uiimageview

问题 HTML Content Example : This is HTML Content.<div>This is <b>BOLD</b> text </div><div>This is <i> ITALIC </i> text</div> This is the HTML content which I want to render and place it in a UIImageView and then save this image. I tried to first render that HTML content and generated a PDF and then convert that PDF into Image but that image is of very bad result. So that's why I am finding some thing that render my HTML content and add into UIImageVIew and than I will easily save that image inside

问题 My big picture goal is to have a grey field over an image, and then as the user rubs on that grey field, it reveals the image underneath. Basically like a lottery scratcher card. I've done a bunch of searching through the docs, as well as this site, but can't find the solution. The following is just a proof of concept to test "erasing" an image based on where the user touches, but it isn't working. :( I have a UIView that detects touches, then sends the coords of the move to the

问题 An application contains a UITableView containing a custom UITableViewCell. The cell in turn contains a UIImageView. The problem is that setting the image in cellForRowAtIndexPath makes the image take up the entire UITableViewCell area: - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { CustomCell *cell = [self.tableView dequeueReusableCellWithIdentifier:@"CustomCell"]; NSString *path = [[NSBundle mainBundle] pathForResource:@"bigrect"

问题 How do I create a copy of an UIImageView instance that can be manipulated independently of the first instance? I've tried UIImageView *tempCopy = [instance copy] but it crashes. Is there another way? 回答1: It probably crashes because UIImageView doesn't conform to the NSCopying protocol. So do it yourself: instantiate a new UIImageView and set any property from your original that you find of interest. 回答2: UIImageView doesn't conform to NSCopying , but it does conform to NSCoding . Archive

问题 Very strange behavior, there is a round dot in the center of the screen using this code, and a UIScrollview with nothing inside in a nib. I expect that UIScrollview should be empty. The dot blurs and disappears when I scroll the screen. - (void)viewDidLoad { [super viewDidLoad]; NSArray *subviews = [closetScroll subviews]; UIImageView *strange=[subviews objectAtIndex:0]; strange.center = CGPointMake([[UIScreen mainScreen] bounds].size.width/2, [[UIScreen mainScreen] bounds].size.height/2);

问题 I'm trying to set a large image that reveal more as the table view pulled further down,.. I know I'm not making any sense, it's easier to show an example I recorded from netbot. Please let me know what the proper term for that and I'll update the title. ( Update: apparently it's called parallax effect) I've tried setting UIImageView to self.tableView.backgroundView and add transparent header for the first section. But it doesn't have the same feeling. it reveals from the top of the image

问题 I'm trying to set a large image that reveal more as the table view pulled further down,.. I know I'm not making any sense, it's easier to show an example I recorded from netbot. Please let me know what the proper term for that and I'll update the title. ( Update: apparently it's called parallax effect) I've tried setting UIImageView to self.tableView.backgroundView and add transparent header for the first section. But it doesn't have the same feeling. it reveals from the top of the image

问题 Long story short, I'm trying to build functionality similar to Photos.app. I have a UIScrollView with a UIImageView inside of it set up in the Storyboard. Zooming works, but I'm having trouble keeping it centered. In all my frame based scroll view implementations I've centered it as follows, which works beautifully: - (void)scrollViewDidZoom:(UIScrollView *)scrollView { CGRect newImageViewFrame = self.imageView.frame; // Center horizontally if (newImageViewFrame.size.width < CGRectGetWidth

问题 If I have an UIImageView with the mode set to center for example how can I change it to something else such as aspect fit with code? 回答1: imageView.contentMode = UIViewContentModeScaleAspectFit; 回答2: yourImageView.contentMode = UIViewContentModeScaleAspectFit; you can set it to any of the following UIViewContentModeScaleToFill, UIViewContentModeScaleAspectFit, UIViewContentModeScaleAspectFill, UIViewContentModeRedraw, UIViewContentModeCenter, UIViewContentModeTop, UIViewContentModeBottom,

问题 I am designing an application where a user places multiple UIImageViews one over another. When the user decides to save this to photo album, I have to combine all these UIImageViews and save it to Photo Library. While combining them I need to preserve their positions, resolutions, zorder. The approach I tried I was to have a parent UIView which acts like a container. The user places all the UIImageViews inside this UIView. While saving, I take a screenshot of the UIView and save it. Although