ThomasM, We had similar ideas about encapsulating behavior inside a custom view (say, a slider with companion labels for min/max/current values, with value-changed events also handled by the control internally). In our current best-practice, we would design the ShareView in Interface Builder (ShareView.xib), as described by Eimantas in his answer. We then embed the ShareView … Read more
You can use +[UIColor colorWithPatternImage:] to produce a patterned background. Example (bring your own CGGradient): // Allocate color space CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); // Allocate bitmap context CGContextRef bitmapContext = CGBitmapContextCreate(NULL, 320, 480, 8, 4 * 320, colorSpace, kCGImageAlphaNoneSkipFirst); //allocate myGradient CGFloat locationList[] = {0.0f, 1.0f}; CGFloat colorList[] = {0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, … Read more
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:).
Whenever I want to display some overlay on top of everything else, I just add it on top of the Application Window directly: [[[UIApplication sharedApplication] keyWindow] addSubview:someView]
The problem with the code in the question seems to be that the transformations keep getting added to each other. In order to fix this, the solution is to reset the transformations every time, that is, set it to the identity transform. rotationView.transform = CGAffineTransformIdentity Here is a partial implementation that shows the key parts. … Read more
My own best answer so far involves setting the tableHeaderView once and forcing a layout pass. This allows a required size to be measured, which I then use to set the frame of the header. And, as is common with tableHeaderViews, I have to again set it a second time to apply the change. – … Read more
If the masksToBounds property is set to YES, any sublayers of the layer that extend outside its boundaries will be clipped to those boundaries. Think of the layer, in that case, as a window onto its sublayers; anything outside the edges of the window will not be visible. When masksToBounds is NO, no clipping occurs, … Read more
Yes, adding it to the UIWindow would be extremely hacky and finicky. Storyboards If you’re using Storyboards and iOS 5.0 onwards, you should be able to use container views and do something like this: Here’s another picture showing the, rather simplistic, structure of the first View Controller: The view controller on the left has a … Read more
How to detect touches in a view which is moving override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? { let pf = layer.presentation()!.frame // note, that is in the space of our superview let p = self.convert(point, to: superview!) if pf.contains(p) { return self } return nil } It’s that easy Related tip … Read more
There’s a function called CGRectIntersectsRect which receives two CGRects as arguments and returns if the two given rects do intersect. And UIView has subviews property which is an NSArray of UIView objects. So you can write a method with BOOL return value that’ll iterate through this array and check if two rectangles intersect, like such: … Read more