ios - UIScrollView 停止工作添加 subview

Question

我在使用 UIScrollView.i 时遇到一些问题。我创建它，设置一些属性，并使用主视图指向此 UIScrollView.See:

scrollWidth = 320.0;
scrollHeight = 410 * listRegisterPeople.count;
scrollScreenView = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, scrollWidth,    scrollHeight)];
[scrollScreenView setScrollEnabled:YES];
[scrollScreenView setContentSize:CGSizeMake(scrollWidth, 410 * list.count)];
[scrollScreenView setShowsVerticalScrollIndicator:YES];
[scrollScreenView setShowsHorizontalScrollIndicator:YES];
[scrollScreenView setPagingEnabled:NO];
scrollScreenView.delegate = self;
[scrollScreenView setContentOffset:CGPointMake(0, 0)];
self.view = scrollScreenView;

但我想添加scrollScreenView作为 subview [self.view addSubview:scrollScreenView]。但通过这种方式我无法滚动我的 View ，我不知道为什么。 . .

如何解决？

Answer 1

如果ScrollView的框架大于或等于内容大小，则不会滚动。您的 ScrollView 高度等于 ScrollView contentSize ，我认为这就是问题所在。使框架等于 self.view 并设置内容大小，如下所示:尝试以下操作。

scrollWidth = 320.0;
scrollHeight = 410 * listRegisterPeople.count;
scrollScreenView = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, 320,self.view.frame.size.height)];
[scrollScreenView setScrollEnabled:YES];
[scrollScreenView setContentSize:CGSizeMake(scrollWidth, scrollHeight)];
[scrollScreenView setShowsVerticalScrollIndicator:YES];
[scrollScreenView setShowsHorizontalScrollIndicator:YES];
[scrollScreenView setPagingEnabled:NO];
scrollScreenView.delegate = self;
[scrollScreenView setContentOffset:CGPointMake(0, 0)];
[self.view addSubview:scrollScreenView];