objective-c - 在 ViewController 上子类化 UIScrollView PerformSegue

Question

我有一个自定义 UIScrollView 类，它实现 TouchsEnded 方法。我的项目有一个 Storyboard，我试图在 View Controller 上调用 PerformSeguewithIdentifier，但是当我调用方法 changePhoto 时，它给出了以下错误。我已经验证我的 segue 标签正确，没有拼写错误。看起来当我创建 PhotoViewController 的新实例时，它不会创建任何 Storyboard和/或转场。我可以做什么来调用以使 Segue 从 UIScrollView 正常工作？

自定义UIScrollView.m

-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{

    UITouch *touch = [touches anyObject];

    if ([[touch view] isKindOfClass:[UIImageView class]]) {
        UIView *imageView = [touch view];
        NSInteger tag = imageView.tag;
        NSLog(@"Tag: %d", tag);
        PhotoViewController *vc = [[PhotoViewController alloc]init];
        [vc changePhoto:1];
    }
}

PhotoViewController.m

-(void)changePhoto:(int)spaceId {
    [self performSegueWithIdentifier: @"photoSegue" sender: self];
}

错误:

2012-10-09 10:28:38.765 Spaces[82945:11303] * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Receiver () has no segue with identifier 'photoSegue''

Answer 1

尝试用这个初始化你的 View Controller

PhotoViewController *vc = [self.storyboard instantiateViewControllerWithIdentifier:@"myIdentifier"]

请务必在界面构建器中设置相应 View Controller 的标识符。