blocks|key|1058829|text|因为还没有人发布代码来回答这个问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1058830|notification.flags+=+Notification.FLAG_AUTO_CANCEL;|code-block|syntax|javascript|1058831|。。如果你已经有了标志，你可以像这样进行OR+FLAG_AUTO_CANCEL：|1058832|notification.flags+=+Notification.FLAG_INSISTENT+%7C+Notification.FLAG_AUTO_CANCEL;|1058833|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Since no one has posted a code answer to this:

<pre><code>notification.flags = Notification.FLAG_AUTO_CANCEL;
</code></pre>

.. and if you already have flags, you can OR FLAG_AUTO_CANCEL like this:

<pre><code>notification.flags = Notification.FLAG_INSISTENT | Notification.FLAG_AUTO_CANCEL;
</code></pre>

blocks|key|1058866|text|使用以下代码取消通知：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1058867|NotificationManager+notificationManager+=+(NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.cancel(NOTIFICATION_ID);|code-block|syntax|javascript|1058868|在这段代码中，总是有相同的id用于通知。如果您有需要取消的不同通知，则必须保存用于创建通知的ids。|1058869|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Use the following code to cancel a Notification: 

<pre><code>NotificationManager notificationManager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.cancel(NOTIFICATION_ID);
</code></pre>

In this code there is alway the same id used for notifications. If you have different notifications that need to be canceled you have to save the ids that you used to create the Notification.

blocks|key|1058880|text|++++//+Get+a+notification+builder+that's+compatible+with+platform+versions
++++//+>=+4
++++NotificationCompat.Builder+builder+=+new+NotificationCompat.Builder(
++++++++++++this);
++++builder.setSound(soundUri);
++++builder.setAutoCancel(true);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1058881|如果您使用的是通知构建器，则此方法有效...|unstyled|1058882|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code> // Get a notification builder that's compatible with platform versions
 // &gt;= 4
 NotificationCompat.Builder builder = new NotificationCompat.Builder(
 this);
 builder.setSound(soundUri);
 builder.setAutoCancel(true);
</code></pre>

this works if you are using a notification builder...

blocks|key|1058899|text|从API级别18+(Jellybean+MR2)开始，您可以通过NotificationListenerService取消您自己以外的通知。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1058900|@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR2)
public+class+MyNotificationListenerService+extends+NotificationListenerService+{...}|code-block|syntax|javascript|1058901|..。|1058902|private+void+clearNotificationExample(StatusBarNotification+sbn)+{
++++myNotificationListenerService.cancelNotification(sbn.getPackageName(),+sbn.getTag(),+sbn.getId());
}|1058903|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Starting with API level 18 (Jellybean MR2) you can cancel Notifications other than your own via NotificationListenerService.

<pre><code>@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR2)
public class MyNotificationListenerService extends NotificationListenerService {...}
</code></pre>

...

<pre><code>private void clearNotificationExample(StatusBarNotification sbn) {
 myNotificationListenerService.cancelNotification(sbn.getPackageName(), sbn.getTag(), sbn.getId());
}
</code></pre>

blocks|key|1273643|text|+++String+ns+=+Context.NOTIFICATION_SERVICE;
++NotificationManager+Nmang+=+(NotificationManager)+getApplicationContext()
+++++++++++++++++++++++++++++++++++++++++++++++++++++.getSystemService(ns);
++Nmang+.cancel(getIntent().getExtras().getInt("notificationID"));|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1273644|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code> String ns = Context.NOTIFICATION_SERVICE;
 NotificationManager Nmang = (NotificationManager) getApplicationContext()
 .getSystemService(ns);
 Nmang .cancel(getIntent().getExtras().getInt(&quot;notificationID&quot;));
</code></pre>

blocks|key|1273677|text|实际上，在开始使用API18级之前，你可以使用NotificationListenerService取消其他应用程序发布的通知，但这种方法在棒棒糖上不再起作用，以下是删除通知的方法，也涵盖Lillipop。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1273678|if+(Build.VERSION.SDK_INT+<+21)+{
++++cancelNotification(sbn.getPackageName(),+sbn.getTag(),+sbn.getId());
}
else+{
++++cancelNotification(sbn.getKey());
}|code-block|syntax|javascript|1273679|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Actually as answered before starting with API Level 18 you can cancel Notifications posted by other apps differet than your own using NotificationListenerService but that approach will no longer work on Lollipop, here is the way to remove notifications covering also Lillipop API.

<pre><code>if (Build.VERSION.SDK_INT &lt; 21) {
 cancelNotification(sbn.getPackageName(), sbn.getTag(), sbn.getId());
}
else {
 cancelNotification(sbn.getKey());
}
</code></pre>

blocks|key|1059001|text|如果要从在前台启动的服务生成通知，请使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1059002|startForeground(NOTIFICATION_ID,+notificationBuilder.build());|code-block|syntax|javascript|1059003|然后发出|1059004|notificationManager.cancel(NOTIFICATION_ID);|1059005|不会最终取消通知，通知仍会显示在状态栏中。在这种情况下，您需要发出|1059006|stopForeground(+true+);|1059007|从服务内部将其放回后台模式，并同时取消通知。或者，您可以将其推送到后台，而不是让它取消通知，然后再取消通知。|1059008|stopForeground(+false+);
notificationManager.cancel(NOTIFICATION_ID);|1059009|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|Y|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

If you are generating Notification from a Service that is started in the foreground using

<pre><code>startForeground(NOTIFICATION_ID, notificationBuilder.build());
</code></pre>

Then issuing

<pre><code>notificationManager.cancel(NOTIFICATION_ID);
</code></pre>

does not end up canceling the Notification, and the notification still appears in the status bar. In this particular case, you will need to issue

<pre><code>stopForeground( true );
</code></pre>

from within the service to put it back into background mode and to simultaneously cancel the notifications. Alternately, you can push it into the background without having it cancel the notification and then cancel the notification.

<pre><code>stopForeground( false );
notificationManager.cancel(NOTIFICATION_ID);
</code></pre>

blocks|key|1273768|text|请尝试NotificationManagerCompat中提供的方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1273769|要删除所有通知，|1273770|NotificationManagerCompat.from(context).cancelAll();|code-block|syntax|javascript|1273771|为了移除特定的通知，|1273772|NotificationManagerCompat.from(context).cancel(notificationId);|1273773|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.android.com/reference/androidx/core/app/NotificationManagerCompat#cancelAll())^0|3|P|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|6|7|10|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|11|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|12|8|@]|9|@]|C|$]]|$1|M|3|N|5|H|7|13|8|@]|9|@]|C|$I|J]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|C|$]]]|P|$Q|$5|R|S|T|C|$U|V]]]]

Please try methods provided in <a href="https://developer.android.com/reference/androidx/core/app/NotificationManagerCompat#cancelAll()" rel="noreferrer">NotificationManagerCompat</a>.
To remove all notifications,
<pre><code>NotificationManagerCompat.from(context).cancelAll();
</code></pre>
To remove a particular notification,
<pre><code>NotificationManagerCompat.from(context).cancel(notificationId);
</code></pre>

blocks|key|1059123|text|所有通知(甚至其他应用程序通知)都可以通过侦听NotificationListenerService+Implementation中提到的'NotificationListenerService‘来删除|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1059124|在服务中，您必须调用cancelAllNotifications()。|style|CODE|1059125|必须通过以下方式为您的应用程序启用该服务：|1059126|‘应用和通知’->‘特殊应用访问’->‘通知访问’。|1059127|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/17926236/notificationlistenerservice-implementation^0|N|16|0|0|A|O|0|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|D|3|E|5|6|7|X|8|@$A|Y|B|Z|F|G]]|9|@]|C|$]]|$1|H|3|I|5|6|7|10|8|@]|9|@]|C|$]]|$1|J|3|K|5|6|7|11|8|@]|9|@]|C|$]]|$1|L|3|-4|5|6|7|12|8|@]|9|@]|C|$]]]|M|$N|$5|O|P|Q|C|$R|S]]]]

All notifications (even other app notifications) can be removed via listening to 'NotificationListenerService' as mentioned in <a href="https://stackoverflow.com/questions/17926236/notificationlistenerservice-implementation">NotificationListenerService Implementation</a>

In the service you have to call <code>cancelAllNotifications()</code>.

The service has to be enabled for your application via:

‘Apps &amp; notifications’ -> ‘Special app access’ -> ‘Notifications access’.

blocks|key|1273869|text|这段代码对我来说很有效：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1273870|public+class+ExampleReceiver+extends+BroadcastReceiver+{
++@Override
++public+void+onReceive(Context+context,+Intent+intent)+{
++++NotificationManagerCompat+notificationManager+=+NotificationManagerCompat.from(context);

++++int+notificationId+=+1;
++++notificationManager.cancel(notificationId);
++}
}|code-block|syntax|javascript|1273871|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

this code worked for me:
<pre><code>public class ExampleReceiver extends BroadcastReceiver {
 @Override
 public void onReceive(Context context, Intent intent) {
 NotificationManagerCompat notificationManager = NotificationManagerCompat.from(context);

 int notificationId = 1;
 notificationManager.cancel(notificationId);
 }
}
</code></pre>

blocks|key|1273889|text|如果您使用OneSignal，则必须使用以下内容之一：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1273890|具体通知：|1273891|OneSignal.removeNotification(mutableNotification.androidNotificationId)|code-block|syntax|javascript|1273892|所有通知：|1273893|OneSignal.clearOneSignalNotifications()|1273894|在OneSignal的java文档中写道：|1273895|对于removeNotification|1273896|Cancels+a+single+OneSignal+notification+based+on+its+Android+notification+integer+ID.+Use
*+instead+of+Android's+{@link+NotificationManager#cancel(int)},+otherwise+the+notification+will+be+restored
*+when+your+app+is+restarted.|1273897|对于clearOneSignalNotifications|1273898|If+you+just+use
*+{@link+NotificationManager#cancelAll()},+OneSignal+notifications+will+be+restored+when
*+your+app+is+restarted.|1273899|entityMap^0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|10|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|11|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|12|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|13|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|14|8|@]|9|@]|A|$]]|$1|Q|3|R|5|F|7|15|8|@]|9|@]|A|$G|H]]|$1|S|3|T|5|6|7|16|8|@]|9|@]|A|$]]|$1|U|3|V|5|F|7|17|8|@]|9|@]|A|$G|H]]|$1|W|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|X|$]]

If you use OneSignal, you must use one of this:
Specific notification:
<pre><code>OneSignal.removeNotification(mutableNotification.androidNotificationId)
</code></pre>
All notifications:
<pre><code>OneSignal.clearOneSignalNotifications()
</code></pre>
In OneSignal's java doc says:
For removeNotification
<pre><code>Cancels a single OneSignal notification based on its Android notification integer ID. Use
* instead of Android's {@link NotificationManager#cancel(int)}, otherwise the notification will be restored
* when your app is restarted.
</code></pre>
For clearOneSignalNotifications
<pre><code>If you just use
* {@link NotificationManager#cancelAll()}, OneSignal notifications will be restored when
* your app is restarted.
</code></pre>

Is it possible to clear a notification programatically?

I tried it with the <code>NotificationManager</code> but its not working.
Is there any other way I can do it?

How to clear a notification in Android

Android

是否可以通过编程方式清除通知？我在NotificationManager上试过了，但不起作用。有没有其他方法可以做到这一点？

问如何在Android中清除通知
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