'Resource.String' Does not contain a definition for 'gcm_defaultSenderId' Xamarin

Question

I’m implementing Push Notification in my app, it was working, more now the error in two variables not defined in Resource in google_app_id and gcm_defaultSenderId. When I try to add them manually in Resource from the right of first more on second see that I will run already accuses me the error again (Resource file and overwritten)

what may be taking place so they don’t get fixed in my application ?

   if (!GetString(Resource.String.google_app_id).Equals("000000000000000000000000000"))
                throw new System.Exception("Invalid Json file");

        Task.Run(() => {
            var instanceId = FirebaseInstanceId.Instance;
            instanceId.DeleteInstanceId();
            Android.Util.Log.Debug("TAG", "{0} {1}", instanceId.Token, instanceId.GetToken(GetString(Resource.String.gcm_defaultSenderId), Firebase.Messaging.FirebaseMessaging.InstanceIdScope));
        });

Answer 1

This error occurs when you try to use a string that was not created in the Strings.xml file.

Inside the root of your project, log into the Resources/values folder and open the Strings.xml file. If you do not have this file, create a new one exactly with this name "Strings" of XML type.

Its structure is the following (already with the strings you need):

<?xml version="1.0" encoding="utf-8"?>
<resources>
  <string name="gcm_defaultSenderId">12345</string>
  <string name="google_app_id">12345</string>
</resources>

If you have more than one Strings.xml file, which can happen in case you are using multi-language support, add the two strings in all Strings.xml files to avoid possible errors.

Don’t forget to give Rebuild in the project after modifying these files.