Hi All,

I am trying to use OAuth2.0 authentication in iOS client. 
For this, I have created one clientID for iOS app in Google Developer 
Consol. This generated the ClientID and iOS redirect URI.

With the help of GTMOAuth2ViewControllerTouch, I am trying to get access 
token of the User. Below is the code:-

GTMOAuth2ViewControllerTouch *viewController;

        viewController = [[GTMOAuth2ViewControllerTouch alloc] initWithScope
:scope

                                                                    clientID
:kMyClientID

                                                                clientSecret
:kMyClientSecret

                                                            keychainItemName
:kKeychainItemName

                                                                    delegate
:self

                                                            finishedSelector
:@selector(viewController:finishedWithAuth:error:)];

        

        [self presentModalViewController:viewController
                                animated:YES];


- (void)viewController:(GTMOAuth2ViewControllerTouch *)viewController

      finishedWithAuth:(GTMOAuth2Authentication *)auth

                 error:(NSError *)error {

    [self dismissModalViewControllerAnimated:YES];

    

    if (error != nil) {

        // Authentication failed

        NSLog(@"error description%@",error.description);

        

    } else {

        // Authentication succeeded

        signedIn = true;

        [[self domainService] setAuthorizer:auth];

         auth.authorizationTokenKey = @"id_token";

         NSLog(@"\n accessToken value is %@",auth.accessToken);

        [self showEnterPinDialogue:auth.userEmail isConfirmEnable:true];

    }
}  

Now, I am getting error during signin process is "redirect_uri_mismatch". 

After this, I generated new ClientID with category "Others App" . This step 
results in the generation of ClientID and ClientSecret. Now I had used this 
ClientID in the project and google Sign In is successful. 


Please explain me, Why clientID for Ios client not worked but for "others" 
its working.

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