I’m trying to rotate a UIImageView 360 degrees, and have looked at several tutorials online. I could get none of them working, without the UIView either stopping, or jumping to a new position. How can I achieve this? The latest thing I’ve tried is: [UIView animateWithDuration:1.0 delay:0.0 options:0 animations:^{ imageToMove.transform = CGAffineTransformMakeRotation(M_PI); } completion:^(BOOL finished){ … Read more
I want to move one view on top of another, how can I know the z index of the view, and how to move on to top? 9 Answers 9
I’ve run into a couple of cases now where it would be convenient to be able to find the “topmost” view controller (the one responsible for the current view), but haven’t found a way to do it. Basically the challenge is this: Given that one is executing in a class that is not a view … Read more
How do I add a touch event to a UIView? I try: UIView *headerView = [[[UIView alloc] initWithFrame:CGRectMake(0, 0, tableView.bounds.size.width, nextY)] autorelease]; [headerView addTarget:self action:@selector(myEvent:) forControlEvents:UIControlEventTouchDown]; // ERROR MESSAGE: UIView may not respond to ‘-addTarget:action:forControlEvents:’ I don’t want to create a subclass and overwrite – (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event 16 Answers 16
I would like to know how to use these properties in the right manner. As I understand, frame can be used from the container of the view I am creating. It sets the view position relative to the container view. It also sets the size of that view. Also center can be used from the … Read more
I’m trying to generate a view with a gradient color background (A solid color to transparent) at runtime. Is there a way of doing that? 20 Answers 20
I’ve been working on an application for a couple of years and received a simple design request: Round the corners on a UIView and add a drop shadow.To do as given below. I want a custom UIView… : I just wanted a blank white view with rounded corners and a light drop shadow (with no … Read more
Is there a way to set cornerRadius for only top-left and top-right corner of a UIView? I tried the following, but it end up not seeing the view anymore. UIView *view = [[UIView alloc] initWithFrame:frame]; CALayer *layer = [CALayer layer]; UIBezierPath *shadowPath = [UIBezierPath bezierPathWithRoundedRect:frame byRoundingCorners:(UIRectCornerTopLeft|UIRectCornerTopRight) cornerRadii:CGSizeMake(3.0, 3.0)]; layer.shadowPath = shadowPath.CGPath; view.layer.mask = layer; 30 … Read more
I’m trying to figure this out since last week without going any step further. Ok, so I need to apply some constraints programmatically in Swift to a UIView using this code: var new_view:UIView! = UIView(frame: CGRectMake(0, 0, 100, 100)); new_view.backgroundColor = UIColor.redColor(); view.addSubview(new_view); var constX:NSLayoutConstraint = NSLayoutConstraint(item: new_view, attribute: NSLayoutAttribute.CenterX, relatedBy: NSLayoutRelation.Equal, toItem: self.view, attribute: … Read more
My login view has a subview which has a UIActivityView and a UILabel saying “Signing In…”. This subview has corners which aren’t rounded. How can I make them round? Is there any way to do it inside my xib? 2Best Answer 21 Try this #import <QuartzCore/QuartzCore.h> // not necessary for 10 years now 🙂 … … Read more
