Google Drive API - the name must not be empty: null (But I had passed valid account name to GoogleAccountCredential)

Question

Recently, I have Android code which accesses to Google Drive. I\'m using Google APIs Client Library for Java instead of Google Play services client

Answer 1

I use google api client

// Dependency of Google Api client
implementation 'com.google.api-client:google-api-client:1.30.9'
implementation 'com.google.api-client:google-api-client-android:1.30.9'
implementation 'com.google.apis:google-api-services-drive:v3-rev20200413-1.30.9'

GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                .requestScopes(new Scope(Scopes.DRIVE_APPFOLDER))
                //requestEmail required
                .requestEmail()
                .build();
GoogleSignInClient mGoogleSignInClient = GoogleSignIn.getClient(this, gso);


 // in onActivityResult method
 Task task = GoogleSignIn.getSignedInAccountFromIntent(data);
 GoogleSignInAccount account = completedTask.getResult(ApiException.class);
 // androidAccount will be null if no email
 android.accounts.Account androidAccount = account.getAccount(); 

You can see it from the source code of android.accounts.Account

  private String zag;
    @Field(
        id = 4,
        getter = "getEmail"
    )
    private String zah;

    @Nullable
    public Account getAccount() {
        // getEmail required
        return this.zah == null ? null : new Account(this.zah, "com.google");
    }