Question

首先，我已经对其进行搜索并找到了以下资源： How to send device to device messages using Firebase Cloud Messaging?我使用了改造方案，该资源也https://firebase.google.com/docs/cloud-messaging/migrate-v1，所以我对其进行了一些更改，这是我的代码

class NotificationActivity : AppCompatActivity() {

var token: String?= null
companion object {
    val channelId = "notificationChannelID"
    val channelName = "notificationChannelName"
    val channelDesc = "notificationChannelDesc"
}
var notificationService:NotificationService?= null

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_notification)
    notificationService = ApiClient().getClient()?.create(NotificationService::class.java)

    if ( Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){
        val notificationChannel = NotificationChannel(channelId, channelName, NotificationManager.IMPORTANCE_DEFAULT)
        notificationChannel.description = channelDesc
        val notificationManager = getSystemService(NotificationManager::class.java)
        notificationManager.createNotificationChannel(notificationChannel)
    }
    getFirebaseToken()
    notificationButton.setOnClickListener { createNotification() }


}

private fun createNotification() {
    val notification = Notification("notification", "it's work")
    val collapseKey = ""
    val data = Data("Hello2", "title2", "key1", "key2")
    val message = Message(token!!, collapseKey, notification, data)
    val call = notificationService?.sendMessage("Bearer key", message)
    call?.enqueue(object: retrofit2.Callback<Message> {
        override fun onFailure(call: Call<Message>, t: Throwable) {
            Toast.makeText(this@NotificationActivity, t.message, Toast.LENGTH_LONG).show()
        }

        override fun onResponse(call: Call<Message>, response: Response<Message>) {

        }
    })
}

private fun getFirebaseToken() {
    FirebaseInstanceId.getInstance().instanceId.addOnCompleteListener { task ->
        if (task.isSuccessful) {
            token = task.result?.token
            notificationButton.visibility = View.VISIBLE
        }
    }
}

我也有firebase消息服务，以防在前台应用程序发送通知时

class FirebaseMessagesService: FirebaseMessagingService() {

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

    if (remoteMessage?.notification != null){
        val title = remoteMessage.notification?.title
        val message = remoteMessage.notification?.body

        NotificationHelper.displayNotification(applicationContext, title, message)
    }
}
}

这是我的notificationhelper显示通知代码

    companion object {
    public fun displayNotification(context: Context, notificationText: String?, notificationTitle: String?) {
        val notifiationIntent = Intent(context, NotificationActivity::class.java)
        val notificationPendingIntent = PendingIntent.getActivity(
            context,
            100,
            notifiationIntent,
            PendingIntent.FLAG_CANCEL_CURRENT)

        val notificationBuilder = NotificationCompat.Builder(context, NotificationActivity.channelId)
            .setSmallIcon(R.drawable.whatsapp)
            .setColor(Color.GREEN)
            .setContentTitle(notificationTitle)
            .setContentText(notificationText)
            .setContentIntent(notificationPendingIntent)
            .setPriority(NotificationCompat.PRIORITY_DEFAULT)

        val notificationManagerCompact = NotificationManagerCompat.from(context)
        notificationManagerCompact.notify(1, notificationBuilder.build())
    }
}

这是我的改装API

   @POST("/messages:send")
fun sendMessage(@Header("Authorization") token: String, @Body message: Message): Call<Message>

我从firebase->设置-> serverKey获得了令牌，当我单击按钮时，什么也没有发生，也没有显示通知！

我在firebase上看到了一些文档，但是始终有服务器代码node.js和google凭据，所以我要再次澄清我的问题，是否可以通过无服务器应用将通知从android设备发送到android设备

我可以使用Firebase将通知从Android设备发送到具有无服务器应用程序的Android设备吗？

0 个答案: