touchesbegan

In an iPhone word game I have an UIScrollView (holding UIImageView ) and 7 draggable custom UIView s placed initially at the bottom (and outside the scroll view): In the single ViewController.m I have overwritten viewDidLayoutSubviews so that it always sets the zoomScale of the scroll view - to have the UIImageView fill exactly 100% of the screen width. This works well - for portrait and landscape modes. And when the app is just started: My problem is however, when I first pinch/zoom/double-tap the scroll view and then move one of the seven Tile.m views: Suddenly (not every time)

On iPhone's with 3D touch enabled, there is a feature where long pressing the left hand side of the screen with enough force opens lets you change which app is active. Because of this, when a non-moving touch happens on the left hand side of the screen, the touch event is delayed for a second or two until the iPhone verifies that the user is not trying to switch tasks and is interacting with the app. This is a major problem when developing a game with SpriteKit, as these touches are delayed by a second every time a user taps/holds their finger on the left edge of the screen. I was able to

In the Apple documentation here Advanced Scene Processing it describes the update method and how a scene is rendered, but it does not mention when input is processed. It is not clear if this is in in the same thread as the rendering loop, or whether it is concurrent with it. If I have an object that I update from both the SKScene update method and the touchesBegan method (in this case of a SKSpriteNode ) do I have to worry about synchronising the two accesses to my object? So after a few days with no answer I set up some experiments. By the way, these tests are run on the simulator and not on

I am looking for a way to create a CIRCULAR UIView that is resizable and stays centered ( see image ). The CIRCULAR view in this example is a UIView subclass WCSDailyGoal . ContainerView.m - (void)createDailyGoalView { _dailyGoalView = [[WCSDailyGoalView alloc] initWithFrame:CGRectMake(0, 0, 200, 200)]; _dailyGoalView.delegate = self; _dailyGoalView.goal = 200; _dailyGoalView.center = self.view.center; [self.view addSubview:_dailyGoalView]; } WCSDailyGoal.m - (void)setGoal:(CGFloat)goal { CGPoint saveCenter = self.center; CGRect newFrame = CGRectMake(self.frame.origin.x, self.frame.origin.y,

As an iOS programming newbie I am struggling with a word game for iPhone . The app structure is: scrollView -> contentView -> imageView -> image 1000 x 1000 (here fullscreen ): I think I have finally understood how to use an UIScrollView with Auto Layout enabled in Xcode 5.1: I just specify enough constraints (dimensions 1000 x 1000 and also 0 to the parent) for the contentView and this defines the _scrollView.contentSize (I don't have to set it explicitly) - after that my game board scrolls and zooms just fine. However I have troubles with my draggable letter tiles implemented in Tile.m . I