The only difference is in where the view is added: whether it is the frontmost view (addSubview:), or it is before the 5th subview, (insertSubview:atIndex:) or if it is immediately behind another subview (insertSubview:aboveSubview:).
Use recursion: // UIView+HierarchyLogging.h @interface UIView (ViewHierarchyLogging) – (void)logViewHierarchy; @end // UIView+HierarchyLogging.m @implementation UIView (ViewHierarchyLogging) – (void)logViewHierarchy { NSLog(@”%@”, self); for (UIView *subview in self.subviews) { [subview logViewHierarchy]; } } @end // In your implementation [myView logViewHierarchy];
Set the line cap style to round and set the “on” length to a tiny number. Swift playground example: import UIKit import PlaygroundSupport let path = UIBezierPath() path.move(to: CGPoint(x:10,y:10)) path.addLine(to: CGPoint(x:290,y:10)) path.lineWidth = 8 let dashes: [CGFloat] = [0.001, path.lineWidth * 2] path.setLineDash(dashes, count: dashes.count, phase: 0) path.lineCapStyle = CGLineCap.round UIGraphicsBeginImageContextWithOptions(CGSize(width:300, height:20), false, 2) UIColor.white.setFill() … Read more
The above answers add a loading view but it doesn’t block click events on the screen also it does not provides overlay for rest of screen. You can achieve it as follows: let alert = UIAlertController(title: nil, message: “Please wait…”, preferredStyle: .Alert) alert.view.tintColor = UIColor.blackColor() let loadingIndicator: UIActivityIndicatorView = UIActivityIndicatorView(frame: CGRectMake(10, 5, 50, 50)) as … Read more
Maybe this is a bit late, but I want to add that there is a better way. Using UIView is simple, but relatively slow. This method overrides how the view draws itself and is faster: – (void)drawRect:(CGRect)rect { [super drawRect:rect]; CGContextRef context = UIGraphicsGetCurrentContext(); CGContextSetStrokeColorWithColor(context, [UIColor redColor].CGColor); // Draw them with a 2.0 stroke width … Read more
Note that the following method creates just a bitmap of the view; it does not create actual typography. (void)createPDFfromUIView:(UIView*)aView saveToDocumentsWithFileName:(NSString*)aFilename { // Creates a mutable data object for updating with binary data, like a byte array NSMutableData *pdfData = [NSMutableData data]; // Points the pdf converter to the mutable data object and to the UIView … Read more
For anyone else that ends up here: To determine if a UIView is onscreen somewhere, rather than checking superview != nil, it is better to check if window != nil. In the former case, it is possible that the view has a superview but that the superview is not on screen: if (view.window != nil) … Read more
Unfortunately, there isn’t simply a little property you can set to align the border to the outside. It draws aligned to the inside because the UIViews default drawing operations draw within its bounds. The simplest solution that comes to mind would be to expand the UIView by the size of the border width when applying … Read more
I think this is a bug in the documentation. You should file it at bugreport.apple.com. Everything I can see after a bit of quick research suggests what you are seeing is how it always has behaved, and my own testing shows it too. The alpha of a view is applied to all subviews. Perhaps all … Read more
You have to recursively iterate the sub views. – (void)listSubviewsOfView:(UIView *)view { // Get the subviews of the view NSArray *subviews = [view subviews]; for (UIView *subview in subviews) { // Do what you want to do with the subview NSLog(@”%@”, subview); // List the subviews of subview [self listSubviewsOfView:subview]; } }