java.lang.Object | |
↳ | android.app.NotificationManager |
Class to notify the user of events that happen. This is how you tell the user that something has happened in the background.
Notifications can take different forms:
Each of the notify methods takes an int id parameter and optionally a
String
tag parameter, which may be null
. These parameters
are used to form a pair (tag, id), or (null
, id) if tag is
unspecified. This pair identifies this notification from your app to the
system, so that pair should be unique within your app. If you call one
of the notify methods with a (tag, id) pair that is currently active and
a new set of notification parameters, it will be updated. For example,
if you pass a new status bar icon, the old icon in the status bar will
be replaced with the new one. This is also the same tag and id you pass
to the cancel(int)
or cancel(String, int)
method to clear
this notification.
You do not instantiate this class directly; instead, retrieve it through
getSystemService(String)
.
For a guide to creating notifications, read the Status Bar Notifications developer guide.
Public Methods | |||||||||||
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Cancel a previously shown notification.
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Cancel a previously shown notification.
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Cancel all previously shown notifications.
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Post a notification to be shown in the status bar.
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Post a notification to be shown in the status bar.
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Inherited Methods | |||||||||||
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From class
java.lang.Object
|
Cancel a previously shown notification. If it's transient, the view will be hidden. If it's persistent, it will be removed from the status bar.
Cancel a previously shown notification. If it's transient, the view will be hidden. If it's persistent, it will be removed from the status bar.
Cancel all previously shown notifications. See cancel(int)
for the
detailed behavior.
Post a notification to be shown in the status bar. If a notification with the same id has already been posted by your application and has not yet been canceled, it will be replaced by the updated information.
id | An identifier for this notification unique within your application. |
---|---|
notification | A Notification object describing what to show the user. Must not
be null.
|
Post a notification to be shown in the status bar. If a notification with the same tag and id has already been posted by your application and has not yet been canceled, it will be replaced by the updated information.
tag | A string identifier for this notification. May be null . |
---|---|
id | An identifier for this notification. The pair (tag, id) must be unique within your application. |
notification | A Notification object describing what to
show the user. Must not be null.
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