点击后删除通知

Question

我刚开始使用通知功能，现在我正在尝试在通知中心中点击通知后删除通知并启动应用程序。

我尝试使用以下代码：

import android.app.NotificationManager;

public class ExpandNotification {
     private int NOTIFICATION = 546;
     private NotificationManager mNM;

     public void onCreate() {
        mNM.cancel(NOTIFICATION);
        setContentView(R.layout.activity_on);
        //Toast.makeText(this, "stopped service", Toast.LENGTH_SHORT).show();
    }

我认为这段代码在点击时会执行另一个类？

PendingIntent contentIntent = PendingIntent.getActivity(this, REQUEST_CODE, new Intent(this, ExpandNotification.class), 0);

然而通知并没有消失，应用程序也没有启动。但我可以左右滑动它来移除它，但这不是我想要的。

- user1756912

Answer 1

要使用Notification.Builder或NotificationCompat.Builder实现相同的效果，请在Builder实例上调用setAutoCancel(true)。

- 0101100101

Answer 2

使用标志 Notification.FLAG_AUTO_CANCEL

Notification notification = new Notification(icon, tickerText, when);
notification.setLatestEventInfo(context, contentTitle, contentText, pendingIntent);

// Cancel the notification after its selected
notification.flags |= Notification.FLAG_AUTO_CANCEL;

启动应用程序的方法：

NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);

// Create a new intent which will be fired if you click on the notification
Intent intent = new Intent(context, App.class);

// Attach the intent to a pending intent
PendingIntent pendingIntent = PendingIntent.getActivity(context, intent_id, intent, PendingIntent.FLAG_UPDATE_CURRENT);

- input

---

如果您没有指定ContentIntent（只想在点击通知时将其删除），那该怎么办？在这种情况下，auto_cancel标志似乎没有帮助... - Alex Semeniuk

回答自己的评论：你不能这样做。实现类似的方式唯一的方法是创建“空”的PendingIntent.setContentIntent(PendingIntent.getActivity(context, id, __new Intent()__, PendingIntent.FLAG_CANCEL_CURRENT));。但是，点击通知也会隐藏通知面板（如果您有很多需要以这种方式清除的通知，则必须将其拉回）。 - Alex Semeniuk

如果您正在使用NotificationCompat.Builder来构建通知，该怎么办？ - user3690202

Answer 3

这个答案晚了很多，但是我特别写下以下解决方案，因为通知构造函数已经被弃用了，所以使用构建器来实现通知，像下面这样：

 **.setAutoCancel(true)** is used to remove notification on click

整个通知如下：

  private void makeNotification(String title,String msg){

    Intent resultIntent = new Intent(this, MasterActivity.class);

    PendingIntent resultPendingIntent =
            PendingIntent.getActivity(
                    this,
                    0,
                    resultIntent,
                    PendingIntent.FLAG_UPDATE_CURRENT
            );

    NotificationCompat.Builder mBuilder =
            new NotificationCompat.Builder(this)
                    .setContentIntent(resultPendingIntent)
                    .setSmallIcon(R.drawable.ic_launcher)
                    .setContentTitle(title)
                    .setAutoCancel(true)
                    .setContentText(msg);

    int mNotificationId = 001;
    NotificationManager mNotifyMgr =
            (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    mNotifyMgr.notify(mNotificationId, mBuilder.build());

}

使用标题和消息调用此方法，您将获得完美的通知。

- Joseph Mekwan

Answer 4

您可以直接在代码中添加.setAutoCancel(true)这行来实现通知的点击后自动取消。

必须将此行添加到您的构建器变量中。

例如：

mBuilder = new NotificationCompat.Builder(mContext);
mBuilder.setSmallIcon(R.mipmap.ic_launcher);
mBuilder.setContentTitle("Notification")
        .setContentText("Hello")
        .setSound(Settings.System.DEFAULT_NOTIFICATION_URI)
        .setAutoCancel(true)
        .setContentIntent(pendingIntent);

- Dharmik

Answer 5

最简单的方法是设置 builder.setAutoCancel(true)，这样可以在点击通知后自动取消该通知。我希望这段代码能够帮到你。

通知构建器

NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
builder.setSmallIcon(android.R.drawable.btn_star);
builder.setContentTitle("This is title of notification");
builder.setContentText("This is a notification Text");
builder.setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher));

点击通知打开一个活动

Intent intent = new Intent(Broadcastdemo.this, ThreadDemo.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 113,intent, PendingIntent.FLAG_UPDATE_CURRENT);
builder.setContentIntent(pendingIntent);
builder.setAutoCancel(true);

显示构建器通知

NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
manager.notify(114, builder.build());

完整代码以显示具有图标、图像、标题、描述、自动取消并在单击时打开活动的通知：

public void ShowIntentNotification(View v)
    {
        NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
        builder.setSmallIcon(android.R.drawable.btn_star);
        builder.setContentTitle("This is title of notification");
        builder.setContentText("This is a notification Text");
        builder.setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher));

        Intent intent = new Intent(Broadcastdemo.this, ThreadDemo.class);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 113,intent, PendingIntent.FLAG_UPDATE_CURRENT);

        builder.setContentIntent(pendingIntent);
        builder.setAutoCancel(true);

        NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        manager.notify(114, builder.build());

    }

- AXN Unicode Technologies

Answer 6

对我来说，那是这样的

.setPriority(Notification.PRIORITY_HIGH);

导致通知在点击后无法清除的原因是...请确保使用：

.setPriority(Notification.PRIORITY_DEFAULT);

而且 .setAutoCancel(true) 应该可以工作。

- NickPR