How to Save a FCM token in Android?
Just add this in your code..
public class MyActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my);
SharedPreferences prefs = getSharedPreferences("TOKEN_PREF", MODE_PRIVATE);
String token = prefs.getString("token", "");
Log.e("NEW_INACTIVITY_TOKEN", token);
if (TextUtils.isEmpty(token)) {
FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener(MyActivity.this, new OnSuccessListener<InstanceIdResult>() {
@Override
public void onSuccess(InstanceIdResult instanceIdResult) {
String newToken = instanceIdResult.getToken();
Log.e("newToken", newToken);
SharedPreferences.Editor editor = getSharedPreferences("TOKEN_PREF", MODE_PRIVATE).edit();
if (token!=null){
editor.putString("token", newToken);
editor.apply();
}
}
});
}
}
}
Firebase Tokens are called once when the app is installed and runned for the first time so ignore the Saving the data or running this Activity/Service once the Data is Saved with Shared Prefs
The onTokenRefresh
/onNewToken
method will only be called when a new token is generated.
Quite often (especially during development) your app will already have generated an Instance ID token before you added the service. So onTokenRefresh
/onNewToken
will not be called, and you won't have a token in your shared preferences.
For this reason you should get the token directly from your main activity with FirebaseInstanceId.getInstance().getInstanceId()
as shown in the documentation. This will pick up the token that was last generated. From there on you use onTokenRefresh
/onNewToken
to respond to token changes.
No need to Use getToken()
new token already returned by onNewToken
argument
@Override
public void onNewToken(String refreshedToken) {
// No need to assign refreshedToken with getToken,
// this method called when token refreshed then use returned refreshedToken directly,
// use `instanceIdResult.getToken()` described below when you need to use token later throw app usage.
// refreshedToken = FirebaseInstanceId.getInstance().getInstanceId().getResult().getToken();
Log.d(TAG, "Refreshed token: " + refreshedToken);
storeToken(refreshedToken);
}
getToken(); is also deprecated
Get Token in your Activity : .getToken(); is also deprecated if you need to get token in your activity then use as following:
FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener( MyActivity.this, new OnSuccessListener<InstanceIdResult>() {
@Override
public void onSuccess(InstanceIdResult instanceIdResult) {
String newToken = instanceIdResult.getToken();
Log.e("newToken",newToken);
}
});
May be it takes some time to generate token. If you don't get it you can generate it as follow: (Reference:https://firebase.google.com/docs/cloud-messaging/android/client?authuser=0)
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();
//Here you will surely get the token so store it in
//sharedpreference for future use
}
});