Jay Versluis To convert a file path into an NSURL: NSURL *localURL = [NSURL fileURLWithPath:localPath]; To create a local path from an NSURL: NSString *localPath = [localURL filePathURL]; NSURLs can also be created directly from an NSString: NSURL *yourURL = [[NSURL alloc]initWithString:@”http://wpguru.co.uk”]; // or NSURL *yourURL = [NSURL URLWithString:@”http://wpguru.co.uk”]; If you’re ever tried to pass a local […]
If Device A saves or changes a file in your app’s iCloud folder, Device B might want to know about this. So you’d imagine there should be an easy way to monitor those changes by way of a notification or a delegate. Sadly there isn’t. Like many things in Objective C, this is way more […]
Sometimes it can be difficult to find which of your own apps are installed on a device, especially when you’ve made so many over the years and also have installed countless ones from the app store. Here’s how to list “your apps” in Xcode 5: connect the device head over to Window – Organizer – […]
Sometimes this error pops up when running an app on an iOS device: Could not change executable permissions on the application. Usually this is caused by an app with a re-purposed Bundle Identifier. If you create a new app and use the same Bundle Identifier as a different app that is already installed, then Xcode […]
I must admit that the new default font in TwentyFourteen looks damn sexy – but I’ve only just gotten used to the TwentyThirteen theme. Don’t get me wrong, if you’re after a magazine style theme then TwentyFourteen does a great job. Since I didn’t want to change themes again over at versluis.com, I thought perhaps … Read more
Sometimes iOS updates go awry. It may happen that the device hangs itself for good, refusing to activate or be recognised by iTunes. In that case, it’s time for a DFU reset, also known as Recovery Mode. Download an .ipsw file for your device from the Developer Centre (either a beta or the release version) […]
Today Xcode surprised me with an error message I hadn’t heard before: property’s synthesized getter follows Cocoa naming convention for returning ‘owned’ objects. At first I thought, “isn’t that a good thing?”, and after checking how I had defined a new property I was clueless why this was happening: @property (nonatomic, strong) Phrase *newPhrase; What […]
NSManagedObjects behave differently to NSObjects on many levels. If you’d like to add custom start-up behaviour in your NSManagedObjects, you’ll have noticed that overriding the standard init method isn’t working. Instead, we can use the awakeFromFetch method. This is called automatically when a managed object is retrieved from the Core Data stack: – (void)awakefrom { […]