uiimageview

问题 The examples I have seen are geared towards C#. Any tips would be appreciated. 回答1: UIImage* image = [UIImage imageWithData: [NSData dataFromBase64EncodedString: stringBase64]]; Hope it helps. I don't know what you mean by "multipage UIImageView". The NSData category providing the dataFromBase64EncodedString method is here or here. 来源： https://stackoverflow.com/questions/5890305/how-to-convert-a-base64-encoded-document-into-a-multipage-uiimageview-in-ios

问题 My goal is when I click on button to toggle contentMode: scaleAspectFit & scaleAspectFill with animation. @IBAction func toggleContentModeAction(_ sender: UIButton) { sender.isSelected = !sender.isSelected if sender.isSelected { UIView.animate(withDuration: 0.3) { self.popImageView.contentMode = .scaleAspectFit self.view.layoutIfNeeded() } }else { UIView.animate(withDuration: 0.3) { self.popImageView.contentMode = .scaleAspectFill self.view.layoutIfNeeded() } } } but no effective to my goal.

问题 I'm trying to add an image inside the navigation constroller and center it. So I do have an imageView and a UINavigationBar and I want to add the image view to that navigation bar and center it horizontally. The UINavigationBar comes from the UINavigationController . I keep getting the following error: The view hierarchy is not prepared for the constraint: When added to a view, the constraint's items must be descendants of that view (or the view itself). This will crash if the constraint

问题 I need you to humor me during this question. This is somewhat pseudo code because the actual situation is quite complex. I wouldn't load an image this way unless I needed to. Assume that I need to. NSURL *bgImageURL = [NSURL URLWithString:@"https://www.google.com/images/srpr/logo3w.png"]; UIImage *img = [UIImage imageWithData:[NSData dataWithContentsOfURL:bgImageURL]]; [self.anIBOutletOfUIImageView setImage:img]; but I crash out with -[__NSCFData _isResizable]: unrecognized selector sent to

问题 I have a gridview which I am inflating in a Dialog view. Now when I open the dialog ( with Grid View ) it shows a set of 10 images. when dialog is dismissed the image which I selected is set on the ImageView. Now my query is can I get the name of the image?? which is set on the ImageView??? I have to save it somehwere. @Override public void onClick(View view) { // TODO Auto-generated method stub final Dialog groupIconsDialog = new Dialog(CreateGroupActivity.this); groupIconsDialog.setTitle(

问题 I know this question is on here a lot, but I still can't seem to get this to work. I'm probably not initiating the view correctly or something... Anyway, I'm trying to add several labels and images to a UIScrollView programmatically. Here is my code for my .h file: #import <UIKit/UIKit.h> @interface DOR_HelpViewController : UIViewController <UIScrollViewDelegate> { IBOutlet UIScrollView *scrollView; } @property (nonatomic, retain) IBOutlet UIScrollView *scrollView; @end And my .m file:

问题 Iam new to iphone currently my problem is i displayed 6 images in 6 image views It was not showing images in imageview I think the imageviews are in large size i implement code like this. imageview1 = [[UIImageView alloc] init]; UIImage *img1 = [UIImage imageNamed:@"wolf.jpg"]; [imageview2 setImage:img1]; so plz send me correct code for this imageview. Thank u in advance. 回答1: First of all, you're adding the image 1 to imageview 2 - are you sure you want to do this? Secondly, you need to add

问题 NSArray *imageNames = @[@"2_00000.png", @"2_00001.png", @"2_00002.png", @"2_00003.png", @"2_00004.png", @"2_00005.png", @"2_00006.png", @"2_00007.png", @"2_00008.png", @"2_00009.png", @"2_00010.png", @"2_00011.png", @"2_00012.png", @"2_00013.png", @"2_00014.png", @"2_00015.png", @"2_00016.png", @"2_00017.png", @"2_00018.png", @"2_00019.png", @"2_00020.png", @"2_00021.png", @"2_00022.png", @"2_00023.png", @"2_00024.png", @"2_00025.png", @"2_00026.png", @"2_00027.png", @"2_00028.png", @"2_00029

问题 I am making a very simple app to learn Objective-C and Xcode. The app has an UIButton and a UIImageView. When the user taps the button the image moves down in a diagonal motion from right to left and when it reaches a certain point in the screen it regenerates back to do the same all over again as shown in the image below: (Using an 'if statement') When I open the iOS simulator using iPhone Retina (4-inch) it works perfectly fine. The problem is when I open the simulator using iPhone Retina

问题 i have a code which does some actions after UIImageView.isAnimating is false but funny part is it never goes false its always in YES state. " isAnimating return is faulty for UIImageView for iPhone " people from this link see the same fault with IOS4.x so can anyone please suggest any alternative to check whetheror not UIImageview is animating ? 回答1: The following suggestions are not ideal, but I guess UIImageView should undergo improvements to become ideal in supporting animations. Anyways,