UITableView 中的 UIScrollView 和 UIPageControl [英] UIScrollView and UIPageControl within UITableView

问题描述

我看到很多消息来源说可以在 UITableViewCell 中包含带有 UIPageControl 的 UIScrollView 以便能够水平滚动(通过可选图像列表)，但找不到任何可以满足我要求的原始示例.我的滚动视图工作"了，但我不确定如何继续 - 希望有人可以给我一些指导.

I've seen lots of sources saying it is possible to include a UIScrollView with UIPageControl inside a UITableViewCell to be able to scroll horizontally (through a list of selectable images), but can't find any raw examples that does what I want. I've gotten my scroll view "working", but I am unsure how to go forward - hopefully someone can send me some guidance.

在我的 cellForRowAtIndexPath 中，我创建了一个单元格，并将 scrollView 和 pageControl 添加为子视图.

Within my cellForRowAtIndexPath, I create a cell, and add both a scrollView and pageControl as subviews.

UITableViewCell *cell = [self.challengeListView dequeueReusableCellWithIdentifier:SubmitChallengeCellIdentifier];
    if(cell == nil){
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:SubmitChallengeCellIdentifier] autorelease];
        cell.frame = CGRectMake(0, 0, 1000, 50);
    }   

    scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, tv.frame.size.width, 50)];
    [scrollView setContentSize:CGSizeMake(1000, 50)];
    [[cell contentView] addSubview:scrollView];

    pageControl = [[UIPageControl alloc] initWithFrame:CGRectMake(0, 50, tv.frame.size.width, 50)];
    [pageControl setNumberOfPages:4];
    [[cell contentView] addSubview:pageControl];

我附上了正在显示的屏幕截图

I've attached a screenshot of what's being displayed

主视图的底部是我的 UITableView，其中包含 scrollView/pageControl(它会水平滚动，因为我可以看到 scrollerIndicator 显示了这一点)，我将它的方法设置为以下:

the bottom portion of the main view is my UITableView that contains the scrollView/pageControl (and it will scroll horizontally, as I can see the scrollerIndicator showing this), and I've got its method's set to the following:

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return 1;
}

-(NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{   
    return 1;
}   

我的滚动视图将显示horizo​​ntalScroller"，我可以来回滚动，但显然那里没有内容.如何使用可点击"图像列表填充 tableView/scrollView?任何方向都将不胜感激 - 最好不是嘿，这家伙做的有点相似，看看这个链接"，但也许更多的是解释如何正确实现这个功能(E特别是关于iOS 3.0+ - 据我了解，Apple 在实现这一点时让我们的生活变得更轻松)

My Scroll view will indicate a "horizontalScroller" and I am able to scroll back and forth, but obviously there's no content there. How do I go about populating the tableView/scrollView with say, a list of "clickable" images? Any direction would be greatly appreciated - preferably not a "hey this guy's done it somewhat similar, check out this link" but maybe more an explanation of how this functionality should be implemented correctly (ESPECIALLY in regards to iOS 3.0+ - it is my understanding Apple has made our lives easier in implementing this)

推荐答案

我已经解决了自己的问题；也许没有一次回答我的原因是因为一旦你了解了每个视图的目的，它就是一个次要的实现.

I've solved my own problem; maybe the reason no once answered me is because its a minor implementation once you understand each view's purpose.

从 cellForRowAtIndexPath: 内我创建了一个标准的 UITableViewCell，但是我将单元格的框架更改为我自己的 1000 宽 x 50 高的自定义框架(满足我对项目的需要).

From within cellForRowAtIndexPath: I created a standard UITableViewCell, however I altered the frame of the cell to my own custom frame of 1000 width by 50 height (catered to my needs for project).

然后我创建了一个 UIScrollView，将其设置为以下内容(请记住，我在 IB 中定义了我的 tableView，因此我将我的一些高度/宽度映射到这些值):

I then created a UIScrollView, set it to the following (keep in mind I have my tableView defined in IB, so I'm mapping some of my height/widths to those values):

scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, tv.frame.size.width, 78)];

然后我创建所需的图像视图(我意识到接下来我将创建一个循环来处理许多图像并将它们布置在滚动视图中):

I then create the desired image view (I realize I will next create a loop that does many images and lays them out across the scroll view):

UIImage *image = [UIImage imageNamed:@"dummy.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
imageView.frame = CGRectMake(0, 0, 80, 78);
[scrollView addSubview: imageView];

这是我缺少的部分.将 scrollView 添加到单元格内容后，您需要使用 UIPageControl (起初对我来说这个实现似乎并不明显)来设置实际的视觉水平滚动"效果:

Here's the part I was missing. After adding the scrollView to the cell contents, you need to use the UIPageControl (which didn't seem obvious to me for this implementation at first) to setup the actual "visual horizonal scrolling" affect:

   [[cell contentView] addSubview:scrollView];

pageControl = [[UIPageControl alloc] initWithFrame:CGRectMake(0, 50, tv.frame.size.width, 50)];
[pageControl setNumberOfPages:4];
[[cell contentView] addSubview:pageControl];

希望对某人的搜索有所帮助 - 我在 Google 上花了很长时间寻找我刚刚解释过的示例，但除了对其工作原理的一般概述之外没有太多运气.

Hope that helps someone's search - I spent quite some time on Google looking for the example I just explained and didn't have much luck other than the general overview of how it would work.

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