You can switch out the NSPersistentStore file in your running Core Data app by first adding your new store file, then removing the previous one. Once done you must execute your fetch request again so that the new data is available. Hot-swapping stores assumes both NSPersistentStore files are based on the same model. It’s like […]
In Xcode 4 there was an option that read “Icon already has gloss effect”. This was available in the Project Settings, as well as a Plist Option under Info. YES would remove the gloss effect. The above option still works in Xcode 5 unless you use an Asset Catalogue. If you do, here’s where the […]
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) […]
