Facebook和Twitter分享button停止工作

最近我有这个工作，但现在只是停了下来。 按下button时不做任何操作。 这个代码甚至不会给出断点或错误。 哪里不对？

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- (IBAction)ShareFB { if ([SLComposeViewController isAvailableForServiceType:SLServiceTypeFacebook]) { slComposeViewController = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeFacebook]; [slComposeViewController addImage:[UIImage imageNamed:@"logo-carrito.png"]]; [slComposeViewController addURL:[NSURL URLWithString:@"http://www.google.com"]]; [self presentViewController:slComposeViewController animated:YES completion:NULL]; } else { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"No FB Account" message:@"There are no FB account registered. Configure one" delegate:nil cancelButtonTitle:@"Dissmiss" otherButtonTitles:nil]; [alert show]; } } - (IBAction)ShareTW { if ([SLComposeViewController isAvailableForServiceType:SLServiceTypeTwitter]) { slComposeViewController = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeTwitter]; [slComposeViewController addImage:[UIImage imageNamed:@"logo-carito.png"]]; [slComposeViewController addURL:[NSURL URLWithString:@"http://www.google.com"]]; [self presentViewController:slComposeViewController animated:YES completion:NULL]; } else { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"No TW Account" message:@"There are no TW accounts registered. Configure one." delegate:nil cancelButtonTitle:@"Dismiss" otherButtonTitles:nil]; [alert show]; } } 

Answer 1

在你的故事板中，你的第一个场景的类被设置为ViewController ，但实际上它应该是你的项目中包含的类之一，例如Tab1_ViewController 。