如何在android中创建多个本地通知 [英] How to create multiple local notifications in android

问题描述

在我的 android 应用程序中，我需要在特定的一天以不同的时间间隔显示多个本地通知，我使用警报管理器和广播接收器来处理一个通知，但是当我尝试实现多个通知时，只有第二个通知显示.

In my android app I need to show multiple local notifications on a particular day at different time intervals,I used alarm manager and broadcast receiver to do for one notification but when I was trying to implement multiple notifications only the second one is been displayed.

这是我的主要活动

    AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);

    Intent notificationIntent = new Intent("android.media.action.DISPLAY_NOTIFICATION");
    notificationIntent.addCategory("android.intent.category.DEFAULT");

    PendingIntent broadcast = PendingIntent.getBroadcast(this, 100, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);

    Calendar cal = Calendar.getInstance();
    cal.set(2015, 10, 23, 15, 03);
    alarmManager.setExact(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), broadcast);

这里是广播接收器

Intent notificationIntent = new Intent(context, MainActivity.class);

    TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
    stackBuilder.addParentStack(MainActivity.class);
    stackBuilder.addNextIntent(notificationIntent);

    PendingIntent pendingIntent1 = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);

    NotificationCompat.Builder builder = new NotificationCompat.Builder(context);

    Notification notification = builder.setContentTitle("TRR - 2016")
            .setContentText("Station - 1 closed grace period only 10min")
            .setTicker("New Message Alert!")
            .setSmallIcon(R.mipmap.ic_launcher)
            .setDefaults(Notification.DEFAULT_SOUND)
            .setContentIntent(pendingIntent1).build();

    NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
    notificationManager.notify(mCounter, notification);

Notification notification1 = builder.setContentTitle("TRR - 2016")
            .setContentText("Station - 2 closed grace period only 10min")
            .setTicker("New Message Alert!")
            .setSmallIcon(R.mipmap.ic_launcher)
            .setDefaults(Notification.DEFAULT_SOUND)
            .setContentIntent(pendingIntent1).build();

    NotificationManager notificationManager1 = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
    notificationManager1.notify(++mCounter, notification1);

推荐答案

每个通知必须有自己的通知 ID.

Each Notification must have its own Notification ID.

您的问题在这里:

notificationManager.notify(0, notification);

具体来说，0"是通知的ID.如果您不提供不同的 ID，Android 会认为您只是在更新已经存在的通知.

Specifically, the "0" is the ID of the Notification. If you do not provide a different ID, Android will think you are simply updating the Notification that already exists.

文档.

public void notify (int id, Notification notification)

发布要在状态栏中显示的通知.如果通知您的应用程序已经发布了具有相同 ID 的尚未取消，将以更新的信息代替.

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.

你可以尝试这样的事情:

You could try something like this:

private int mCounter = 0;

...

notificationManager1.notify(++mCounter, notification1);

这篇关于如何在android中创建多个本地通知的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！