uiscrollview

问题 I'm working on a component that is a subclass from UIView and contains a UIScrollView. When scrolling, I noticed different behaviors depending on which SDK I build with. On iOS 4 the layoutSubviews message is send on the scroll view's superview (which is my component) but on iOS 5 it seems that the message is not send anymore... After taking a look at the iOS 5 release notes and changelog, I did not find any mention of such a change. Did I miss somethin? 回答1: In iOS5, layoutSubviews is not

问题 I can't press any other buttons in the same window while UIScrollView is zooming with a pinch gesture or scrolling. Is there any way to enable this behavior? It's exactly like the scroll view has exclusive touch (though I tried setting it explicitly to NO ). I have a scroll view inside a view, and I would like it to scroll only while the user holds a scroll button. Otherwise, panning with one finger enables freehand drawing. 回答1: As noted in the comments, the answer was that I foolishly had a

问题 I have a problem with two infinite UIScrollViews which do not change their offsets properly. An item in the first UIScrollView corresponds with another one in the second. Then, I want to put the clicked item in the second place and animate the change in both UIScrollView. To get this done properly, I use this two methods: When item is clicked: - (void)click:(id)sender { NSInteger index = [[self cells] indexOfObject:sender]; if (index == 1) { CategoriesViewController *viewController = [

问题 I've got a really strange bug in my project. I've got a UIScrollView as my main, big view. Inside of it, I have a UIViewController (not UITableViewController ) which has a UITableView instance variable, as well as some miscellaneous UIButtons . I have set the view controller's view frame to CGRectMake(0, 64, 320, 388) , as I have a tab bar above it (this is not functional yet). At first it works great and looks great, but once I present and dismiss a modalViewController (thus reloading the

问题 I am trying to create a UIScrollView programatically. I set a property and synthesize it. @property (weak, nonatomic) IBOutlet UIScrollView *topScrollView; @synthesize topScrollView; I then have a method that does this. [topScrollView setFrame:CGRectMake(320, 0, 320, 65)]; [topScrollView setContentSize:CGSizeMake(500, 100)]; [topScrollView setBackgroundColor:[UIColor greenColor]]; [topScrollView setScrollEnabled:YES]; [topScrollView setShowsHorizontalScrollIndicator:YES]; [topScrollView

问题 I am using the following code to try and display an image in a UIScrollView. [self.jarView addSubview:imgView]; It does not work. However, it works when I add the subview to my normal view. My UIScrollView is called jarView and imgView is a UIImageView. Thanks 回答1: This works fine for me: UIScrollView *scrollview; scrollview= [[UIScrollView alloc] initWithFrame:CGRectMake(,,,)];// set scroll view size view = [[UIView alloc] initWithFrame:CGRectMake(y1,x1,y2,x2)]; //set the view size UIImage

问题 I'm struggling with UIScrollView for a while now. "descriptionLabel" and "genresLabel" will increase height during runtime and the gap to actors will increase. So i need the scrolling functionality here to see the actors label. I set the height of the contentView as a height-constraint equal to View with priority 250 and hoped that the height will increase automatically if needed. In fact nothing happens and no scrolling is possible. How can i automatically increase the contentView height in

问题 Im making use of this code to align a load of truckDayScrollViews (Subclass of UIScrollView) horizontally in a UITableView, SUDaysForTruckView is just a custom UILabel -(void)scrollViewDidScroll:(UIScrollView *)scrollView { if ([scrollView isKindOfClass:[SUDaysForTruckView class]]) { CGPoint offset=CGPointMake(scrollView.contentOffset.x, 0); for (TruckViewCell *cell in self.tableView.visibleCells) { cell.truckDayScrollView.contentOffset=offset; } self.headerView.contentOffset=offset; self

问题 UIScrollView scrolls Horizontally and UITableView scrolls vertically inside that but unable to load different data when scroll horizontally. have one scrollview which scrolls horizontally on screen and inside of that i have added multiple tableview and want to display different different datas on tableview when swipe. i have tried this but with no luck :( NSArray *arr1 = [[NSArray alloc] initWithObjects:@"1",@"2",@"3", nil]; NSArray *arr2 = [[NSArray alloc] initWithObjects:@"4",@"5",@"6", nil

问题 I have a UIView with height of 100 pixels that's on top of my UITableView. When I scroll up I want the UIView to scroll together with my UITableView as if it's part it. When 50 pixels of my UIView is hidden from scrolling up, I want to pin the UIView at the top while I continue scrolling up. How can this be achieved? I tried using changing my UIView's top NSLayoutConstraint constant equal to my tableview's content offset, but they don't scroll at the same speed. 回答1: First make sure your