//获取通知管理器

NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

    int icon = android.R.drawable.stat_notify_chat;

    long when = System.currentTimeMillis();

    //新建一个通知，指定其图标和标题

Notification notification = new Notification(icon, null, when);//第一个参数为图标,第二个参数为标题,第三个为通知时间

notification.defaults = Notification.DEFAULT_SOUND;//发出默认声音

Intent openintent = new Intent(this, OtherActivity.class);

    PendingIntent contentIntent = PendingIntent.getActivity(this, , openintent, );//当点击消息时就会向系统发送openintent意图

notification.setLatestEventInfo(this, “标题”, “我是内容", contentIntent);

    mNotificationManager.notify(, notification);//第一个参数为自定义的通知唯一标识