iOS: error message "[TwitterKit] did encounter error with message "Error obtaining user auth token.": Error Domain=TWTRLogInErrorDomain Code=-1 "

Question

I don't success to use the Twitter API connection in iOS with Objective-C. I use that codes:

[[Twitter sharedInstance] logInWithCompletion:^
 (TWTRSession *session, NSError *error) {
     if (session) {
         NSLog(@"");
     }}];

In my AppDelegate:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
//Twitter
    [[Twitter sharedInstance] startWithConsumerKey:@"z0F**************cg" consumerSecret:@"PJu*******************N6W"];

- (BOOL)application:(UIApplication *)app
            openURL:(NSURL *)url
            options:(NSDictionary<UIApplicationOpenURLOptionsKey, id> *)options {
        return [[Twitter sharedInstance] application:app openURL:url options:options];

    return NO;
}

I precise that openURL is never called.

I obtain several error message that I don't understand:

Error Domain=TWTRNetworkingErrorDomain Code=-1011 "Request failed: unauthorized (401)" UserInfo={NSLocalizedFailureReason=Twitter API error : <?xml version="1.0" encoding="UTF-8"?>
<hash>
  <error>Desktop applications only support the oauth_callback value 'oob'</error>
  <request>/oauth/request_token</request>
</hash>
 (code (null)), TWTRNetworkingStatusCode=401, NSErrorFailingURLKey=https://api.twitter.com/oauth/request_token, NSLocalizedDescription=Request failed: unauthorized (401)}

AND:

 [TwitterKit] did encounter error with message "Error obtaining user auth token.": Error Domain=TWTRLogInErrorDomain Code=-1 "<?xml version="1.0" encoding="UTF-8"?>
<hash>
  <error>Desktop applications only support the oauth_callback value 'oob'</error>
  <request>/oauth/request_token</request>
</hash>
" UserInfo={NSLocalizedDescription=<?xml version="1.0" encoding="UTF-8"?>
<hash>
  <error>Desktop applications only support the oauth_callback value 'oob'</error>
  <request>/oauth/request_token</request>
</hash>
}

It seems that it is not connected, I see a lot of things in Swift, but nothing in Objective-C.

Thanks in advance.

Answer 1

If you read the manual https://dev.twitter.com/twitterkit/ios/access-rest-api

Check that user is logged :

NSString *userID = [Twitter sharedInstance].sessionStore.session.userID;
        TWTRAPIClient *client = [[TWTRAPIClient alloc] initWithUserID:userID];

Add these lines:

 TWTRLogInButton *logInButton = [TWTRLogInButton buttonWithLogInCompletion:^(TWTRSession *session, NSError *error) {
        if (session) {
            NSLog(@"signed in as %@", [session userName]);
        } else {
            NSLog(@"error: %@", [error localizedDescription]);
        }
    }];
    logInButton.center = self.view.center;
    [self.view addSubview:logInButton];

For the image, if you check that, it will help you: Posting image to twitter using twitterkit

[self tweetImage: [UIImage imageNamed:@"buttonRenault.png"]];