android中的呼叫通知警报？

当我拨打电话并显示通知时，屏幕上只会显示图标，手机不会响或振动

这怎么会发生

我的代码：

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

     int icon = R.drawable.icon;
     CharSequence tickerText = "Hello";
     long when = System.currentTimeMillis ();

     Notification notification = new Notification (icon, tickerText, when);

     Context context = getApplicationContext ();
     CharSequence contentTitle = "My notification";
     CharSequence contentText = "My Message";
     Intent notificationIntent = new Intent (this, NotificationClic.class);
     PendingIntent contentIntent = PendingIntent.getActivity (this, 0, notificationIntent, 0);

     notification.setLatestEventInfo (context, contentTitle, contentText, contentIntent);
     notification.defaults = Notification.DEFAULT_SOUND;
     notification.flags | = Notification.FLAG_AUTO_CANCEL;

     mNotificationManager.notify (1, notification);

非常感谢您的帮助

试试这个

Uri sound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
notification.setSound(sound);

您需要使用

NotificationBuilder

来构建

通知

对象，然后分配参数。以下是一个基本示例：

Notification notification = new NotificationCompat.Builder(ctx)
            .setContentIntent(pIntent)
            .setContentTitle("Your Notification Title")
            .setContentText("Your Notification Text")
            .setSmallIcon(R.drawable.ic_launcher)
            .setSound(alarmSound)
            .build();