Question

使用UIScrollView时我遇到一些问题。创建它，设置一些属性，并使用主视图指向这个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;

但我想将scrollScreenView添加为子视图[self.view addSubview：scrollScreenView]。但通过这种方式我不能滚动我的观点，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高度等于滚动视图contentSize，我认为这是问题所在。使框架等于self.view并设置内容大小，如下所示：试试以下。

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];

Answer 2

我认为你应该替换

行

self.view = scrollScreenView;

为行

[self.view addSubview：scrollScreenView]

Answer 3

Autolayout在视图加载后设置了一些约束，因此，只需将内容大小放入 viewDidAppear，你的代码不会被重写。

这对我有用。

-(void)viewDidAppear:(BOOL)animated{
  [self.scrollView setContentSize:CGSizeMake(320, 1000)];
}

抱歉我的英语不好。

UIScrollView停止工作添加子视图

3 个答案: