Question

我正在制作一个程序，我希望该应用程序发出通知。当通知消失时，仅显示自动收报机文本。没有声音，振动或光线伴随着它。

以下是我的代码示例：

int icon = R.drawable.icon;  
NotificationManager notificationManager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);

Context context = getApplicationContext();      

CharSequence contentTitle = "My notification";  
CharSequence contentText = "Countdown Complete!";

Intent intent = new Intent();
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);
Notification notification = new Notification(icon, myCountDown.getName() + " is completed!", System.currentTimeMillis());

long[] vibrate = {0,100,200,300};
notification.vibrate = vibrate;
notification.defaults |= Notification.DEFAULT_LIGHTS;
notification.defaults |= Notification.DEFAULT_SOUND;
notification.setLatestEventInfo(context, contentTitle, contentText, pendingIntent);
notificationManager.notify(myCountDown.getId(), notification);

Answer 1

要添加通知灯，您需要添加它（请注意.flags，而不是.defaults）：

notification.flags |= Notification.FLAG_SHOW_LIGHTS;
notification.ledARGB=0xffffffff; //color, in this case, white
notification.ledOnMS=1000; //light on in milliseconds
notification.ledOffMS=4000; //light off in milliseconds

默认声音：

notification.defaults |= Notification.DEFAULT_SOUND;

对于默认振动模式：

notification.defaults |= Notification.DEFAULT_VIBRATE;

对于振动，如Dean Thomas所述，您需要获得许可<uses-permission android:name="android.permission.VIBRATE"/>

Answer 2

要使LED正常工作，您需要告诉它该做什么。

   notification.ledOnMS = 1000; //Be on for a second
   notification.ledOffMS = 1000; //Be off for a second
   notification.ledARGB = Color.GREEN; //What colour should the LED be?

要使振动工作，您需要在您的清单中添加权限

<uses-permission android:name="android.permission.VIBRATE"/>

Answer 3

您确定设备没有静音且实际上是否有用户选择的通知声音（也不是静音）？

要尝试的另一件事是：

[Note obj].sound = value
[Note obj].LEDARGB = value
[Note obj].vibrate = value

Answer 4

我发现setDefaults中有一个NotificationCompat.Builder方法，它可以让您调整通知偏好设置。这是一个例子：

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

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

builder.setSmallIcon(R.drawable.taiwanpic)
            .setWhen(System.currentTimeMillis())
            .setContentTitle("AAAAA")
            .setContentText("BBBBB")
            .setSubText("CCCCC")
            .setContentInfo("DDDDD")
            .setTicker("EEEEE")
            .setDefaults(Notification.DEFAULT_ALL);
int pid = android.os.Process.myPid();

notificationManager.notify(pid, builder.build());

如果您不使用所有默认值，也可以根据需要尝试DEFAULT_SOUND，DEFAULT_VIBRATE，DEFAULT_LIGHTS。

通知不发出声音或振动？

4 个答案: