Sıfırdan Push Notification Sistemi: Firebase Cloud Messaging

1plugins {
2id 'com.google.gms.google-services' version '4.4.0' apply false
3}

1plugins {
2id 'com.android.application'
3id 'com.google.gms.google-services'
4}
5
6dependencies {
7implementation 'com.google.firebase:firebase-messaging:23.4.1'
8}

1<service
2android:name=".MyFirebaseMessagingService"
3android:exported="false">
4<intent-filter>
5<action android:name="com.google.firebase.MESSAGING_EVENT" />
6</intent-filter>
7</service>

1import com.google.firebase.messaging.FirebaseMessagingService
2import com.google.firebase.messaging.RemoteMessage
3import android.app.NotificationChannel
4import android.app.NotificationManager
5import androidx.core.app.NotificationCompat
6
7class MyFirebaseMessagingService: FirebaseMessagingService() {
8override fun onMessageReceived(remoteMessage: RemoteMessage) {
9val title = remoteMessage.notification?.title?: "Başlık"
10val body = remoteMessage.notification?.body?: "İçerik"
11
12showNotification(title, body)
13}
14
15override fun onNewToken(token: String) {
16super.onNewToken(token)
17println("Yeni token: $token")
18// Token'ı sunucunuza gönderin
19}
20
21private fun showNotification(title: String, body: String) {
22val notificationManager = getSystemService(NOTIFICATION_SERVICE) as NotificationManager
23val channelId = "fcm_channel"
24
25if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
26val channel = NotificationChannel(channelId, "FCM Notifications", NotificationManager.IMPORTANCE_HIGH)
27notificationManager.createNotificationChannel(channel)
28}
29
30val notification = NotificationCompat.Builder(this, channelId).setSmallIcon(android.R.drawable.ic_dialog_info).setContentTitle(title).setContentText(body).setAutoCancel(true).build()
31
32notificationManager.notify(1, notification)
33}
34}
35[/cod]
36
37**MainActivity.kt**
38
39[kod]
40import com.google.firebase.messaging.FirebaseMessaging
41
42class MainActivity: AppCompatActivity() {
43override fun onCreate(savedInstanceState: Bundle?) {
44super.onCreate(savedInstanceState)
45setContentView(R.layout.activity_main)
46
47FirebaseMessaging.getInstance().token.addOnCompleteListener { task ->
48if (task.isSuccessful) {
49val token = task.result
50println("FCM Token: $token")
51}
52}
53}
54}