cgrect

I have a UIView, in which I have arranged UIButtons. I want to find the positions of those UIButtons. I am aware that buttons.frame will give me the positions, but it will give me positions only with respect to its immediate superview. Is there is any way we can find the positions of those buttons, withe respect to UIButtons superview's superview? For instance, suppose there is UIView named "firstView". Then, I have another UIView, "secondView". This "SecondView" is a subview of "firstView". Then I have UIButton as a subview on the "secondView". ->UIViewController.view --->FirstView A -------

I was writing a program in swift and just now I noticed that I can directly access a CGRect frame's width and height properties directly without using the CGSize width and height. That is I am now able to write a code like this. @IBOutlet var myView: UIView! override func viewDidLoad() { super.viewDidLoad() var height = myView.frame.height var height1 = myView.frame.size.height } In Objective C, when I tried to write the same code, the line height = view.frame.height is throwing an error. Can anyone please tell me the difference(if any) in these two lines of code. I just looked into the CGRect

I have simple UIWebView with loaded html. I want to show the PopoverView pointed to the selected text. I can get the menuFrame of the UIMenuController and use its rect, but the result isn't as accurate at the corners of the screen as I need. I can calculate the screen size and get menuFrame rect and then I can suppose where the selection may be found, but I want exactly know where is the selected text. Is it generally possible? hwaxxer You can use the javascript function getBoundingClientRect() on the range object of the selected text. This is how I do it: function getRectForSelectedText() {

I wan't a imageview which is semi-transparent in other parts and completely transparent in the middle .. see this image.. i have managed to do it but it is not the best of ways.. can I only have a rect inside yellow lines transparent ...? EDIT : Is it possible to change the alpha of a certain rect of a view..? Gopal R Place a custom UIView over the view showing the image, size and position it to exactly overlap. In the custom view's drawRect method - (void)drawRect:(CGRect)rect { // Drawing code CGRect rBounds = self.bounds; CGContextRef context = UIGraphicsGetCurrentContext(); // Fill

This question was originally asked for the objective-c programming language. At the time of writing, swift didn't even exist yet. Question Is it possible to change only one property of a CGRect ? For example: self.frame.size.width = 50; instead of self.frame = CGRectMake(self.frame.origin.x, self.frame.origin.y, self.frame.size.width, 50); of course I understand that self.frame.size.width is read only so I'm wondering how to do this? CSS ANALOGY proceed at your own risk for those of you who are familiar with CSS , the idea is very similar to using: margin-left: 2px; instead of having to change

I am trying to achieve an animation that when you hold down a button it animates a block down, and when you release, it animates it back up to the original position, but I cannot obtain the current position of the animating block no matter what. Here is my code: -(IBAction)moveDown:(id)sender{ CGRect position = [[container.layer presentationLayer] frame]; [movePath moveToPoint:CGPointMake(container.frame.origin.x, position.y)]; [movePath addLineToPoint:CGPointMake(container.frame.origin.x, 310)]; CAKeyframeAnimation *moveAnim = [CAKeyframeAnimation animationWithKeyPath:@"position"]; moveAnim