当应用程序在后台运行时，FCM无法显示弹出窗口 [英] FCM Cannot show pop up when app in the background

问题描述

如果fcm消息包含"notification"部分，并且应用程序处于后台，则将通知发送到系统托盘，并提供其他意图的数据.

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+修复了此问题，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);

和清单

<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，仅保留数据"，这将允许fcm将消息传递到

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)

当应用程序在后台/前景中时，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.

推荐答案

我发现的最佳解决方案是仅使用Data有效负载并处理onMessageReceived方法中的背景/前景消息，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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