Android App Notification Permission. While contacts/locations are the dangerous permissions because you are accessing user data. Android allows to put notification into the titlebar of your application.
If an app wanted to access your calendar, camera, and other functionalities, the user needed to grant the permission. You can allow some apps to use various features on your phone, such as your camera or contacts list. While contacts/locations are the dangerous permissions because you are accessing user data.
The user can expand the notification bar and by selecting the notification the user can trigger another activity.
With the latest google play services update, you may have noticed a new settings screen that has controls for public health app(s) you may choose to download from the play store that uses exposure notifications. An app will send a notification to ask for permission to use features on your phone, which you can allow or deny.you can also change permissions for a single app or by permission type in your phone's settings. Unfortunately, that’s not always true of system_alert_window. Choose any permission to see which apps are using it.