Question

您好我想在一个视图中显示所有通知..并想要更新状态栏中的通知数...它更新所有信息但显示数字始终为1 ..请告诉我如何解决它.. 。

@Override
public void onReceive(Context context, Intent intent)
{
    //Random randGen = new Random();
    //int notify_id = randGen.nextInt();
    NotificationManager notificationManager = (NotificationManager)
        context.getSystemService(Activity.NOTIFICATION_SERVICE);
    String title = intent.getStringExtra(TableUtils.KEY_TITLE);
    String occasion = intent.getStringExtra(TableUtils.KEY_OCCASION);
    Notification notification = 
        new Notification(R.drawable.icon, "Love Cardz" , 
                         System.currentTimeMillis());
    // notification.vibrate = new long[]{100,250,300,330,390,420,500};
    notification.flags |= Notification.FLAG_AUTO_CANCEL;
    notification.number+=1;
    Intent intent1 = new Intent(context, ThemesBrowserActivity.class);
    PendingIntent activity = 
        PendingIntent.getActivity(context, 1 , intent1, 
                                  PendingIntent.FLAG_UPDATE_CURRENT);
    notification.setLatestEventInfo(context, occasion, title, activity);
    notificationManager.notify(1, notification);
}

Answer 1

你必须跟踪计数。您可以扩展Application类：

public class AppName extends Application {
    private static int pendingNotificationsCount = 0;

    @Override
    public void onCreate() {
        super.onCreate();
    }

    public static int getPendingNotificationsCount() {
        return pendingNotificationsCount;
    }

    public static void setPendingNotificationsCount(int pendingNotifications) {
        pendingNotificationsCount = pendingNotifications;
    }
}

你应该修改onReceive：

@Override
public void onReceive(Context context, Intent intent) {
    ...
    int pendingNotificationsCount = AppName.getPendingNotificationsCount() + 1;
    AppName.setPendingNotificationsCount(pendingNotificationsCount);
    notification.number = pendingNotificationsCount;
    ...
}

您可以在用户打开通知时重置计数：

AppName.setPendingNotificationsCount(0);

Answer 2

这是我的代码，它有效。我只测试了旧的Android版本。我怀疑在较新的版本中，“数字”徽章已被隐藏，但我没有机会对其进行测试。

void notifyMsgReceived(String senderName, int count) {
    int titleResId;
    String expandedText, sender;

    // Get the sender for the ticker text
    // i.e. "Message from <sender name>"
    if (senderName != null && TextUtils.isGraphic(senderName)) {
        sender = senderName;
    }
    else {
        // Use "unknown" if the sender is unidentifiable.
        sender = getString(R.string.unknown);
    }

    // Display the first line of the notification:
    // 1 new message: call name
    // more than 1 new message: <number of messages> + " new messages"
    if (count == 1) {
        titleResId = R.string.notif_oneMsgReceivedTitle;
        expandedText = sender;
    }
    else {
        titleResId = R.string.notif_missedCallsTitle;
        expandedText = getString(R.string.notif_messagesReceivedTitle, count);
    }

    // Create the target intent
    final Intent intent = new Intent(this, TargetActivity.class);
    intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    final PendingIntent pendingIntent =
        PendingIntent.getActivity(this, REQUEST_CODE_MSG_RECEIVED, intent, PendingIntent.FLAG_UPDATE_CURRENT);

    // Build the notification
    Notification notif = new Notification(
        R.drawable.ic_notif_msg_received,  // icon
        getString(R.string.notif_msgReceivedTicker, sender), // tickerText
        System.currentTimeMillis()); // when
        notif.setLatestEventInfo(this, getText(titleResId), expandedText, pendingIntent);
    notif.number = count;
    notif.flags = Notification.FLAG_AUTO_CANCEL;

    // Show the notification
    mNotificationMgr.notify(NOTIF_MSG_RECEIVED, notif);
}

稍后更新通知也很容易：您只需要使用新值再次调用该方法。当且仅当创建通知时，该号码将显示在通知图标徽章中。

类似地，如果您将数字设置为小于1的数字，则数字徽章将不会被隐藏（数字将为您）。可能在重新显示之前清除通知可能会修复它。

Answer 3

你必须跟踪计数。您尝试在notif.number上执行的增量不起作用，因为该状态不可用（即notif.number始终为0，然后将其递增为1）。跟踪应用程序中的某个位置（可能是共享首选项），然后将其增加并存储在那里，然后在构建通知时设置

notif.number = myStoredValueForWhatShouldShowInNumber;

试一试。

Android - 如何更新通知编号

3 个答案: