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Simple example of heads-up notification in Android

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Beginning with Android 5.0, notifications can briefly appear in a floating window called a heads-up notification. This behavior is normally for important notifications that the user should know about immediately, and it appears only if the device is unlocked.

The heads-up notification appears the moment your app issues the notification and it disappears after a moment, but remains visible in the notification drawer as usual.

Example conditions that might trigger heads-up notifications include the following: The user's activity is in fullscreen mode (the app uses fullScreenIntent).The notification has high priority and uses ringtones or vibrations on devices running Android 7.1 (API level 25) and lower.The notification channel has high importance on devices running Android 8.0 (API level 26) and higher. Here is the sample code private fun sendNotification() { var notifyManager: NotificationManager? = null val NOTIFY_ID = 1002 val name = "KotlinApplication" …