Android Google People API error: TokenResponseException: Missing parameter: code
问题 I've used up my way. I followed the tutorial(part 1 and 2) to use Google People API in my android project. It always hit an error saying parameter code is missing in the signed apk, and stucked at getting GoogleTokenResponse . It works fine in the debug version. What did I do wrong? And I have done all these: Changed SHA1 to released version. Replace downloaded google-services.json file downloaded from Firebase. Client ID and Client Secret using OAuth Client ID for web Invalidate caches