java - android:根据FCM通知的数据采取行动

Question

我正在开发一个使用 firebase 云消息传递来接收通知的 Android 应用程序，我将通知和数据从 fcm 发送到我的应用程序，当我的应用程序处于状态时单击通知栏时，我想根据 fcm 的数据执行操作背景，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执行任何操作:

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

    }
}

如何修改我的应用程序以在后台运行？

Answer 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，请检查此示例是否在后台运行。 https://github.com/googlecodelabs/android-kotlin-notifications-fcm