带有 UIButtons 的无限水平 UIScrollView

Posted 2023-03-16

【中文标题】带有 UIButtons 的无限水平 UIScrollView

【英文标题】：Infinite horizontal UIScrollView with UIButtons

【发布时间】：2013-08-12 06:46:00

【问题描述】：

这就是我目前所做的。

scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(56, 205, 400, 3000)];
scrollView.delegate = self;
scrollView.contentSize = CGSizeMake(scrollView.frame.size.width * 3.0f,scrollView.frame.size.height * 3.0f);
scrollView.maximumZoomScale = 3.0f;

UIView *zoomView = [[UIView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, scrollView.contentSize.width, scrollView.contentSize.height)];
zoomView.backgroundColor = [UIColor whiteColor];
for (NSInteger index = 0; index < 100; index++)

    UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    button.frame = CGRectMake((scrollView.frame.size.width / 2.0f) - 50.0f, 10.0f + (50.0f * (CGFloat)index), 100.0f, 30.0f);
    button.tag = index;
    [button setTitle:[NSString stringWithFormat:@"Button %ld", ((long)index + 1)] forState:UIControlStateNormal];
    [button addTarget:self action:@selector(didTapButton:) forControlEvents:UIControlEventTouchUpInside];

    [zoomView addSubview:button];


[scrollView addSubview:zoomView];
[self.view addSubview:scrollView];

问题是。它不是无限的。我希望数字 101 是数字 1，希望你能理解。我如何动态地创建它们，通过网络服务告诉我我将拥有多少按钮，我应该为每个按钮应用什么背景，以及在按钮下放置什么文本。上面的代码也是垂直滚动的，但最后它会是一个非缩放的水平滚动视图。提前致谢。

【问题讨论】：

你想滚动你的 UIScrollview 直到 zoomView 帧大小吗？

【参考方案1】：

只需设置滚动视图的内容大小

scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(56, 205, 400, 320)]; // it is for iphone. set it's resolution if you want to set it for ipad
scrollView.delegate = self;
scrollView.contentSize = CGSizeMake(scrollView.frame.size.width * 3.0f,scrollView.frame.size.height * 3.0f);
scrollView.maximumZoomScale = 3.0f;

UIView *zoomView = [[UIView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, scrollView.contentSize.width, scrollView.contentSize.height)];
zoomView.backgroundColor = [UIColor whiteColor];
for (NSInteger index = 0; index < 100; index++)

    UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    button.frame = CGRectMake((scrollView.frame.size.width / 2.0f) - 50.0f, 10.0f + (50.0f * (CGFloat)index), 100.0f, 30.0f);
    button.tag = index;
    [button setTitle:[NSString stringWithFormat:@"Button %ld", ((long)index + 1)] forState:UIControlStateNormal];
    [button addTarget:self action:@selector(didTapButton:) forControlEvents:UIControlEventTouchUpInside];

    [zoomView addSubview:button];


[scrollView addSubview:zoomView];
[self.view addSubview:scrollView];

scrollView.contentSize= CGSizeMake((zoomView.frame.size.width) , zoomView.frame.size.height);

在将缩放视图添加到滚动视图后设置它。 希望能帮助你理解。