Here’s a relatively simple approach. Just create an NSAttributedString with the appropriate font and ask for its size: – (CGFloat)widthOfString:(NSString *)string withFont:(NSFont *)font { NSDictionary *attributes = [NSDictionary dictionaryWithObjectsAndKeys:font, NSFontAttributeName, nil]; return [[[NSAttributedString alloc] initWithString:string attributes:attributes] size].width; }
Recent versions of llvm have added an attribute that indicates that subclasses must call super: @interface Barn:NSObject – (void)openDoor NS_REQUIRES_SUPER; @end @implementation Barn – (void) openDoor { ; } @end @interface HorseBarn:Barn @end @implementation HorseBarn – (void) openDoor { ; } @end Compiling the above produces the warning: Method possibly missing a [super openDoor] call
Solution that worked for me included: Setting canCancelContentTouches in UIScrollView to YES. Extending UIScrollView to override touchesShouldCancelInContentView:(UIView *)view to return YES when view is a UIButton. According to documentation touchesShouldCancelInContentView returns “YES to cancel further touch messages to view, NO to have view continue to receive those messages. The default returned value is YES if … Read more
Menu mouse tracking is done in a special run loop mode (NSEventTrackingRunLoopMode). In order to modify the menu, you need to dispatch a message so that it will be processed in the event tracking mode. The easiest way to do this is to use this method of NSRunLoop: [[NSRunLoop currentRunLoop] performSelector:@selector(updateTheMenu:) target:self argument:yourMenu order:0 modes:[NSArray … Read more
Preface: POP and OOP are not mutually exclusive. They’re design paradigms that are greatly related. The primary aspect of POP over OOP is that is prefers composition over inheritance. There are several benefits to this. In large inheritance hierarchies, the ancestor classes tend to contain most of the (generalized) functionality, with the leaf subclasses making … Read more
The problem with exposing an Int? property as NSNumber* is that you could store a non-Int-compatible NSNumber to it from Objective-C. You can make a computed NSNumber? property to wrap your Int? property. The getter would simply return the Int? variable. The setter would set the Int variable from -[NSNumber integerValue].
I managed to workaround the new transition type by creating a category for UINavigationController. In my case I needed to revert it to the old transition style because I have transparent viewControllers that slide over a static background. UINavigationController+Retro.h @interface UINavigationController (Retro) – (void)pushViewControllerRetro:(UIViewController *)viewController; – (void)popViewControllerRetro; @end UINavigationController+Retro.m #import “UINavigationController+Retro.h” @implementation UINavigationController (Retro) – … Read more
I think the problem is that Challenges is a NSManagedObject class and you need the designated initializer: initWithEntity:insertIntoManagedObjectContext: instead of Challenges *newChallenge = [[Challenges alloc] init]; Read More..
I figured it out within minutes of posting my comment. Adding my finding as an answer because it is an example which is missing in the docs. The below code will give you the viewDidLoad method that you want. Its so easy in a way that i wonder why Apple has not implemented it yet … Read more
See App Launch (Default) Images under the iOS Application Programming Guide. It should also be noted Apple advised NOT abusing the launch image as a splash screen. Apple HIG