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POUIScrollVIew only showing first static subview, delegate of UIPageControl
 

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    <p>I am a newbie of IOS development, my problem is I am using UIScrollView and UIPageControl to show guide info to users. I created a xib file related to <strong>GuideViewController</strong> via setting up <strong>File's Owner</strong>. I setup the content size and statically add subviews in xib files. But I encountered some strange thing, scrollview only shows the first subview on screen, all following display is just white background (when I scrolling). Following is the code:</p> <pre><code>- (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view from its nib. NSInteger numberOfPages = 2; self.pageControl.numberOfPages = numberOfPages; self.pageControl.currentPage = 0; self.pageScroll.delegate = self; self.pageScroll.contentSize = CGSizeMake(self.view.frame.size.width * numberOfPages, self.view.frame.size.height); self.pageControl.currentPageIndicatorTintColor = [UIColor redColor]; } -(void)scrollViewDidScroll:(UIScrollView *)scrollView { CGFloat pageWidth = self.view.frame.size.width; int page = floor((scrollView.contentOffset.x - pageWidth/2) / pageWidth) + 1; self.pageControl.currentPage = page; } </code></pre> <p>I googled a lot to find the answer but still stuck here. I am also confused by this sentence <strong>"When a user taps a page control to move to the next or previous page, the control sends the UIControlEventValueChanged event for handling by the delegate"</strong> in xcode help. It seems UIPageControl has no delegate attribute,so how I can capture the <strong>UIControlEventValueChanged</strong> event.</p> <p>Actually I am developing my main UI on storyboard, but I kind of want separate UI design to make more space for storyboard, so i use xib file for some other part UI, I do not know whether this will cause some problems. Thanks</p>
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    1. USzhouwubai
    1. USzhouwubai
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    1. COI solved first issue already, I thought UIScrollView will arrange subviews for me, but I turned out I need to set subview's origin myself.
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    2. COJust awnser your question by yourself. Thank you.
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      1. USMasterRazer
    3. CO@MasterRazer But how about the delegate issue. There is no delegate attribute for UIPageControl, how I capture UIControlEventValueChanged event. Thanks. I am still googling that. :)
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