如果 fcm 消息包含通知"部分且应用程序在后台，则将通知传递到系统托盘，并在意图的附加内容中提供数据.
If fcm message contains "notification" section and app is in the background, Notifications delivered to the system tray and data in extras of the intent.
问题是我无法更改此通知的重要性，并且它们始终不显示弹出窗口.我为 api 26+ 解决了这个问题，我用
The problem is that I cannot change Importance for this notifications and they always do not show the popup. I fixes this problem for api 26+, i added Notification channel with
int importance = NotificationManager.IMPORTANCE_HIGH;
NotificationChannel channel = new NotificationChannel(getString(R.string.default_notification_channel_id), name, importance);
在清单中
<meta-data
android:name="com.google.firebase.messaging.default_notification_channel_id"
android:value="@string/default_notification_channel_id"/>
但是对于 api 25- 我找不到解决方案.一个建议是删除通知"部分并仅保留数据"，这将允许 fcm 将消息传递给
But for the api 25- i cannot find the solutions. The one suggestions are to remove "notification" section and leave only "data", this will allow fcm deliver messages to
onMessageReceived(RemoteMessage remoteMessage)
当应用程序处于后台/前台时，我将能够显示我的自定义通知.
when app is in background/foreground and I will be able to show my custom notifications.
我发现的最佳解决方案是仅使用 Data 有效负载并处理 onMessageReceived 中的后台/前台消息方法并显示您的自定义通知.
The best solution i have found is to use only Data payload and handle both background/foreground messages inside onMessageReceivedmethod and show your custom notifications.
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