uiscrollview

问题 I have textboxes . When i click on it, the Keyboard pops out. but, since the uitextfield is located some where below, it gets covered when the keyboard pops out. (The keyboard gets displayed above the text field, so the user is unable to see it). I need a way to move the textfield up so that the user can see it. The iPhone facebook app has a workaround, they shrink the UIComponents on the view to display the textfield on top, so it doesn't cover from the keyboard. Can someone point me to a

问题 I have a UIWebView inside UIScrollView . This idea is to be able to create more reading space on screen when user scroll the webpage upwards - by scrolling the UIScrollView upwards till the toolbar is visible, and obviously when the toolbars is nomore visible actually scroll the webpage to show more content that's on the page. IPhone Safari browser does exactly the same functionality. see screenshot (first) for default behavior i am getting - i guess because : the scrolling message is

问题 I have a question how to add UIScrollView in UIView, so that the UIScrollView could work properly. UIScrollView *scroll = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, container.frame.size.width/2, container.frame.size.height/2)]; scroll.pagingEnabled = YES; scroll.scrollEnabled = YES; [scroll setBackgroundColor:[UIColor redColor]]; NSInteger numberOfViews = 3; for (int i = 0; i < numberOfViews; i++) { CGFloat xOrigin = i * container.frame.size.width/2; UIView *awesomeView = [[UIView

问题 I am using this wonderfully elegant piece of code Getting a screenshot of a UIScrollView, including offscreen parts to capture the entire contents of a UITableView to be exported to a UIImage. UIGraphicsBeginImageContextWithOptions(self.controller.tableView.contentSize, YES, 0); { CGPoint savedContentOffset = self.controller.tableView.contentOffset; CGRect savedFrame = self.controller.tableView.frame; self.controller.tableView.contentOffset = CGPointZero; self.controller.tableView.frame =

问题 You can add UIRefreshControl to UICollectionView (or any UIScrollView for that matter) by adding it to collection's subviews: UIRefreshControl *refreshControl = [[UIRefreshControl alloc] init]; [refreshControl addTarget:self action:@selector(handleRefresh:) forControlEvents:UIControlEventValueChanged]; [self.collectionView addSubview:refreshControl]; This doesn't work when collection view layout has UICollectionViewScrollDirectionHorizontal. I tried overriding layoutSubviews to put refresh

问题 I've searched and searched for a tutorial for this but none of them are what I'm looking for. I've tried Apple's sample but it is just colors and I don't know how to make it views. All I'm looking for is a screen that will page while showing the page control. Each time the scroll view pages i want it to show a completely different view. Not different text or images but a different view. A lot like the home screen of the iPhone or ESPN Scorecenter app. Please Help! Thank you. 回答1: I created

问题 I have a UIScrollView that is set to have a clear background. Part of the scrollview does have content, but part does not (so it shows other views behind it). I would like to be able to click through the UIScrollView and to the MKMapView behind, but only for the transparent portion of the UIScrollView. I have found some code which I am having a real hard time understanding how to get working: - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { if (![self

问题 I have created a storyboard based project. In one of the view controller's view requires some extra elements to be placed which results in increasing the view height such that the view must now be scrollable. Is it possible to simply change the class type of UIView to UIScrollView in storyboard? Will it really convert the top level UIView to UIScrollView ? Just looking for a quick and easy way of doing this without much changes. Thanks 回答1: You can open storyboard as an xml source code file,

问题 I have got all images of iphone using AssetsLibrary.I am passing UIImage object in imageview and display images in scrollview. There are more than 200 images in iphone and i have to display all images in scrollview vertically without use of paging.This takes lots of time to display images and it has also memory issues. Is there any code for lazy loading of iphone images in scrollview 回答1: I've been working on this recently and have checked out loads of example code on the web. None of it

问题 Backstory I have an iPad app that needs to allow the user to navigate through groups of images. Each group is laid out in its own vertical UIScrollView (paged) so the user can swipe up and down down to see each image. Each of the group UIScrollViews is placed in a single (only one exists in the app) outer horizontal UIScrollView (also paged). This works great.... I can swipe up and down to view the images in a group and swipe left and right to go to the next or previous group. Problem The