问题：无法将NSUInteger从一个ViewController传递到另一个ViewController

Question

我想从ViewController传递一个数字给TweetViewController。一切工作正常，我NSUInteger做到了财产（randomNumber和tweetNumber）：

TweetViewController *Second = [[TweetViewController alloc] initWithNibName:nil bundle:nil]; 
    Second.tweetNumber = randomNumber; 
    Second.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal; 
    [self presentModalViewController:Second animated:YES]; 
    [Second release]; 

我现在已经改变了我的代码，因为我不希望只有我TweetViewVontroller被加载。我想要在Tweet-和InfoViewController之间进行主屏幕滑动。我使用一个SwitchViewController，它将加载而不是TweetViewController。该SwitchViewController看起来是这样的（窗口1/2的UIViewController）：

UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0,0,320,460)]; 
UIView *contentView = [[UIView alloc] initWithFrame:CGRectMake(0,0,640,460)]; 

self.window1 = [TweetViewController alloc]; 
self.window2 = [InfoViewController alloc]; 


[contentView addSubview:self.window1.view]; 

CGRect f = self.window2.view.frame; 
f.origin.x = 320; 
self.window2.view.frame = f; 

[contentView addSubview:self.window2.view]; 


[scrollView addSubview:contentView]; 
scrollView.contentSize = contentView.frame.size; 

scrollView.pagingEnabled = YES; 

self.view = scrollView; 

[contentView release]; 
[scrollView release]; 

现在我不能从FirstViewController到TweetViewController经过数。任何想法，如何解决问题？

Answer 1

window1.tweetNumber = randomNumber; 

如果你想在每次滚动scrollview时更新它，你可能需要查看UIScrollViewDelegate协议。特别是scrollViewWillBeginDragging: