Android-收到通知，但没有通知弹出窗口(前景) [英] Android - Notification received but no notification popup (Foreground)

问题描述

我的应用正确接收了通知，但未显示带有接收到的信息的弹出通知(如果已打开应用).

My app is receiving the notification correctly but is failing to show a notification pop up with the received info (If the app is opened).

N.B .:如果应用程序在后台运行，则显示的通知没有任何问题.

我的代码:

我通过这种方法收到通知:

I receive the notification in this method:

@Override
public void onMessageReceived(RemoteMessage remoteMessage)
{
    Log.d(TAG, "From: " + remoteMessage.getFrom());

    if(remoteMessage!=null)
    {
        String id = null;
        String title = null;
        String body = null;
        String launchPage = null;

        if(remoteMessage.getNotification()!=null)
        {
            title = remoteMessage.getNotification().getTitle();
            body = remoteMessage.getNotification().getBody();
        }

        if(remoteMessage.getMessageId()!=null)
        {
            id = remoteMessage.getMessageId();
        }

        Log.i(TAG, "id: " + id);
        Log.i(TAG, "title: "+ title);
        Log.i(TAG, "body: " + body);

        int notif_id = 0;

        sendNotification(notif_id, title, body, launchPage);
    }
}

然后将其称为此消息(按照我的理解应该显示该通知):

then it calls this one (which is supposed to show the notification as i understand):

private void sendNotification(int id, String title, String messageBody, String launchPage)

    Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);

    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
                    .setSmallIcon(android.R.drawable.stat_sys_download)
                    .setContentTitle("OMR - "+title)
                    .setContentText(messageBody)
                    .setAutoCancel(true)
                    .setSound(defaultSoundUri)
                    .setColor(ContextCompat.getColor(this, R.color.colorPrimary))
                    .setChannelId(CHANNEL_ID);

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

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        createChannel(notificationManager, CHANNEL_ID);
    }

    Toast.makeText(this, "Received a notif...", Toast.LENGTH_SHORT).show();

    //this line is not showing a notification
    notificationManager.notify(id, notificationBuilder.build());
}

---

Firebase通知

---

Firebase notification

{
"data": {
    "message": "data payload only used to force using OnMessageReceived() if in BACKGROUND",
    "notif_id": 1
},
"to" : "e04OAVaRw30:APA91bGyv5_tt4IWRkurjlqkqNlCxTBV8oRne18tQ5puniHPItOMgg11kdt56t5jfZnasb4Ms-tH9xUgWQhHy2eM487llRtlM9_V_PoWJI9KSr6XgCaysiDyS",
"notification": {
    "title": "Notification",
    "body": "This is Notification 2",
    "sound":"default"
}

}

结果

• 通知是否正确构建
• 声音正确播放
• 注意是否已放入系统托盘
• 但没有出现任何通知弹出窗口(我必须显示一个 自定义对话框)

• the notification is built correctly
• sound played correctly
• notif put in system tray
• BUT no notification popup appears (i have to show a custom dialog for that)

我的问题在于此特定行

notificationManager.notify(id, notificationBuilder.build());

无法显示通知

更新 我已经在

https://developer.android.com/guide/topics/ui /notifiers/notifications

，发现通知仅显示在通知抽屉中而不弹出(如Heads-up notifications).

and found out that notifications only show in the notification drawer without popping up (as Heads-up notifications).

，并根据此

如果您使用的是FCM，此图片将对所有内容进行说明.

This image explains it all if you are using FCM.

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