UILabel: “The UILabel class implements a read-only text view.” UITextField: “A UITextField object is a control that displays editable text and sends an action message to a target object when the user presses the return button.” UITextView: “The UITextView class implements the behavior for a scrollable, multiline text region.” So: labels are read-only textfields are … Read more
This little trick works for me. @implementation UIGestureRecognizer (Cancel) – (void)cancel { self.enabled = NO; self.enabled = YES; } @end From the UIGestureRecognizer @enabled documentation: Disables a gesture recognizers so it does not receive touches. The default value is YES. If you change this property to NO while a gesture recognizer is currently recognizing a … Read more
CIImage *ciImage = [UIImage imageNamed:@”test.png”].CIImage; UIImage *uiImage = [[UIImage alloc] initWithCIImage:ciImage]; To fix the case where myUIImage.CIImage returns nil like [UIImageView image], you can instead do [CIImage imageWithCGImage:myUIImage.CGImage] – Dylan Hand Swift version: let ciImage = UIImage(named: “test.png”)!.ciImage let uiImage = UIImage(ciImage: ciImage) To fix the case where myUIImage.ciImage returns nil like you can instead … Read more
There are a number of methods of UIView that allow you to modify the view hierarchy. bringSubviewToFront: sendSubviewToBack: insertSubview:atIndex: insertSubview:aboveSubview: insertSubview:belowSubview: exchangeSubviewAtIndex:withSubviewAtIndex: Since your views are already inserted into your superview, you could easily call bringSubviewToFront: once for each view in whatever order you like.
As others described, the easiest solution is to put your UIImageView into a UIScrollView. I did this in the Interface Builder .xib file. In viewDidLoad, set the following variables. Set your controller to be a UIScrollViewDelegate. – (void)viewDidLoad { [super viewDidLoad]; self.scrollView.minimumZoomScale = 0.5; self.scrollView.maximumZoomScale = 6.0; self.scrollView.contentSize = self.imageView.frame.size; self.scrollView.delegate = self; } You … Read more
Usually it’s easier to create the request like this NSURLRequest *request = [NSURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:60.0]; Then create the connection NSURLConnection *conn = [NSURLConnection connectionWithRequest:request delegate:self]; and implement the connection:willCacheResponse: method on the delegate. Just returning nil should do it. – (NSCachedURLResponse *)connection:(NSURLConnection *)connection willCacheResponse:(NSCachedURLResponse *)cachedResponse { return nil; }
For loading custom objects in an array, this is what I’ve used to grab the array: NSUserDefaults *currentDefaults = [NSUserDefaults standardUserDefaults]; NSData *dataRepresentingSavedArray = [currentDefaults objectForKey:@”savedArray”]; if (dataRepresentingSavedArray != nil) { NSArray *oldSavedArray = [NSKeyedUnarchiver unarchiveObjectWithData:dataRepresentingSavedArray]; if (oldSavedArray != nil) objectArray = [[NSMutableArray alloc] initWithArray:oldSavedArray]; else objectArray = [[NSMutableArray alloc] init]; } You should check … Read more
NSData *imageData = UIImageJPEGRepresentation(image, 0.7); // 0.7 is JPG quality or NSData *imageData = UIImagePNGRepresentation(image); Depending if you want your data in PNG format or JPG format.
First of all, it is very important to note, that there is a big difference between UITextView and UILabel when it comes to how text is rendered. Not only does UITextView have insets on all borders, but also the text layout inside it is slightly different. Therefore, sizeWithFont: is a bad way to go for … Read more
The entry point in a plain Swift module is the file in the module called main.swift. main.swift is the only file which is allowed to have expressions and statements at the top level (all other Swift files in the module can only contain declarations). Cocoa Touch uses the @UIApplicationMain attribute on an implementation of UIApplicationDelegate … Read more