我使用下面的代码通过twitter分享内容(来自UITextView，UIImageView)-(void)shareViaTweet:(NSString*)shareMessage{if([SLComposeViewControllerisAvailableForServiceType:SLServiceTypeTwitter]){SLComposeViewController*tweetSheet=[SLComposeViewControllercomposeViewControllerForServiceType:SLServiceTypeTwitter];[tweetSheet