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I'm using firebase notifications. There are some times when I don't get the pushtoken on time. How can I wait for it?
pushToken = firebaseIDService.getToken();
//SOME CODE
registerUser(pushToken);
So, I just want to stop that function until I get the result of the getToken().
Thanks.
The token is generated asynchronously, and may be refreshed periodically. To ensure your app uses the latest token, implement FirebaseInstanceIdService .onTokenRefresh as shown in the documentation on monitoring token generation:
The onTokenRefreshcallback fires whenever a new token is generated, so calling getToken in its context ensures that you are accessing a current, available registration token. Make sure you have added the service to your manifest, then call getToken in the context of onTokenRefresh, and log the value as shown:
#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);
}
The sendRegistrationToServer function in the above snippet is something you'd implement yourself, so likely equivalent to registerUser in your code
Warning! Don't use it on main thread!
Also, it's a bad practice (probably), better use answer by #FrankvanPuffelen.
And I'm not sure it's working, but I'm using same approach for few async operations.
#WorkerThread
public String getTokeSync(Context context) {
String token = FirebaseInstanceId.getInstance().getToken();
if (token != null)
return token;
IntentFilter filter = new IntentFilter();
filter.addAction("com.google.android.c2dm.intent.RECEIVE");
filter.addCategory(BuildConfig.APPLICATION_ID);
final CountDownLatch lock = new CountDownLatch(1);
final FirebaseInstanceIdReceiver br = new FirebaseInstanceIdReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
token = FirebaseInstanceId.getInstance().getToken();
lock.countDown();
context.unregisterReceiver(this);
}
}
context.registerReceiver(br, filter);
lock.await(); // Better use await with timeout
return token;
}
I have setup Firebase using Firebase assistant in Android Studio. I am facing one small, but irritating issue. The notifications doesn't work on first launch, but working on all subsequent launches. e.g.
App-installed and opened for first time: Notifications are not received.
If I force-stop the app and restart: Notifications are working now.
I suspect that subscription request is not working on first request.
following is my token refresh code in android FirebaseInstanceIdService:
#Override
public void onTokenRefresh() {
String refreshedToken = FirebaseInstanceId.getInstance().getToken();
if(refreshedToken != null){
Log.d(TAG, "Refreshed token: " + refreshedToken);
FirebaseMessaging.getInstance().unsubscribeFromTopic("news");
sendTokenToServer(refreshedToken);
FirebaseMessaging.getInstance().subscribeToTopic("news");
}
}
I do get the registration token in first launch and it is sent to server successfully. But the notification is received only after restarting the app.
Any ideas why it is not working in first launch?
Edited code as suggested in comments. I have saved new token to sharedPrefs and called the Subscription function from activity. BUT THIS IS STILL NOT WORKING. App getting notification only after relaunching the app.
#Override
public void onTokenRefresh() {
String refreshedToken = FirebaseInstanceId.getInstance().getToken();
if(refreshedToken != null){
Log.d("FCGM", "Refreshed token: " + refreshedToken);
sendTokenToServer(refreshedToken);
myPrefs settings = new myPrefs(); //my class to handle prefs, working fine
settings.putBool("isNewToken",true);
settings.putString("token",refreshedToken);
}
}
then, in my activity onCreate function, i called the subscription function after a 5 sec delay to make sure that the token is generated and saved.
new Timer().schedule(new TimerTask() {
#Override
public void run() {
myPrefs settings = new myPrefs();
if (settings.getBool("isNewToken")){
Log.d(TAG,"new token found"); //this is reaching
FirebaseMessaging.getInstance().unsubscribeFromTopic("news");
FirebaseMessaging.getInstance().subscribeToTopic("news");
settings.putBool("isNewToken",false);
}
}
}, 5000);
Try moving your topic subscription into your Application subclass or your main activity, the code to subscribe to the topic looks after sending the correct token in the call.
Also by only having the subscription call in onTokenRefresh() what would happen if your user unsubscribed from the topic at a later stage? They wouldn't be able to re-subscribe at a later point.
Turned out the issue was GET request in my sendToken function, which was not finishing off. It should have been a POST method. I have now changed it and is working perfectly. my current onTokenRefresh code is:
#Override
public void onTokenRefresh() {
String refreshedToken = FirebaseInstanceId.getInstance().getToken();
if(refreshedToken != null){
FirebaseMessaging.getInstance().unsubscribeFromTopic("news");
sendTokenToServer(refreshedToken);
myPrefs settings = new myPrefs();
settings.putBool("isNewToken",true);
settings.putString("token",refreshedToken);
FirebaseMessaging.getInstance().subscribeToTopic("news");
Log.d(TAG, "Subscribed");
}
}
the send token code looks like this now:
client = (HttpURLConnection) url.openConnection();
client.setRequestMethod("POST");
client.setDoOutput(true);
OutputStream outputPost = new BufferedOutputStream(client.getOutputStream());
outputPost.write(params.getBytes());
outputPost.flush();
outputPost.close();
Hope it helps someone with similar issue.
I am using FCM to provide notifications in my app. Everything worked well, but now I realised that, when I install my application using Android Studio (not from GooglePlay) the token is null at first run. When I close my app and restart it, the token is not null anymore. What cause this problem and how can I avoid it?
InstanceIDService:
public class InstanceIDService extends FirebaseInstanceIdService {
#Override
public void onTokenRefresh() {
String token = FirebaseInstanceId.getInstance().getToken();
registerToken(token);
}
private void registerToken(String token) {
OkHttpClient client = new OkHttpClient();
RequestBody body = new FormBody.Builder()
.add("Token",token)
.build();
Request request = new Request.Builder()
.url("url_to_registration_script")
.post(body)
.build();
try {
client.newCall(request).execute();
} catch (IOException e) {
e.printStackTrace();
}
}
}
In MainActivity:
FirebaseMessaging.getInstance().subscribeToTopic("topic");
String token = FirebaseInstanceId.getInstance().getToken();
Log.d("TOKEN", token);
Last log returns null when app is installed and started for the first time
Registration script:
<?php
if (isset($_POST["Token"])) {
$_uv_Token=$_POST["Token"];
$conn = mysqli_connect("localhost","user","pass","db") or die("Error connecting");
$q="INSERT INTO users (Token) VALUES ( '$_uv_Token') "
." ON DUPLICATE KEY UPDATE Token = '$_uv_Token';";
mysqli_query($conn,$q) or die(mysqli_error($conn));
mysqli_close($conn);
}
?>
The token is fetched asynchronously on first app start. You have to wait for onTokenRefresh() to be called in your FirebaseInstanceIdService before the token can be accessed.
uninstall the app from emulator and run again , so that the onTokenRefreshed method will be called again .
To check wether you are already registered and you just want to know the FCM TOken
String refreshedToken = FirebaseInstanceId.getInstance().getToken();
add the above line in MyFirebaseMessagingService class any where(in oncreate method ) and just Toast or log the refreshedToken.
Just replace:
String token = instanceID.getToken();
with:
String token = instanceID.getToken($SENDER_ID, "FCM");
and it will work.
I was facing the same problem. I looked through a lot of SO posts and other forums and I found a solution that worked for me. FCM documentation says to use this method to get a token.
String refreshedToken = FirebaseInstanceId.getInstance().getToken();
I found a post online (I apologize, I don't remember which one. I found it a while ago) that used this method instead:
String refreshedToken = FirebaseInstanceId.getInstance().getToken() (String authorizedEntity, String scope);
FCM documentation describes the first method as:
Return the master token for the default Firebase project.
While the second one is described as:
Returns a token that authorizes an Entity to perform an action on behalf of the application identified by Instance ID.
This is similar to an OAuth2 token except, it applies to the application instance instead of a user.
For example, to get a token that can be used to send messages to an application via FirebaseMessaging, set to the sender ID, and set to "FCM".
I have been looking into why the first method call takes a longer time to return a token, but I haven't found an answer yet. Hope this helps.
Even I had the same issue. I had given the Log statement to print token in onCreate of my launcher activity. It takes time to refresh the token once you uninstall the app. Thats why you get null. You have to wait for a bit to get the token refreshed.
Sometimes network issues may occur, even internet is working fine....
check your FirebaseInstancId class defined in Manifest file in your android project.
I just fell in same issue and this is the way I fixed it. Call the block somewhere in onCreate() method of your activity. I want to sent the Token to my Parse server so you must change it based on your needs.
This is the sample I followed.
private void subscribeUserToParse() {
String deviceToken = FirebaseInstanceId.getInstance().getToken();
if (TextUtils.isEmpty(deviceToken)) {
Intent intent = new Intent(this, MyFirebaseInstanceIDService.class);
startService(intent);
return;
}
User user = UserUtil.retrieveUserFromDB(mRealm);
String objectId = user.getParseObjectId();
if (!TextUtils.isEmpty(objectId)) {
ParseUtils.subscribeWithUsersObjectId(objectId, deviceToken);
}
}
The biggest issue i faced after writing the correct code is:-
not the latest version of google play services in build-gradle,
So always use the google-play-services version shown by firebase in setting up dialog
I was having the same problem in a Android 4.2 device.
So, to solve the problem, first, check if your service, in the manifest, if it have a priority like this:
<service
android:name=".other.MyFirebaseInstanceIDService"
android:exported="false">
<intent-filter android:priority="1000">
<action android:name="com.google.firebase.INSTANCE_ID_EVENT"/>
</intent-filter>
</service>
Second, use a broadcast intent to notify your MainActivity that changed the token:
public class MyFirebaseInstanceIDService extends FirebaseInstanceIdService {
#Override
public void onTokenRefresh() {
// Get updated InstanceID token.
String refreshedToken = FirebaseInstanceId.getInstance().getToken();
final Intent intent = new Intent("tokenReceiver");
final LocalBroadcastManager broadcastManager = LocalBroadcastManager.getInstance(this);
intent.putExtra("token",refreshedToken);
broadcastManager.sendBroadcast(intent);
}
Then in MainActivity, in the onCreate, add this:
#Override
protected void onCreate(Bundle savedInstanceState) {
...
LocalBroadcastManager.getInstance(this).registerReceiver(tokenReceiver,
new IntentFilter("tokenReceiver"));
}
and, in the MainActivity, add a new BroadcastReceiver:
BroadcastReceiver tokenReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
String token = intent.getStringExtra("token");
if(token != null)
{
Log.e("firebase", String.valueOf(token));
// send token to your server
}
}
};
Since the getToken() method is deprecated, you have to replace it with a listener.
Just replace String token = FirebaseInstanceId.getInstance().getToken(); by the following code snippet:
FirebaseInstanceId.getInstance().getInstanceId()
.addOnCompleteListener(new OnCompleteListener<InstanceIdResult>() {
#Override
public void onComplete(#NonNull Task<InstanceIdResult> task) {
if (!task.isSuccessful()) {
Log.w(TAG, "getInstanceId failed", task.getException());
return;
}
// Get new Instance ID token
String token = task.getResult().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();
}
});
You can find the official google documentation here: https://firebase.google.com/docs/cloud-messaging/android/client
And a nice medium post will help you out as well: https://medium.com/#cdmunoz/fcm-getinstance-gettoken-in-android-is-now-deprecated-how-to-fix-it-3922a94f4fa4
It's my first time using FCM.
I download a sample from firebase/quickstart-android and I install the FCM Quickstart. But I can't get any token from the log even hit the LOG TOKEN button in the app.
Then I try to send a message with Firebase console and set to target my app package name. I got incoming messages.
I want to know can FCM be used?GCM everything is ok.
Solution:
Because I am not an Android developer, just a backend developer. So it takes me some time to solve it. In my opinion, there`re some bugs in the sample app.
Code：
RegistrationIntentService.java
public class RegistrationIntentService extends IntentService {
private static final String TAG = "RegIntentService";
public RegistrationIntentService() {
super(TAG);
}
#Override
protected void onHandleIntent(Intent intent) {
String token = FirebaseInstanceId.getInstance().getToken();
Log.i(TAG, "FCM Registration Token: " + token);
}
}
MyFirebaseInstanceIDService.java
public class MyFirebaseInstanceIDService extends FirebaseInstanceIdService {
private static final String TAG = "MyFirebaseIIDService";
/**
* Called if InstanceID token is updated. This may occur if the security of
* the previous token had been compromised. Note that this is called when the InstanceID token
* is initially generated so this is where you would retrieve the token.
*/
// [START refresh_token]
#Override
public void onTokenRefresh() {
// Get updated InstanceID token.
// String refreshedToken = FirebaseInstanceId.getInstance().getToken();
// Log.d(TAG, "Refreshed token: " + refreshedToken);
//
// // TODO: Implement this method to send any registration to your app's servers.
// sendRegistrationToServer(refreshedToken);
//
Intent intent = new Intent(this, RegistrationIntentService.class);
startService(intent);
}
// [END refresh_token]
/**
* Persist token to third-party servers.
* <p>
* 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) {
// Add custom implementation, as needed.
}
}
Add this in the MainActivity.java.
Intent intent = new Intent(this, RegistrationIntentService.class);
startService(intent);
After do above，you get the Token in Logcat. But finally, I find a convenient way to get it.Just use debug mode to install the sample app and you can get the token when you first time to install it.
But I don't know why it can't print the log when I install it. Maybe be related to the mobile system.
And then why I can't get the Notification. FirebaseMessagingService.onMessageReceived did not call sendNotification
FASTEST AND GOOD FOR PROTOTYPE
The quick solution is to store it in sharedPrefs and add this logic to onCreate method in your MainActivity or class which is extending Application.
FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener(this, instanceIdResult -> {
String newToken = instanceIdResult.getToken();
Log.e("newToken", newToken);
getActivity().getPreferences(Context.MODE_PRIVATE).edit().putString("fb", newToken).apply();
});
Log.d("newToken", getActivity().getPreferences(Context.MODE_PRIVATE).getString("fb", "empty :("));
CLEANER WAY
A better option is to create a service and keep inside a similar logic. Firstly create new Service
public class MyFirebaseMessagingService extends FirebaseMessagingService {
#Override
public void onNewToken(String s) {
super.onNewToken(s);
Log.e("newToken", s);
getSharedPreferences("_", MODE_PRIVATE).edit().putString("fb", s).apply();
}
#Override
public void onMessageReceived(RemoteMessage remoteMessage) {
super.onMessageReceived(remoteMessage);
}
public static String getToken(Context context) {
return context.getSharedPreferences("_", MODE_PRIVATE).getString("fb", "empty");
}
}
And then add it to AndroidManifest file
<service
android:name=".MyFirebaseMessagingService"
android:stopWithTask="false">
<intent-filter>
<action android:name="com.google.firebase.MESSAGING_EVENT" />
</intent-filter>
</service>
Finally, you are able to use a static method from your Service MyFirebaseMessagingService.getToken(Context);
THE FASTEST BUT DEPRECATED
Log.d("Firebase", "token "+ FirebaseInstanceId.getInstance().getToken());
It's still working when you are using older firebase library than version 17.x.x
FirebaseInstanceId class and it's method getInstanceId are also deprecated. So you have to use FirebaseMessaging class and it's getToken method instead.
FirebaseMessaging.getInstance().getToken().addOnSuccessListener(token -> {
if (!TextUtils.isEmpty(token)) {
Log.d(TAG, "retrieve token successful : " + token);
} else{
Log.w(TAG, "token should not be null...");
}
}).addOnFailureListener(e -> {
//handle e
}).addOnCanceledListener(() -> {
//handle cancel
}).addOnCompleteListener(task -> Log.v(TAG, "This is the token : " + task.getResult()));
The method getToken() is deprecated. You can use getInstanceId() instead.
If you want to handle results when requesting instanceId(token), check this code.
FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener(instanceIdResult -> {
if (instanceIdResult != null) {
String token = instanceIdResult.getToken();
if (!TextUtils.isEmpty(token)) {
Log.d(TAG, "retrieve token successful : " + token);
}
} else{
Log.w(TAG, "instanceIdResult should not be null..");
}
}).addOnFailureListener(e -> {
//do something with e
}).addOnCanceledListener(() -> {
//request has canceled
}).addOnCompleteListener(task -> Log.v(TAG, "task result : " + task.getResult().getToken()));
Complete Solution:
The team behind Firebase Android SDK change API a little bit. I've implemented "Token to Server" logic like this:
In my instance of FirebaseMessagingService:
public class FirebaseCloudMessagingService extends FirebaseMessagingService {
...
#Override
public void onNewToken(String token) {
// sending token to server here
}
...
}
Keep in mind that token is per device, and it can be updated by Firebase regardless of your login logic. So, if you have Login and Logout functionality, you have to consider extra cases:
When a new user logs in, you need to bind token to the new user (send it to the server). Because token might be updated during the session of old user and server doesn't know token of the new user.
When the user logs out, you need to unbind token. Because user should not receive notifications/messages anymore.
Using new API, you can get token like this:
FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener(new OnSuccessListener<InstanceIdResult>() {
#Override
public void onSuccess(InstanceIdResult instanceIdResult) {
String token = instanceIdResult.getToken();
// send it to server
}
});
Good luck!
Important information.
if google play service hung or not running,
then fcm return token = null
If play service working properly then FirebaseInstanceId.getInstance().getToken() method returns token
Log.d("FCMToken", "token "+ FirebaseInstanceId.getInstance().getToken());
According to doc
Migrate a GCM client app to FCM
onTokenRefresh()
only Called if InstanceID token is updated
So it will call only at first time when you install an app to your device.
So I suggest please uninstall your app manually and try to run again
definitely you will get TOKEN
Try this. Why are you using RegistrationIntentService ?
public class FirebaseInstanceIDService extends FirebaseInstanceIdService {
#Override
public void onTokenRefresh() {
String token = FirebaseInstanceId.getInstance().getToken();
registerToken(token);
}
private void registerToken(String token) {
}
}
If you are using above 'com.google.firebase:firebase-messaging:22.0.0'
Get FCM Token (Force) with Kotlin way:
FirebaseMessaging.getInstance().token.addOnCompleteListener { task: Task<String> ->
if (!task.isSuccessful) {
return#addOnCompleteListener
}
pushToken = task.result
Log.i("PUSH_TOKEN", "pushToken: $pushToken")
}
And you can get token via onNewToken method. (This class must be implemented)
class PushNotificationService: FirebaseMessagingService() {
override fun onNewToken(token: String) {
Log.e("PUSH_TOKEN", "Refreshed firebase token: $token")
}
}
You need add PushNotificationService to AndroidManifest.xml
<service
android:name=".PushNotificationService"
android:exported="false"
tools:ignore="Instantiatable">
<intent-filter>
<action android:name="com.google.firebase.MESSAGING_EVENT" />
</intent-filter>
</service>
This line should get you the firebase FCM token.
String token = FirebaseInstanceId.getInstance().getToken();
Log.d("MYTAG", "This is your Firebase token" + token);
Do Log.d to print it out to the android monitor.
At the same time don not forget to include this in your manifest file to receive token id
<service
android:name=".MyFirebaseInstanceIDService">
<intent-filter>
<action android:name="com.google.firebase.INSTANCE_ID_EVENT"/>
</intent-filter>
</service>
Instead of this:
// [START refresh_token]
#Override
public void onTokenRefresh() {
// Get updated InstanceID token.
// String refreshedToken = FirebaseInstanceId.getInstance().getToken();
// Log.d(TAG, "Refreshed token: " + refreshedToken);
//
// TODO: Implement this method to send any registration to your app's servers.
// sendRegistrationToServer(refreshedToken);
//
Intent intent = new Intent(this, RegistrationIntentService.class);
startService(intent);
}
// [END refresh_token]
Do this:
// [START refresh_token]
#Override
public void onTokenRefresh() {
// Get updated InstanceID token.
String refreshedToken = FirebaseInstanceId.getInstance().getToken();
// Log.d(TAG, "Refreshed token: " + refreshedToken);
// Implement this method to send token to your app's server
sendRegistrationToServer(refreshedToken);
}
// [END refresh_token]
And one more thing:
You need to call sendRegistrationToServer() method
which will update token on server, if you are sending push
notifications from server.
UPDATE:
New Firebase token is generated (onTokenRefresh() is called) when:
The app deletes Instance ID
The app is restored on a new device
The user uninstalls/reinstall the app
The user clears app data.
The FirebaseInstanceId.getInstance().getInstanceId() is deprecated. Based on firebase document, you can retrieve the current registration token using following code:
FirebaseMessaging.getInstance().getToken()
.addOnCompleteListener(new OnCompleteListener<String>() {
#Override
public void onComplete(#NonNull Task<String> task) {
if (!task.isSuccessful()) {
Log.w(TAG, "Fetching FCM registration token failed", task.getException());
return;
}
// Get new FCM registration token
String token = task.getResult();
// 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();
}
});
If you are using kotlin and co-routine then add kotlin coroutine play
library
implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-play-services:x.x.x'
use this simple method:
FirebaseMessaging.getInstance().token.await()
UPDATE 11-12-2020
When you use 'com.google.firebase:firebase-messaging:21.0.0' is FirebaseInstanceIdis depreacted now
Now we need to use FirebaseInstallations.getInstance().getToken() and FirebaseMessaging.getInstance().token
SAMPLE CODE
FirebaseInstallations.getInstance().getToken(true).addOnCompleteListener {
firebaseToken = it.result!!.token
}
// OR
FirebaseMessaging.getInstance().token.addOnCompleteListener {
if(it.isComplete){
firebaseToken = it.result.toString()
Util.printLog(firebaseToken)
}
}
You can use this method to get device token with firebase
FirebaseMessaging.getInstance().getToken().addOnCompleteListener(new OnCompleteListener<String>() {
#Override
public void onComplete(#NonNull Task<String> task) {
String deviceToken = task.getResult();
}
});
In firebase-messaging:17.1.0 and newer the FirebaseInstanceIdService is deprecated, you can get the onNewToken on the FirebaseMessagingService class as explained on https://stackoverflow.com/a/51475096/1351469
But if you want to just get the token any time, then now you can do it like this:
FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener( this.getActivity(), new OnSuccessListener<InstanceIdResult>() {
#Override
public void onSuccess(InstanceIdResult instanceIdResult) {
String newToken = instanceIdResult.getToken();
Log.e("newToken",newToken);
}
});
If are using some auth function of firebase, you can take token using this:
//------GET USER TOKEN-------
FirebaseUser mUser = FirebaseAuth.getInstance().getCurrentUser();
mUser.getToken(true)
.addOnCompleteListener(new OnCompleteListener<GetTokenResult>() {
public void onComplete(#NonNull Task<GetTokenResult> task) {
if (task.isSuccessful()) {
String idToken = task.getResult().getToken();
// ...
}
}
});
Work well if user are logged. getCurrentUser()
This the latest code to get fcm token in Activity (2021).
FirebaseMessaging.getInstance().getToken()
.addOnCompleteListener(new OnCompleteListener<String>() {
#Override
public void onComplete(#NonNull Task<String> task) {
if (!task.isSuccessful()) {
Log.w(TAG, "Fetching FCM registration token failed", task.getException());
return;
}
// Get new FCM registration token
String token = task.getResult();
Log.d(TAG, "fcm token : "+token);
}
});
For new Token just add the newToken Method in FirebaseMessagingService extended class.
#Override
public void onNewToken(String token) {
super.onNewToken(token);
Log.d(TAG, token);
}
try this
FirebaseInstanceId.getInstance().instanceId.addOnSuccessListener(OnSuccessListener<InstanceIdResult> { instanceIdResult ->
fcm_token = instanceIdResult.token}
for those who land here, up to now FirebaseInstanceIdService is deprecated now, use instead:
public class MyFirebaseMessagingService extends FirebaseMessagingService {
#Override
public void onNewToken(String token) {
Log.d("MY_TOKEN", "Refreshed token: " + token);
// 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(token);
}
}
and declare in AndroidManifest
<application... >
<service android:name=".fcm.MyFirebaseMessagingService">
<intent-filter>
<action android:name="com.google.firebase.MESSAGING_EVENT" />
</intent-filter>
</service>
</application>
FirebaseInstanceId.getInstance().getInstanceId().addOnCompleteListener(new OnCompleteListener<InstanceIdResult>() {
#Override
public void onComplete(#NonNull Task<InstanceIdResult> task) {
if (!task.isSuccessful()) {
Log.w(TAG, "getInstanceId failed", task.getException());
return;
}
// Get new Instance ID token
String **token** = task.getResult().getToken();
}
});
Example to get firebase token inside suspend function
override suspend fun sendTokenToServer() {
try {
val token = FirebaseMessaging.getInstance().token.await()
Log.i("TAG", "token " + token)
} catch (exception:Exception) {
}
}
I'll make this short. This is the only non-deprecated way to retrieve the Firebase's token:
FirebaseInstallations.getInstance().getToken(true).addOnCompleteListener(task -> {
// get token
String token = task.getResult().getToken();
})
Use below code for latest firebase version - 'com.google.firebase:firebase-messaging:22.0.0'
FirebaseMessaging.getInstance().getToken()
.addOnCompleteListener(task -> {
if (!task.isSuccessful()) {
//handle token error
return;
}
strAppToken = task.getResult();
});
You can use the following in Firebase (FCM) to get the token:
FirebaseInstanceId.getInstance().getToken();
FirebaseInstanceId.getInstance().getInstanceId() deprecated.
Now get user FCM token
FirebaseMessaging.getInstance().getToken()
.addOnCompleteListener(new OnCompleteListener<String>() {
#Override
public void onComplete(#NonNull Task<String> task) {
if (!task.isSuccessful()) {
System.out.println("--------------------------");
System.out.println(" " + task.getException());
System.out.println("--------------------------");
return;
}
// Get new FCM registration token
String token = task.getResult();
// Log
String msg = "GET TOKEN " + token;
System.out.println("--------------------------");
System.out.println(" " + msg);
System.out.println("--------------------------");
}
});
Flutter solution:
var token = await FirebaseMessaging.instance.getToken();
Settings.Secure.getString(getContentResolver(),
Settings.Secure.ANDROID_ID);
I have just migrated to FCM. I have added my class that extends from FirebaseInstanceIdService to receive a refreshedToken as and when appropriate.
My question is specific to the case when user installs my app first time and due to some reason, unable to receive a registration Id from onTokenRefresh. How are we supposed to handle this? Can I set a broadcast receiver from my FirebaseInstanceIdService class which will notify the Main activity when a registration Id is received?
if your device have no connection to the internet onTokenRefresh() is never called and you should notify to user his/her device has no internet connection
firebase has its own network change listener and when a device connected to the internet then try to get token and return it, at this time you can tell your main activity by sending a local broadcast receiver that registration token is received.
use below codes:
#Override
public void onTokenRefresh() {
// Get updated InstanceID token.
String refreshedToken = FirebaseInstanceId.getInstance().getToken();
Log.d("FCN TOKEN GET", "Refreshed token: " + refreshedToken);
final Intent intent = new Intent("tokenReceiver");
// You can also include some extra data.
final LocalBroadcastManager broadcastManager = LocalBroadcastManager.getInstance(this);
intent.putExtra("token",refreshedToken);
broadcastManager.sendBroadcast(intent);
}
in your main activity:
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash);
LocalBroadcastManager.getInstance(this).registerReceiver(tokenReceiver,
new IntentFilter("tokenReceiver"));
}
BroadcastReceiver tokenReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
String token = intent.getStringExtra("token");
if(token != null)
{
//send token to your server or what you want to do
}
}
};
}
Change this in manifest.xml file
tools:node="replace"
to
tools:node="merge".
As far as I know, token will be null only when you try to run your app on emulator on which google play service is not there and when you are using dual email id on you google play store(on you actual device), but only one email id is verified for the usage. Those are the cases which will give you null token and I have already implemented FCM in my new project. So for rest of any cases , token won't be null.
Use this class extends with..
public class MyFirebaseInstanceIDService extends FirebaseInstanceIdService {
private static final String TAG = "MyFirebaseIIDService";
public static final String REGISTRATION_SUCCESS = "RegistrationSuccess";
#Override
public void onTokenRefresh() {
String refreshedToken = FirebaseInstanceId.getInstance().getToken();
Log.d(TAG, "Refreshed token: " + refreshedToken);
Toast.makeText(MyFirebaseInstanceIDService.this,refreshedToken,Toast.LENGTH_LONG).show();
}
}
I was facing the same problem. I looked through a lot of SO posts and other forums and I found a solution that worked for me. FCM documentation says to use this method to get a token.
String refreshedToken = FirebaseInstanceId.getInstance().getToken();
I found a post online (I apologize, I don't remember which one. I found it a while ago) that used this method instead:
String refreshedToken = FirebaseInstanceId.getInstance().getToken() (String authorizedEntity, String scope);
FCM documentation describes the first method as:
Return the master token for the default Firebase project.
While the second one is described as:
Returns a token that authorizes an Entity to perform an action on behalf of the application identified by Instance ID.
This is similar to an OAuth2 token except, it applies to the application instance instead of a user.
For example, to get a token that can be used to send messages to an application via FirebaseMessaging, set to the sender ID, and set to "FCM".
I have been looking into why the first method call takes a longer time to return a token, but I haven't found an answer yet. Hope this helps.
depending on your application logic you can write the code to handle the "new" token directly in the FirebaseInstanceIdService.onTokenRefresh() method, or you can use a LocalBroadcast to send this information to your activity if you need to change the UI when this event happens.
Note that when onTokenRefresh() is called your activity could be closed.
A possible implementation could a mix of the two options:
add some logic in onTokenRefresh() to send the token to your server
use a LocalBroadcastReceiver to inform your activity, if you have a piece of UI that need to change when the token is available.
If you are running it on your emulator, check that you have Google play services enabled in Tools -> Android -> SDK Manager -> SDK Tools -> Google play services
Once installed, reboot both Android Studio and your emulator
It worked for me