uiscrollview

问题 I’m trying to develop an app that uses 3 different view controllers on the first tab. I have 3 options: 1 - embed the view controllers in an uipageviewcontroller 2 - embed the view controllers in a uiscrollview 3 - use containers controlled by a uisegmentedcontroller - with hidden property true or false… Each of these viewcontrollers are using collectionviews to present photos downloaded asynch from a remote server. Using 3, the photos from all view controllers, loads at the same time, so,

问题 I have a scrollview on my view in that i have all the sub views as shown bellow UIView Scroll View 1.ImageView 2.Table view 3.Text View √√ To move the scroll view when keyboard appears / dismiss I have implemented logic in textview delegate metods as follows √√ - (void)textViewDidBeginEditing:(UITextView *)textView; { //To move the view down [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDelegate:self]; [UIView setAnimationDuration:0.3]; [UIView

问题 I have a scrollview on my view in that i have all the sub views as shown bellow UIView Scroll View 1.ImageView 2.Table view 3.Text View √√ To move the scroll view when keyboard appears / dismiss I have implemented logic in textview delegate metods as follows √√ - (void)textViewDidBeginEditing:(UITextView *)textView; { //To move the view down [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDelegate:self]; [UIView setAnimationDuration:0.3]; [UIView

问题 Hi in my app i want to show label text different at each image in UIScrollView. Here is my code. for (int i=0; i<imageArray.count; i++) { NSString *str = [imageArray objectAtIndex:i]; NSString *bannerImageURL = [NSString stringWithFormat:@"http://url.com", str]; CGFloat myOrigin = i * self.view.frame.size.width; UIImageView *myImageView = [[UIImageView alloc] initWithFrame:CGRectMake(myOrigin, 0, self.view.frame.size.width,imgScrollView.frame.size.height)]; myImageView.contentMode =

问题 I'm trying to work on optimizing my app for landscape and smaller screens. I'm mostly using scroll views to achieve this. In one of my views I have a container view. This container view looks perfect when I toggle between devices in the storyboard. The container view is mapped to a view controller that has a scroll view that has top, bottom, leading, and trailing space set to superview 0. So it should fill the container. The actual view controller is set to Freeform Simulated Size with a

问题 I'm using a UIPageViewController to swipe through a series of viewcontrollers. I'd like the background of the parent viewcontroller to smoothly transition between colors when swiping, based on the position of the scroll between views. I was hoping UIPageViewController would have a delegate method similar to scrollViewDidScroll with the position, but it doesn't seem to. Is there an alternate method or similar method to expose the position of the swipe as it occurs/changes? EDIT : Since

问题 I'm using a UIPageViewController to swipe through a series of viewcontrollers. I'd like the background of the parent viewcontroller to smoothly transition between colors when swiping, based on the position of the scroll between views. I was hoping UIPageViewController would have a delegate method similar to scrollViewDidScroll with the position, but it doesn't seem to. Is there an alternate method or similar method to expose the position of the swipe as it occurs/changes? EDIT : Since

问题 In my view I have a picture.. The picture has a 3:2 scale and is huge, resolution wise. I'm having a lot of trouble initializing a UIImage with the image to the original size and then zooming out of the UIImageView so that the entire image is visible within the scrollview. The program stays only in the portrait orientation. And no, please don't say to just use UIWebView. UIWebView doesn't let me set the content size during view load...instead, it just zooms out of the image by some arbitrary

问题 I know there is a property or method that makes the scrollview/uiview call drawRect: method while is scrolling. By default is disabled because of performance reasons but I need to enable it. I cannot remember the name of the method hence I cannot look for it, anyone who knows what I am looking for? Thanks in advance 回答1: I'ld suggest to use the scrollViewDidScroll:-method and then redraw the view. - (void)scrollViewDidScroll:(UIScrollView *)scrollView { [someView setNeedsDisplay]; } 来源： https

问题 So I've created a 3x10 grid of sprites, that go off the bottom edge of the screen. I've added a UIScrollView, and the scroll indicators appear, but no movement actually occurs. Here's the code: import SpriteKit var buyButton = SKSpriteNode() var pic = SKTexture(imageNamed: "Button") class GameScene: SKScene, UIScrollViewDelegate { var scrollView = UIScrollView() var scrollFrame = CGRect!() override func didMoveToView(view: SKView) { /* Setup your scene here */ print(self.frame.size.width)