShowBadge(false);
notificationManager.createNotificationChannel(channel);
}
}
The onStartCommand method:
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
String input = intent.getStringExtra("numberOfSteps");
createNotificationChannel();
Intent notificationIntent = new Intent(this, MainActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this,
0, notificationIntent, PendingIntent.FLAG_IMMUTABLE);
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
Notification.Builder notificationBuilder = new Notification.Builder(this, CHANNEL_ID)
.setContentTitle("Counting steps")
.setContentText(input)
.setSmallIcon(R.drawable.ic_baseline_directions_walk_24)
.setContentIntent(pendingIntent);
startForeground(FOREGROUND_ID, notificationBuilder.build());
}
return START_STICKY;
}
How can I start or show a foreground service notification quickly?
Services that show a notification immediately
If a foreground service has at least one of the following
characteristics, the system shows the associated notification
immediately after the service starts, even on devices that run Android
12 or higher:
The service is associated with a notification that includes action
buttons. The service has a foregroundServiceType of
mediaPlayback, mediaProjection, or phoneCall. The service
provides a use case related to phone calls, navigation, or media
playback, as defined in the notification's category
attribute. The service has opted out of the behavior
change by passing FOREGROUND_SERVICE_IMMEDIATE into
setForegroundServiceBehavior() when setting up the
notification.
On Android 13 (API level 33) or higher, if the user denies the
notification permission, they still see notices related to foreground
services in the Foreground Services (FGS) Task Manager but don't see
them in the notification drawer.
See: Services that show a notification immediately
Java example code:
Notification.Builder notificationBuilder = new Notification.Builder(this, CHANNEL_ID)
.setContentTitle("Counting steps")
.setContentText(message)
.setSmallIcon(R.drawable.your_cool_icon)
.setContentIntent(pendingIntent);
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.S) {
notificationBuilder.setForegroundServiceBehavior(Notification.FOREGROUND_SERVICE_IMMEDIATE);
}
Kotlin example:
val notificationBuilder: Notification.Builder =
Notification.Builder(this, CHANNEL_ID)
.setContentTitle("Notification title")
.setContentText("Content title")
.setSmallIcon(R.drawable.your_cool_icon)
.setContentIntent(pendingIntent)
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
notificationBuilder.setForegroundServiceBehavior(Notification.FOREGROUND_SERVICE_IMMEDIATE)
}
I have a problem with notifications where the notification doesn't appear on my xiaomi and samsung devices but works for the other device. I've tried what people recommend like trying auto start, managing battery settings, but it still doesn't appear on both devices. I also tried to use the notify library but the results were the same. Strangely, when I checked the notification setting and then clicked on the application, it appeared as shown below
samsung
This is my notification code :
public void showNotification() {
String appname = "App Name";
String title = "Notification Title";
String text = "This is the notification text";
String iconUrl = "http://url.to.image.com/image.png";
NotificationManager notifyManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
TaskStackBuilder stackBuilder = TaskStackBuilder.from(MainActivity.this);
stackBuilder.addParentStack(NewsActivity.class);
stackBuilder.addNextIntent(new Intent(MainActivity.this, NewsActivity.class));
PendingIntent pendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
NotificationCompat.Builder builder = new NotificationCompat.Builder(MainActivity.this);
builder.setContentTitle(title).setContentInfo(appname).setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.logo_wanda_flp)).setContentText(text).setContentIntent(pendingIntent);
builder.setSmallIcon(R.drawable.logo_wanda_flp);
notifyManager.notify("textid", 123, builder.getNotification());
}
The code won't work on Android 8 (API 26) and above without first registering a notification channel. On Android before that, it will work just fine.
Some of the code snippets below are taken from here.
Creating a notification channel
Register notification channels inside your activity before attempting to show any notification. Alternatively, you can register them inside a custom Application class before any activities or services start (but this won't be shown here for the sake of simplicity).
#Override
public void onCreate(Bundle savedInstanceState) {
createNotificationChannel(); // Registering a notification channel
super.onCreate(savedInstanceState);
setContentView(R.layout.main_activity);
}
private void createNotificationChannel() {
// Create the NotificationChannel, but only on API 26+ because
// the NotificationChannel class is new and not in the support library
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
CharSequence name = getString(R.string.channel_name);
String description = getString(R.string.channel_description);
int importance = NotificationManager.IMPORTANCE_DEFAULT;
NotificationChannel channel = new NotificationChannel(CHANNEL_ID, name, importance);
channel.setDescription(description);
// Register the channel with the system; you can't change the importance
// or other notification behaviors after this
NotificationManager notificationManager = getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(channel);
}
}
Deliver the notification
public void showNotification() {
// ...
// NotificationCompat.Builder builder = new NotificationCompat.Builder(MainActivity.this);
// Replace with line below.
NotificationCompat.Builder builder = new NotificationCompat.Builder(MainActivity.this, CHANNEL_ID);
// ...
}
In my app it is important to display a notification at a certain point in time (as alarm for Accident detection if the user does not move anymore).
This alarm is working on all Android versions < 10 and is also working with the most Phones with android 10. One of the exceptions seams to be the Samsung S10 (Plus). With this Phone all notifications are for 1-2 minutes delayed if the Phone is in Sleep-Mode (Display is black)!
Here some code snippets to show the Problem.
First we tried to do it with an JobIntentService:
public class MyNotificationService extends JobIntentService {
....
#Override
protected void onHandleWork(#NonNull Intent intent) {
NotificationType notificationType = NotificationType.valueOf(intent.getExtras().getInt(INTENT_EXTRA_NOTIFICATION_TYPE));
boolean alarmingNotification = intent.getBooleanExtra(INTENT_EXTRA_NOTIFICATION_TYPE_ALARM, false);
NotificationStorage notificationStorage = NotificationStorage.getInstance(context);
notificationStorage.setPendingNotificationType(notificationType);
intent.putExtra(INTENT_EXTRA_ALARM_NOTIFICATION, alarmingNotification);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
intent.setClass(context, PopupOnLockScreenActivity.class);
startActivity(notificationStarterIntent)
}
...
}
Result: Popup does not open immediately as expected (1-2 minutes delayed)
Then i tried as workaround with Notification with a NotificationChannel (IMPORTANCE_HIGH) and NotificationCompat.Builder (PRIORITY_MAX):
public class MyNotificationService extends JobIntentService {
....
#Override
protected void onHandleWork(#NonNull Intent intent) {
NotificationType notificationType = NotificationType.valueOf(intent.getExtras().getInt(INTENT_EXTRA_NOTIFICATION_TYPE));
boolean alarmingNotification = intent.getBooleanExtra(INTENT_EXTRA_NOTIFICATION_TYPE_ALARM, false);
NotificationStorage notificationStorage = NotificationStorage.getInstance(context);
notificationStorage.setPendingNotificationType(notificationType);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
Log.d(TAG, "showPopupOnLockScreen XXX");
String channelName = getResources().getString(R.string.safety_notification_channel_name);
//String description = getString(R.string.channel_description);
String description = "XXXXX";
int importance = NotificationManager.IMPORTANCE_HIGH;
android.app.NotificationChannel channel = new android.app.NotificationChannel(UepaaNetAndroidConstants.ANDROID_NOTIFICATION_CHANNEL_ID, channelName, importance);
channel.setDescription(description);
// Register the channel with the system; you can't change the importance
// or other notification behaviors after this
android.app.NotificationManager notificationManager = getSystemService(android.app.NotificationManager.class);
notificationManager.createNotificationChannel(channel);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, channel.getId())
.setSmallIcon(R.drawable.notification_symptom_small)
.setContentTitle("My notification")
.setContentText("Hello World!")
.setPriority(NotificationCompat.PRIORITY_MAX)
.setContentIntent(pendingIntent)
.setAutoCancel(true);
notificationManager.notify(123, builder.build());
}
}
...
}
Result: Notification will be not showed immediately as expected (1-2 minutes delayed)
Wake-Up does not work on Samsung S10
I also tried to put the app in the lists to prevent the app from Battery-Manager and Sleep-Modes. (https://www.youtube.com/watch?v=npGw_r-v25k) But the problem still exists!
Can somebody help me? Our app is useless without notifications.
To reproduce this problem I pushed a project on github: https://github.com/gatschet/androidAlarmTest.git
I submitted my app at the end of 2017 in the play store and it worked.
Then it was built in Eclipse.
Now I run it in Android Studio and the same code doesn't show any notification.
It is a permanent notification which is present after I call the app's finish() method. (why I do this: see at the bottom if you want to know).
So I looked at all the examples and NONE of the work. No single notification is shown.
So I start an activity and in the activity I show the notification. Then I call finish().
This is my code:
Intent intent = new Intent(this, MainActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,
intent, 0);
CharSequence connectedPart = getResources().getString(R.string.app_name);
String melding = "";
melding = getResources().getString(R.string.screentimeoutsetto) + " " + newTimeString + ".";
NotificationManager notificationManager = (NotificationManager) this
.getSystemService(Context.NOTIFICATION_SERVICE);
Notification notification = new Notification.Builder(this)
.setContentTitle(connectedPart)
.setTicker(connectedPart)
.setContentText(melding)
.setSmallIcon(R.drawable.ic_stat_name)
.setContentIntent(pendingIntent)
.setOngoing(true)
.build();
notification.flags |= Notification.FLAG_ONGOING_EVENT;
notification.flags |= Notification.FLAG_NO_CLEAR;
notificationManager.notify(2, notification);
dependencies:
dependencies{
implementation "com.android.support:support-compat:26.1.0"
}
Why I do this:
My app does 1 thing: toggle the screentimeout. So when you start it it sets the screentimeout to 30 minutes (starts, sets a notification, then finish()). Start again, it removes the notification and restore the original value for the screen timeout.
Starting with Android Oreo, all notifications require a notification channel, otherwise the notification wont post and an error will appear in your logcat. Here's an example of how you can do it, lifted from one of my apps:
private static void createNotificationChannel(Context ctx) {
if(SDK_INT < O) return;
final NotificationManager mgr = ctx.getSystemService(NotificationManager.class);
if(mgr == null) return;
final String name = ctx.getString(R.string.channel_name);
if(mgr.getNotificationChannel(name) == null) {
final NotificationChannel channel =
new NotificationChannel(CHANNEL_ID, name, IMPORTANCE_DEFAULT);
mgr.createNotificationChannel(channel);
}
}
//Usage...
createNotificationChannel(context);
NotificationCompat.Builder builder = new NotificationCompat.Builder(context, CHANNEL_ID);
builder.setSmallIcon(R.drawable.ic_alarm_white_24dp);
//etc...
manager.notify(id, builder.build());
Now from Android 8.0 and onward you need to create notification channel before showing notifications. Here is the Docs link
https://developer.android.com/training/notify-user/channels
I was trying to implement a feature where user can set a reminder that will be delivered with a local push notification.
I am using AlarmManager to throw a broadcast when the time is up.
Then in the broadcast receiver, I am posting a local notification and then starting a foreground service which starts an activity so I can wake the device and turn on the screen.
If I do nothing after posting the notification (simply return and not starting foreground service) I can get the device to show the notification with no problem.
However, if I start the service right after posting the notification, all I get is some vibration but I don't see the notification anywhere.
Even stranger, from the notification manager, it says there is 1 notification from getActiveNotifications() although there is nothing.
Receiver:
#Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
if (!action.equals(context.getString(R.string.reminder_action_string))) {
// fail safe check
return;
}
// create the channel for android 8
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel channel = new NotificationChannel(
CHANNEL_ID,
context.getString(R.string.reminder_notification_channel),
NotificationManager.IMPORTANCE_HIGH);
channel.setDescription(context.getString(R.string.reminder_notification_channel_desc));
final AudioAttributes attributes = new AudioAttributes.Builder()
.setUsage(AudioAttributes.USAGE_NOTIFICATION)
.setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
.build();
channel.setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION), attributes);
NotificationManager notificationManager = context.getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(channel);
}
NotificationCompat.Builder builder = new NotificationCompat.Builder(context, ReceiverReminder.CHANNEL_ID)
.setChannelId(ReceiverReminder.CHANNEL_ID)
.setContentTitle(context.getString(R.string.reminder_title))
.setContentText(intent.getStringExtra(ActivityReminderCreate.TEXT_STRING))
.setSmallIcon(R.drawable.ic_mic)
.setStyle(new NotificationCompat.BigTextStyle()
.bigText(intent.getStringExtra(ActivityReminderCreate.TEXT_STRING)))
.setPriority(NotificationCompat.PRIORITY_MAX)
.setCategory(NotificationCompat.CATEGORY_ALARM)
.setVisibility(NotificationCompat.VISIBILITY_SECRET)
.setContentIntent(PendingIntent.getActivity(context, 0, new Intent(context, ActivityReminderList.class).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK), PendingIntent.FLAG_ONE_SHOT))
.setAutoCancel(true);
NotificationManagerCompat manager = NotificationManagerCompat.from(context);
Notification notification = builder.build();
final int id = mSecureRandom.nextInt();
manager.notify(id, notification);
Intent serviceIntent = new Intent(context, ServiceReminder.class);
serviceIntent.putExtras(intent);
serviceIntent.putExtra(KEY_ID, id);
serviceIntent.putExtra(KEY_NOTIFICATION, notification);
ContextCompat.startForegroundService(context, serviceIntent);
}
IntentService:
#Override
protected void onHandleIntent(#Nullable Intent intent) {
// construct notification object
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
// start self in foreground
NotificationManager manager = getSystemService(NotificationManager.class);
Log.e(TAG, "notification count: " + manager.getActiveNotifications().length);
Notification notification = intent.getExtras().getParcelable(ReceiverReminder.KEY_NOTIFICATION);
int id = intent.getExtras().getInt(ReceiverReminder.KEY_ID);
startForeground(id, notification);
Log.e(TAG, "notification count: " + manager.getActiveNotifications().length);
}
// start an activity so device can be waken up
Intent activityIntent = new Intent(ServiceReminder.this, ActivityReminderList.class);
activityIntent.putExtra(ActivityReminderList.KEY_FROM_SERVICE, true);
startActivity(activityIntent);
}
I figured out why...
I used an IntentService which kills itself when its current job is done.
And in the case of a foreground service, the associated notification is dismissed when the service is stopped.
I've switched to using a Service instead, and the notification would stay there.