Question

How can I check that I can make a TWRequest on Twitter for iOS5 since I don’t have an access token in place? With the regular twitter REST API using frameworks such as MGTwitterEngine we can do a check for the access token.

Answer 1

You don’t need it. In iOS5 you just need to put the username and pwd in iOS settings. You just need to use the TWTweetComposeViewController and manage its callback block (completitionHandler) correctly. In the block you receive statuses about the operation.

TWTweetComposeViewControllerResult Possible values for the result parameter of the completionHandler property.

enum TWTweetComposeViewControllerResult {
    TWTweetComposeViewControllerResultCancelled,
    TWTweetComposeViewControllerResultDone };
 typedef enum TWTweetComposeViewControllerResult TWTweetComposeViewControllerResult;

If need to know if you can send tweet just use the class method + (BOOL)canSendTweet of the class TWTweetComposeViewController .
If you need more control you can use the TWRequest instead of the TWTweetComposeViewController.
Check here: https://developer.apple.com/library/ios/#documentation/Twitter/Reference/TwitterFrameworkReference/_index.html