NotificationManagerCompat

public static final String ACTION_BIND_SIDE_CHANNEL = "android.support.BIND_NOTIFICATION_SIDE_CHANNEL"

Intent action to register for on a service to receive side channel notifications. The listening service must be in the same package as an enabled NotificationListenerService.

public static final String EXTRA_USE_SIDE_CHANNEL = "android.support.useSideChannel"

Notification extras key: if set to true, the posted notification should use the side channel for delivery instead of using notification manager.

public static final int IMPORTANCE_DEFAULT = 3

Default notification importance: shows everywhere, allowed to makes noise, but does not visually intrude.

public static final int IMPORTANCE_HIGH = 4

Higher notification importance: shows everywhere, allowed to makes noise and peek.

public static final int IMPORTANCE_LOW = 2

Low notification importance: shows everywhere, but is not intrusive.

public static final int IMPORTANCE_MAX = 5

Highest notification importance: shows everywhere, allowed to makes noise, peek, and use full screen intents.

public static final int IMPORTANCE_MIN = 1

Min notification importance: only shows in the shade, below the fold.

public static final int IMPORTANCE_NONE = 0

A notification with no importance: shows nowhere, is blocked.

public static final int IMPORTANCE_UNSPECIFIED = -1000

Value signifying that the user has not expressed an importance. This value is for persisting preferences, and should never be associated with an actual notification.

public static final int INTERRUPTION_FILTER_ALARMS = 4

Interruption filter constant - Alarms only interruption filter - all notifications except those of category CATEGORY_ALARM are suppressed. Some audio streams are muted.

public static final int INTERRUPTION_FILTER_ALL = 1

Interruption filter constant - Normal interruption filter - no notifications are suppressed.

public static final int INTERRUPTION_FILTER_NONE = 3

Interruption filter constant - No interruptions filter - all notifications are suppressed and all audio streams (except those used for phone calls) and vibrations are muted.

public static final int INTERRUPTION_FILTER_PRIORITY = 2

Interruption filter constant - Priority interruption filter - all notifications are suppressed except those that match the priority criteria. Some audio streams are muted. See priorityCallSenders, priorityCategories, priorityMessageSenders to define or query this criteria. Users can additionally specify packages that can bypass this interruption filter.

public static final int INTERRUPTION_FILTER_UNKNOWN = 0

Interruption filter constant - returned when the value is unavailable for any reason.

public boolean areNotificationsEnabled()

Returns whether notifications from the calling package are not blocked.

public boolean canPostPromotedNotifications()

Returns whether the calling app's properly formatted notifications can appear in a promoted format, which may result in higher ranking, appearances on additional surfaces, and richer presentation. Apps can request this permission by sending the user to the activity that matches the system intent action ACTION_APP_NOTIFICATION_PROMOTION_SETTINGS.

public boolean canUseFullScreenIntent()

Returns whether the calling app can send fullscreen intents.

Fullscreen intents were introduced in Android HONEYCOMB, where apps could always attach a full screen intent to their notification via setFullScreenIntent}.

Android Q introduced the USE_FULL_SCREEN_INTENT permission, where SystemUI will only show the full screen intent attached to a notification if the permission is declared in the manifest.

Starting from Android UPSIDE_DOWN_CAKE, apps may not have permission to use USE_FULL_SCREEN_INTENT. If the FSI permission is denied, SystemUI will show the notification as an expanded heads up notification on lockscreen.

To request access, add the USE_FULL_SCREEN_INTENT permission to your manifest, and use ACTION_MANAGE_APP_USE_FULL_SCREEN_INTENT to send the user to the settings page where they can grant your app the FSI permission.

public void cancel(int id)

Cancel a previously shown notification.

public void cancel(@Nullable String tag, int id)

Cancel a previously shown notification.

public void cancelAll()

Cancel all previously shown notifications.

public void createNotificationChannel(@NonNull NotificationChannel channel)

Creates a notification channel that notifications can be posted to. This can also be used to restore a deleted channel and to update an existing channel's name, description, group, and/or importance.

The importance of an existing channel will only be changed if the new importance is lower than the current value and the user has not altered any settings on this channel.

The group of an existing channel will only be changed if the channel does not already belong to a group. All other fields are ignored for channels that already exist. It doesn't do anything on older SDKs which don't support Notification Channels.

public void createNotificationChannel(@NonNull NotificationChannelCompat channel)

Creates a notification channel that notifications can be posted to. This can also be used to restore a deleted channel and to update an existing channel's name, description, group, and/or importance.

The importance of an existing channel will only be changed if the new importance is lower than the current value and the user has not altered any settings on this channel.

The group of an existing channel will only be changed if the channel does not already belong to a group. All other fields are ignored for channels that already exist. It doesn't do anything on older SDKs which don't support Notification Channels.

public void createNotificationChannelGroup(@NonNull NotificationChannelGroup group)

Creates a group container for NotificationChannel objects. This can be used to rename an existing group. It doesn't do anything on older SDKs which don't support Notification Channels.