是否可以检查用户是否在iOS 5的内置Twitter应用程序中拥有Twitter帐户？

问题描述

iOS 5具有深度的Twitter集成。如何检查用户是否在内置的Twitter应用程序中有一个帐户（意味着他使用它），然后执行 UIApplication openURL：来触发关注用户或预编写推文？

iOS 5 has deep twitter integration. How can I check if the user has an account in the built-in twitter app (meaning he uses it), and then do a UIApplication openURL: to trigger following a user or pre-composing a tweet?

根据是可能的。 Twitter框架如何调用？

According to this site it is possible. How's that Twitter Framework called?

推荐答案

试试这个：

- (void)tweetButtonPressed:(id)sender
{
     Class tweetComposer = NSClassFromString(@"TWTweetComposeViewController");

     if( tweetComposer != nil ) {   

         if( [TWTweetComposeViewController canSendTweet] ) {
            TWTweetComposeViewController *tweetViewController = [[TWTweetComposeViewController alloc] init];

            [tweetViewController setInitialText:@"This is a test."];  // set your initial text

            tweetViewController.completionHandler = ^(TWTweetComposeViewControllerResult result) {
                if( result == TWTweetComposeViewControllerResultDone ) 
                {
                    // user is done with composing
                } 
                else if( result == TWTweetComposeViewControllerResultCancelled ) 
                {
                    // user has cancelled composing
                }
                [self dismissViewControllerAnimated:YES completion:nil];
            };

            [self presentViewController:tweetViewController animated:YES completion:nil];
        } 
        else {
             // The user has no account setup
        }
    }   
    else {
        // no Twitter integration
    }
}

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