We have code similar to the following in our app
val pendingIntent = PendingIntent.getActivity(ctx, id.toInt(), intent, PendingIntent.FLAG_CANCEL_CURRENT) val builder = NotificationCompat.Builder(ctx, Channel.TEST_CHANNEL.channelId) builder.setTicker(tickerText) .setContentTitle(contentTitle) .setContentText(contentText) .setVibrate(vibrate) .setSmallIcon(icon) .setAutoCancel(true) .setLights(-0xff0100, 300, 1000) .setSound(uri) .setContentIntent(pendingIntent) .setStyle(NotificationCompat.BigTextStyle().bigText(contentText)) .addAction(R.drawable.ic_notification, ctx.getString(R.string.notification), piAction) val notification = builder.build() val nf = ctx.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager nf.notify(NOTIFICATION_TAG, id.toInt(), notification) } Starting recently we noticed that notifications on some device running Android 8+ started disappearing briefly after being shown, without user's interaction. Setting auto-cancel to false helps, but the user experience degrades.
The id is a unique item id from the database. This may be important thing to note - technically we can have a notification with such id be shown, removed/canceleld by user, and later some time used again for a similar notification with the same id. Can this be the reason?
4 Answers
Answers 1
Only thing I found uncertain is NotificationCompat.Builder
Android oreo now uses Notification.Builder instead of NotificationCompat.Builder.
Might be you have to check android version like:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { //Use Notification.Builder } else { // Use NotificationCompat.Builder. } I don't think unique id will be an issue for disappearing notification.
Google has created open source sample for this new changes. Please refer to it for more info.
https://github.com/googlesamples/android-NotificationChannels
Answers 2
We've updated the support libs and tried the following method on builder for luck:
builder.setTicker(tickerText) ... .setTimeoutAfter(-1) ... Setting this param to a positive value delayed the notification disappearing by that amount of time (so it did affect). Thus we tried a negative number, the notifications seem to stay there now.
I couldn't find any reasonable documentation explaining this, so this answer is not 100%, but keeping it here for now for others to try and see if it helps them.
Answers 3
For the newest version of Android you have to validate which version are you using:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { //Use Notification.Builder Notification notification = new Notification.Builder(Main.this) /* Make app open when you click on the notification. */ .setContentIntent(PendingIntent.getActivity( Main.this, Main.this.i, new Intent(Main.this, Main.class), PendingIntent.FLAG_CANCEL_CURRENT)) .setContentTitle(contentTitle) .setAutoCancel(true) .setContentText(contentText) .setSmallIcon(icon)drawn white. //.setColor(Color.RED) .build(); final NotificationManager notificationManager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE); notificationManager.notify(Main.this.i, notification); } else { // Use NotificationCompat.Builder. val pendingIntent = PendingIntent.getActivity(ctx, id.toInt(), intent, PendingIntent.FLAG_CANCEL_CURRENT) val builder = NotificationCompat.Builder(ctx, Channel.TEST_CHANNEL.channelId) builder.setTicker(tickerText) .setContentTitle(contentTitle) .setContentText(contentText) .setVibrate(vibrate) .setSmallIcon(icon) .setAutoCancel(true) .setLights(-0xff0100, 300, 1000) .setSound(uri) .setContentIntent(pendingIntent) .setStyle(NotificationCompat.BigTextStyle().bigText(contentText)) .addAction(R.drawable.ic_notification, ctx.getString(R.string.notification), piAction) val notification = builder.build() val nf = ctx.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager nf.notify(NOTIFICATION_TAG, id.toInt(), notification) } You can try replacing your code for that one.
Explanation:
NotificationCompat.Builder This constructor was deprecated in API level 26.1.0. use NotificationCompat.Builder(Context, String) instead. All posted Notifications must specify a NotificationChannel Id.
Notification.Builder your app supports versions of Android as old as API level 4, you can instead use NotificationCompat.Builder, available in the Android Support library.
Answers 4
.setAutoCancel(false)
May be it will work for you.
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