Use Firebase console to send FCM messages to device or emulator.
INTRODUCTION
- Read more about Firebase Cloud Messaging
GETTING STARTED
- Add Firebase to your Android Project.
- Run the sample on Android device or emulator.
SEND TO A SINGLE DEVICE
- From Firebase console Notification section, click New Message.
- Enter the text of your message in the Message Text field.
- Set the target to Single Device.
- Check the logs for the InstanceID token, copy and paste it into the Firebase console Token field.
- If you cannot find the token in your logs, click on the LOG TOKEN button in the application and the token will be logged in logcat.
- Click on the Send Message button.
- If your application is in the foreground you should see the incoming message printed in the logs. If it is in the background, a system notification should be displayed. When the notification is tapped, the application should return to the quickstart application.
SEND TO A TOPIC
- From Firebase console Notification section, click New Message.
- Enter the text of your message in the Message Text field.
- Click on the SUBSCRIBE TO NEWS button to subscribe to the news topic.
- Set the target to Topic.
- Select the news topic from the list of topics ("news" in this sample). You must subscribe from the device or emulator before the topic will will be visible in the console.
- Click on the Send Message button.
- If your application is in the foreground you should see the incoming message printed in the logs. If it is in the background, a system notification should be displayed. When the notification is tapped, the application should return to the quickstart application.
MainActivity
public class MainActivity extends AppCompatActivity { private static final String TAG = "MainActivity"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { // Create channel to show notifications.
String channelId = getString(R.string.default_notification_channel_id);
String channelName =
getString(R.string.default_notification_channel_name);
NotificationManager notificationManager =
getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(new NotificationChannel
(channelId,
channelName, NotificationManager.IMPORTANCE_LOW));
}
// If a notification message is tapped, any data accompanying the notification
// message is available in the intent extras. In this sample the launcher
// intent is fired when the notification is tapped, so any accompanying data would
// be handled here. If you want a different intent fired, set the click_action
// field of the notification message to the desired intent. The launcher intent
// is used when no click_action is specified. //
// Handle possible data accompanying notification message.
// [START handle_data_extras] if (getIntent().getExtras() != null) { for (String key : getIntent().getExtras().keySet()) { Object value = getIntent().getExtras().get(key); Log.d(TAG, "Key: " + key + " Value: " + value); } } // [END handle_data_extras] Button subscribeButton = findViewById(R.id.subscribeButton); subscribeButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // [START subscribe_topics]
FirebaseMessaging.getInstance().subscribeToTopic("news"); // [END subscribe_topics]
// Log and toast
String msg = getString(R.string.msg_subscribed); Log.d(TAG, msg); Toast.makeText(MainActivity.this, msg, Toast.LENGTH_SHORT).show(); } }); Button logTokenButton = findViewById(R.id.logTokenButton); logTokenButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // Get token
String token = FirebaseInstanceId.getInstance().getToken(); // Log and toast
String msg = getString(R.string.msg_token_fmt, token); Log.d(TAG, msg); Toast.makeText(MainActivity.this, msg, Toast.LENGTH_SHORT).show(); } }); } }
MyFirebaseInstanceIDService* the previous token had been compromised. Note that thisis called when the InstanceID token* is initially generated so this is where you wouldretrieve the token.*/ // [START refresh_token] @Override public void onTokenRefresh() { // Get updated InstanceID token.String refreshedToken = FirebaseInstanceId.getInstance().getToken(); Log.d(TAG, "Refreshed token: " + refreshedToken); // If you want to send messages to this application instance or// manage this apps subscriptions on the server side, send the// Instance ID token to your app server.sendRegistrationToServer(refreshedToken); } // [END refresh_token] /** * Persist token to third-party servers. ** Modify this method to associate the user's FCM InstanceID token with any server-side account* maintained by your application.* * @param token The new token. */private void sendRegistrationToServer(String token) { // TODO: Implement this method to send token to your app server. } }MyFirebaseMessagingServiceof messages data messages andnotification messages. Data messages are handled// here in onMessageReceived whether the app is in the foreground or background. Data messages are the type// traditionally used with GCM. Notification messagesare only received here in onMessageReceived when the app// is in the foreground. When the app is in the background an automatically generated notification is displayed.// When the user taps on the notification they are rturned to the app. Messages containing both notification// and data payloads are treated as notification messages. The Firebase console always sends notification// messages. For more see: https://firebase.google.com/docs/cloud-messaging/concept-options // [END_EXCLUDE] // TODO(developer): Handle FCM messages here.// Not getting messages here? See why this may be: https://goo.gl/39bRNJLog.d(TAG, "From: " + remoteMessage.getFrom()); // Check if message contains a data payload.if (remoteMessage.getData().size() > 0) { Log.d(TAG, "Message data payload: " + remoteMessage.getData()); if (/* Check if data needs to be processed by long running job */true){ // For long-running tasks (10 seconds or more) use Firebase Job Dispatcher. scheduleJob(); } else { // Handle message within 10 secondshandleNow(); } } // Check if message contains a notification payload.if (remoteMessage.getNotification() != null) { Log.d(TAG, "Message Notification Body: " +remoteMessage.getNotification().getBody()); } // Also if you intend on generating your own notifications as a result of a received FCM// message, here is where that should be initiated. See sendNotification method below. } // [END receive_message] /** * Schedule a job using FirebaseJobDispatcher. */private void scheduleJob() { // [START dispatch_job]FirebaseJobDispatcher dispatcher = new FirebaseJobDispatcher(new GooglePlayDriver(this)); Job myJob = dispatcher.newJobBuilder() .setService(MyJobService.class) .setTag("my-job-tag") .build(); dispatcher.schedule(myJob); // [END dispatch_job] } /** * Handle time allotted to BroadcastReceivers. */private void handleNow() { Log.d(TAG, "Short lived task is done."); } /** * Create and show a simple notification containing the receivedFCM message. ** @param messageBody FCM message body received.*/ private void sendNotification(String messageBody) { Intent intent = new Intent(this, MainActivity.class); intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); PendingIntent pendingIntent = PendingIntent.getActivity(this, 0/* Request code */,intent, PendingIntent.FLAG_ONE_SHOT); String channelId = getString(R.string.default_notification_channel_id); Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, channelId) .setSmallIcon(R.drawable.ic_stat_ic_notification) .setContentTitle("FCM Message") .setContentText(messageBody) .setAutoCancel(true) .setSound(defaultSoundUri) .setContentIntent(pendingIntent); NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); notificationManager.notify(0 /* ID of notification */,notificationBuilder.build()); } }MyJobService
