Google 400 Error: invalid request Custom scheme UR

Question

When I am signing into Gmail in my iOS App, I am getting the below error (screenshot) and the sign-in fields do not appear. We are loading the sign-in screen in a WKWebView.

• We are using a custom URI redirect but why is google throwing this error now. What are the alternatives to a custom URI?
• Swift 2.3 project
• Using OAuthSwift v0.6.0 cocoapod
• This started quite recently only in the past week or so I believe something changed with Google's APIs.

I have read that google is deprecating webviews for OAuth and will block requests on April 20, 2017. As seen here in a Google Developers Blog: https://developers.googleblog.com/2016/08/modernizing-oauth-interactions-in-native-apps.html

Does this mean I already need to use or is there another viable solution? I thought I had more time before needing to update this.

Answer 1

I have solved the problems by create project in Fire Base Because REVERSED_CLIENT_ID generate from developers.google.com Incorrect. Try create your project in FireBase https://console.firebase.google.com

Answer 2

you must cross check clientId at your 'Google Dashboard' clientId and clientId at "GoogleProject.Plsit".if both are different, copy ClientID from 'Google Dashboard' and paste it on "GoogleService-Info.Plsit".and also amend your reverseClientId in "GoogleService-Info.Plsit" according to newly pasted ClientID(you check the pattern how reverseClientId created from client Id in "GoogleService-Info.Plsit"). And then paste thid reverseClientId in 'URL type' in your project setting.

In case of mine clientId on "GoogleService-Info.Plsit" and my 'Google Dashboard' were different. chech your google dashboard here : https://console.developers.google.com/apis/credentials?project=firebase

Answer 3

My guess is that your client is registered incorrectly in Google Cloud Console. A 'WEB' client is typically a server or Javascript application. An iOS app should be registered as an iOS client.

https://developers.google.com/identity/protocols/OAuth2InstalledApp#creatingcred

Answer 4

I just experienced this issue following the Google Signin for iOS Guide. The plist generated file is not the good one. You need to take a look at the clientID and reversedClientID and be sure that they are the ones for the iOS app on your Google developer portal.

Answer 5

I Just found this problem too.
Please check google developer console and look at the credentials keys
Your Client ID in google-info plist must come from iOS application, not the web.
And use that Client ID to be revereseClientID and copy it in to URI type

Answer 6

I faced this error after previously creating a GoogleService-Info.plist file using the site Google Sign In directs you to. I later started using Firebase, which seems to create a separate .plist file. After attempting to include Firebase's new .plist file, my Google Sign In button started yielding the invalid_request error with the Custom scheme URIs are not allowed for WEB client type message.

In order to fix the problem I tried many things, but in the end deleting MY ENTIRE Firebase project on their web console (not just the individual app), recreating a new Firebase project from scratch, and re-downloading the new .plist file, solved the error.