Facebook和Twitter分享按钮停止工作

Question

最近我有它的工作，但现在它只是停了下来。按下按钮时不做任何操作。代码甚至不会给出断点或错误。哪里不对？

Download Project (3.2mb)

- (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，你的第一个场景都有其类设置为ViewController，但在实际上却显然应列入你的项目，例如中的一个类Tab1_ViewController。