如何在后台和 Kill 中执行自定义轮流 on/off 推送通知

Question

我需要开发自定义轮流 off/on 推送通知。我从 SharedPreferences 获得值 "on" 或 "off"。

在Foreground中，关闭选项效果很好，因为它可以在onMessageReceived中设置。

但是如何为 Kill 和 Background 模式执行此选项？

我使用 Postman 发送推送通知。

我在 FMC 中的代码：

class MyFirebaseMessagingService : FirebaseMessagingService() {

private val CURRENT_PUSH = "currentPush"
private var sPref: SharedPreferences? = null

override fun onMessageReceived(remoteMessage: RemoteMessage?) {
    super.onMessageReceived(remoteMessage)

    if(loadCurrentPushNotification()) {
        if (remoteMessage!!.data != null) sendNotification(remoteMessage)
    }
}

private fun sendNotification(remoteMessage: RemoteMessage) {
    val data = remoteMessage.data

    val title = data["title"]
    val content = data["content"]

    val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
    val NOTIFICATION_CHANNEL_ID = "1234"

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        @SuppressLint("WrongConstant") val notificationChannel = NotificationChannel(NOTIFICATION_CHANNEL_ID,
                "SA Notification",
                NotificationManager.IMPORTANCE_MAX)

        notificationChannel.description = "SA channel notification"
        notificationChannel.enableLights(true)
        notificationChannel.lightColor = Color.RED
        notificationChannel.vibrationPattern = longArrayOf(0, 1000, 500, 1000)
        notificationChannel.enableVibration(true)

        notificationManager.createNotificationChannel(notificationChannel)
    }


    val notificationBuilder = NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID)

    notificationBuilder.setAutoCancel(true)
            .setDefaults(Notification.DEFAULT_ALL)
            .setWhen(System.currentTimeMillis())
            .setSmallIcon(R.drawable.sa_launcher)
            .setContentTitle(title)
            .setContentText(content)
            .setContentInfo("Breaking")

    notificationManager.notify(1, notificationBuilder.build())
}

private fun loadCurrentPushNotification(): Boolean { //to read the status push notification from SharedPreferences
    sPref = getSharedPreferences("pushesOnOff", Context.MODE_PRIVATE)
    return sPref!!.getBoolean(CURRENT_PUSH, true)
}

}

Answer 1

我怀疑您的推送通知 payload/content 包含 notification 键，例如

notification : { 'title':'This is title' }

如果这是真的，那么当您的应用程序被终止时，您将不会收到 onMessageReceived 回调，因此您的检查将不起作用。为了防止这种情况，请从您的有效负载中删除 notification 并仅发送 data 并且它应该在 android 端没有任何更改的情况下工作。

您可以阅读有关此行为的信息HERE.

如何在后台和 Kill 中执行自定义轮流 on/off 推送通知

How to do custom turn on/off push notification in Background and Kill

android

postman

firebase-cloud-messaging

android-push-notification