When you called notify on the notification manager you gave it an id – that is the unique id you can use to access it later (this is from the notification manager: notify(int id, Notification notification) To cancel, you would call: cancel(int id) with the same id. So, basically, you need to keep track of … Read more
It is mentioned in the documentation that the builder method NotificationCompat.Builder(Context context) has been deprecated. And we have to use the constructor which has the channelId parameter: NotificationCompat.Builder(Context context, String channelId) NotificationCompat.Builder Documentation: This constructor was deprecated in API level 26.0.0-beta1. use NotificationCompat.Builder(Context, String) instead. All posted Notifications must specify a NotificationChannel Id. Notification.Builder Documentation: … Read more
In Android O it’s a must to use a channel with your Notification Builder below is a sample code : // Sets an ID for the notification, so it can be updated. int notifyID = 1; String CHANNEL_ID = “my_channel_01”;// The id of the channel. CharSequence name = getString(R.string.channel_name);// The user-visible name of the channel. … Read more
The accepted answer is not (entirely) correct. Sure, it makes notification icons show in color, but does so with a BIG drawback – by setting the target SDK to lower than Android Lollipop! If you solve your white icon problem by setting your target SDK to 20, as suggested, your app will not target Android … Read more
After some tinkering for a while with different solutions i found out that one must create a notification channel in Android 8.1 and above. private fun startForeground() { val channelId = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { createNotificationChannel(“my_service”, “My Background Service”) } else { // If earlier version channel ID is not used // https://developer.android.com/reference/android/support/v4/app/NotificationCompat.Builder.html#NotificationCompat.Builder(android.content.Context) “” … Read more