Facebook＆amp; Twitter分享按钮停止工作

Question

最近我有它工作，但现在它突然停止了。按下按钮时按钮不执行任何操作。代码甚至没有给出断点或错误。有什么问题？

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

在您的故事板中，您的第一个场景的类别设置为ViewController，但实际上它应该是您项目中包含的类之一，例如Tab1_ViewController。