Cannot resolve symbol default_web_client_id in Firebase's Android Codelab

Question

I am trying to learn Firebase, so I went through the Android Codelab. The project they gave me however, had an error:

Cannot resolve symbol default_web_cl

Answer 1

In addition to the Dexto's Answer I would like to mention one more thing In the JSON file you will get two kind of client id

One Which is having client_type value 1 and Another with the client_type value 3 Make sure you specified the client_id of client_type which has value of 3

Answer 2

Download your newest google-services.json. List of client_id is present for OAuth 2.0 client IDs in your Google Cloud Credentials.

Then check whether it contains client_id with "client_type" : 3 or not. If not, you need to create a new one:

1. Open the Credentials page in the API Console.
2. Click Create credentials -> OAuth cliend ID. Then chose type Web application.
3. Wait 2-3 minutes, refresh Firebase Console & download your google-services.json again. It should contain client_id with "client_type" : 3 now.

Clean & rebuild your project to apply new API config.

---

The client_id with "client_type" : 3 is usually inside oauth_client tag, not services or other_platform_oauth_client.

If you fall to this case & cannot build the project, try copy your client_id to oauth_client tag and rebuild again.

"client": [
        ...
        "oauth_client": [
            ...
            {
              "client_id": "YOUR WEB CLIENT ID",
              "client_type": 3
            }
        ]
]     

Answer 3

in my case I forgot to add

id 'com.google.gms.google-services'

to the plugin of build.gradle(:app)

Answer 4

classpath 'com.google.gms:google-services:4.1.0'

has a problem. instead use:

classpath 'com.google.gms:google-services:4.2.0'

Answer 5

I know it is late to answer but hope this will help someone in the future.

To access there is no need to hard code default_web_client_id in app.

To access default_web_client_id in Android App from google-services.json, we have to add SHA1 key under FireBase project Settings.

Go to Firebase Console > Open Project > Select App > Add Fingerprint.

After this copy generated google-services.json to project.

After this you will see the difference in json file as below:

Before :

"oauth_client": []

After :

"oauth_client": [
    {
      "client_id": "23........4-asdj...........................asda.googleusercontent.com",
      "client_type": 1,
      "android_info": {
        "package_name": "com.abc.xyz",
        "certificate_hash": "asjhdashhs"
      }
    },.....

This will solve your issue.

Answer 6

Apparently R.string.default_web_client_id is generated from the IDE build

I had assumed we are supposed to manually add it - time consuming mistake

https://developers.google.com/android/guides/google-services-plugin

The google-services plugin has two main functions: 1) Process the google-services.json file and produce Android resources that can be used in your application's code.

~~~~

The main result of the JSON processing is to produce two XML files which you can reference as Android resources in your Java code.

And so - after successful build, if you search the IDE for string default_web_client_id , you will see one result is values.xml under the /generated folder, and there it has the values for your firebase config, like the example below.

Actually seeing that file, helped to clarify things here

<resources>
    <string name="default_web_client_id" translatable="false">123.apps.googleusercontent.com</string>
    <string name="firebase_database_url" translatable="false">https://123.firebaseio.com</string>
    <string name="gcm_defaultSenderId" translatable="false">123</string>
    <string name="google_api_key" translatable="false">123</string>
    <string name="google_app_id" translatable="false">123</string>
</resources>