Notification actions
Although it's not required, every notification should open an appropriate app activity when tapped. In addition to this default notification action, you can add action buttons that complete an app-related task from the notification (often without opening an activity), as shown in figure 9.
Starting in Android 7.0 (API level 24), you can also add an action to reply to messages or enter other text directly from the notification.
Starting in Android 10 (API level 29), the platform can automatically generate action buttons with suggested intent-based actions.
Notification actions
Although it's not required, every notification should open an appropriate app activity when tapped. In addition to this default notification action, you can add action buttons that complete an app-related task from the notification (often without opening an activity), as shown in figure 9.
Starting in Android 7.0 (API level 24), you can also add an action to reply to messages or enter other text directly from the notification.
Starting in Android 10 (API level 29), the platform can automatically generate action buttons with suggested intent-based actions.
Adding action buttons is explained further in Create a Notification.
https://developer.android.com/training/notify-user/build-notification
https://developer.android.com/training/notify-user/build-notification#reply-action