android：根据FCM通知的数据进行操作答案

【问题标题】：android: Make action according to FCM notification's dataandroid：根据FCM通知的数据进行操作
【发布时间】：2019-08-04 13:38:34
【问题描述】：

我正在开发一个使用firebase云消息接收通知的android应用程序，我将通知和数据从fcm发送到我的应用程序，当我的应用程序在点击通知栏时，我想根据fcm的数据进行操作背景，我使用下面的代码，当应用程序在前台时可以正常工作，但在后台它只是打开应用程序而不做任何操作：

class MyFirebaseMessagingService : FirebaseMessagingService() {
    val TAG = "FirebaseMessagingService"
    var count = 0
    @SuppressLint("LongLogTag")
    override fun onMessageReceived(remoteMessage: RemoteMessage) {

        if (remoteMessage.data != null && remoteMessage.data.isNotEmpty()) {
            val id = remoteMessage.data["id"].toString()
            val activityName = remoteMessage.data["view"].toString()
            val intent = Intent(this, NewsDetailesActivity::class.java)
            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
            NewsDetailesActivity.currentNewId = id
            startActivity(intent)

            showNotification(remoteMessage.notification?.title, remoteMessage.notification?.body,activityName,id)
        }
    }

    private fun showNotification(title: String?, body: String?,activityName:String,id:String?) {
        var intent = Intent(this, NewsDetailesActivity::class.java)
        if (activityName == "news")
        {
            intent = Intent(this, NewsDetailesActivity::class.java)
        }

        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)
        NewsDetailesActivity.currentNewId = id!!
        val pendingIntent = PendingIntent.getActivity(
            this, 0, intent,
            PendingIntent.FLAG_ONE_SHOT
        )

        val soundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION)
        val notificationBuilder = NotificationCompat.Builder(this, "channelId")
            .setSmallIcon(R.drawable.logo_orang)
            .setContentTitle(title)
            .setContentText(body)
            .setAutoCancel(true)
            .setSound(soundUri)
            .setContentIntent(pendingIntent)

        val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
        notificationManager.notify(count, notificationBuilder.build())
        count += 1

    }
}

如何修改我的应用以在后台运行？

【问题讨论】：

在您的应用处于后台时检查 this 关于数据负载的答案

标签： java android kotlin notifications firebase-cloud-messaging

【解决方案1】：

始终在通知 API 调用中发送数据对象像这样：

{  
    "data" : {
      "body" : "Watch Live Footlball Streaming online & stay updated with fastest live match scores on Hotstar",
            "content_available" : true,
            "title" : "Brazil vs. Denmark",
            "isScheduled":false,
            "scheduledTime":"2020-03-03 12:20:00",
            "stationCode":"PNB",
            "groupId":2

    },
  "to" : "epGANq1gDpE:APA91bHEuHS_QRILwI9GJ-x8Sz4DKjHRN0KX23R5TGx9HyRAN8caghmakMSnRavOf4Qwnmni3ByVRndvMjmMvfQnVt-2g6AgI5OB1-0vK3HQWDdhAjb155KWnYLXgEn763hSSbPX7tFm",
    "priority" : "high"

}

此外，请检查此示例以在后台运行。 https://github.com/googlecodelabs/android-kotlin-notifications-fcm

【讨论】：

但这不适用于 iOS 和 android，iOS 通知 API 需要有效载荷中的“通知”密钥，如何通过在该通知中采取的操作为两种环境发送相同的通知有效载荷？

【解决方案2】：

最后我找到了如下解决方案：

class MyFirebaseMessagingService : FirebaseMessagingService() {
    val TAG = "FirebaseMessagingService"
    var count = 0
    @SuppressLint("LongLogTag")
    override fun onMessageReceived(remoteMessage: RemoteMessage) {

        if (remoteMessage.data != null && remoteMessage.data.isNotEmpty()) {
            showNotification(remoteMessage.data)
        }
    }

    private fun showNotification(data :Map<String,String>) {
        var intent = Intent()
        var title =data["title"]
        var body =data["body"]
        var activityName = data["view"]

        if (activityName == "news")
        {
            intent = Intent(this, NewsDetailesActivity::class.java)
            var id = data["id"]
            NewsDetailesActivity.currentNewId = id!!
        }
      
        else if(activityName == "url") {
            val url  = data["url"]
            val b = Bundle()
            val uris = Uri.parse(url)
            intent = Intent(Intent.ACTION_VIEW, uris)
            b.putBoolean("new_window", true)
            intent.putExtras(b)
        }


        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
        val pendingIntent = PendingIntent.getActivity(this, 1, intent, PendingIntent.FLAG_UPDATE_CURRENT)



        val soundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION)
        val notificationBuilder = NotificationCompat.Builder(this, "channelId")
            .setSmallIcon(R.drawable.logo_orang)
            .setContentTitle(title)
            .setContentText(body)
            .setAutoCancel(true)
            .setSound(soundUri)
            .setContentIntent(pendingIntent)

        val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
        notificationManager.notify(count, notificationBuilder.build())
        count += 1
    }
}

在我的 API 上，我删除了通知密钥，只发送数据负载。

【讨论】：