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

In my case (Google Drive REST API v3), ProGuard was the culprit, as the code was working fine in debug mode.

Just adding -keep class com.google.** { *;} to ProGuard rules got rid of the issue.

PS: I had to call requestEmail() but I did not ask for any GET_ACCOUNTS permission.