uiscrollview

问题 I have a tab bar item with a UIScrollView and all the code works. I link the UIScrollView IBOutlet in IB to a UIScrollView I placed in my View. When I run the app and select the tab bar item I get the following error. Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[ setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key scrollView.' I have no idea what this is. When I disconnect the ScrollView IBOutlet, then there is no crash. Thanks

问题 I have a view controller with following layout: Container View UIScrollView UITableView as a sub view of a UIScrollView I have another UITableViewController in which I have a few rows and some methods when the row gets selected. Now I want to display this UITableview inside the UIScrollView . So I add the UITableView as a subview of UIScrollView . The table is displayed in the scroll view just fine, but when I tap in the scroll view to select the table's row, then row is being highlighted but

问题 I'm trying to use a UIStackView within a UIScrollView and I was hoping someone could point me in the right direction in creating the right constraints because I can't figure out what the problem is. These are my constraints and ViewController structure. So DestCont is a UIView that has a fixed height and ContentCont should take up the rest of the space, which could be (and is) larger than the screen so it should be able to scroll. When I test it out in the simulator, I have the following

问题 I'm having trouble with UIScrollView and Constraints . I want to display a FAQ inside my application. This will include several questions and answers, with various length. It won't change after launch, so I handle everything directly in the storyboard. However, it has to work on different iPhone screen size (from iPhone 5 to iPhone 6 Plus). So what I'm trying to do is : UIView UIScrollView UIView (FAQ1) UILabel (Question 1) UITextView (Answer 1) UIView (FAQ2) UILabel (Question 2) UITextView

问题 I'm trying to figure out how much of the scroll view inside my UIPageViewController has been scrolled. I have the following code in the viewLoad that access the UIScrollView from UIPageViewController . for (UIView *view in self.pageViewController.view.subviews) { if ([view isKindOfClass:[UIScrollView class]]) { thisControl = (UIScrollView *)view; } } So once I have the UIScrollView, called thisControl I would like to print how much has been scrolled by doing something like this: NSLog (@

问题 I was trying to achieve the effect of having my text fade in and out to show there is more data in the UIScrollView in this post: UIScrollView, showing that there is more data by fading out text I could not get the CAGradientLayer to look right since my background isn't a simple black and white background and I couldn't get it to match and make it look like the text is fading. So I thought I'd try setting the alpha property inside the UIScrollView, or the UILabel's alpha inside the

问题 There is probably a simple solution to this problem that I'm missing, but I can't seem to find the cause. Problem: Every time I call setContentSize on my scroll view, it causes the entire scrollview frame to shift. Question: Why does its position reset every time setContentSize is called? and how do I get it to stop? Notes: The contentOffSet within the Scrollview is fine. It's the entire scrollview frame that jumps to its original position. The scroll view is meant to move up and down with a

问题 I have been trying to scroll and zoom a CALayer, specifically a CAShapeLayer, of several polygon paths. I added the CALayer to a UIScrollView which has successfully enabled scrolling around the CALayer. However, pinch to zoom is not working. Several tutorials have implemented zooming a UIImageView with the UIScrollViewDelegate essentially like so: @IBOutlet var scrollView : UIScrollView! var imageView = UIImageView() scrollView.addSubview(imageView) func viewForZoomingInScrollView(scrollView:

问题 I have two UITableViews on one view controller (view controller is their delegate). One of them will be depending on scrollViewWillEndDragging:withVelocity:targetContentOffset: (I want to do some kind of custom pagination). The other one have pagingEnabled property set to YES and when I try to scroll it for the first time XCode gives me warning 2012-09-07 16:46:39.672 test[17393:707] Stop offset can not be modified for paging scroll views even though the code of the method is at the moment: -

问题 I am struggling with UIScrollView and AutoLayout. I read a blog and tried to do my own stuff. However, Xcode is reporting ambiguous content size. I setup the scrollview and leading, trailing, top, bottom constraints to 0 from super view. There is a UIView as container to hold all of my sub views, including two UILabel elements and two UICollectionView views. I set the container view as equal width and equal height with the View controller's view. Then I set the UILabel and UICollectionView