| import Cocoa | |
| // Support Foundation calls on String | |
| public extension String { public var ns: NSString {return self as NSString} } | |
| /// Custom Labeled Playground-Based Drag-and-Drop window | |
| public class DropView: NSTextField { | |
| // Default action handler | |
| public var handler: ([String]) -> Void = { paths in Swift.print(paths) } |
| #!/usr/bin/env bash | |
| ########################################################################### | |
| # Originally written by: Henrik Bengtsson, 2014 | |
| # https://github.com/HenrikBengtsson/speedtest-cli-extras | |
| # Modified to use IFTTT by: Alasdair Allan, 2015 | |
| # License: GPL (>= 2.1) [http://www.gnu.org/licenses/gpl.html] | |
| ########################################################################### | |
| # Character for separating values | |
| # (commas are not safe, because some servers return speeds with commas) |
A common task when developing iOS apps is to register custom cell subclasses for both UITableView and UICollectionView. Well, that is if you don’t use Storyboards, of course.
Both UITableView and UICollectionView offer a similar API to register custom cell classes:
public func registerClass(cellClass: AnyClass?, forCellWithReuseIdentifier identifier: String)
public func registerNib(nib: UINib?, forCellWithReuseIdentifier identifier: String)
| import CoreData | |
| protocol Fetchable | |
| { | |
| typealias FetchableType: NSManagedObject | |
| static func entityName() -> String | |
| static func objectsInContext(context: NSManagedObjectContext, predicate: NSPredicate?, sortedBy: String?, ascending: Bool) throws -> [FetchableType] | |
| static func singleObjectInContext(context: NSManagedObjectContext, predicate: NSPredicate?, sortedBy: String?, ascending: Bool) throws -> FetchableType? | |
| static func objectCountInContext(context: NSManagedObjectContext, predicate: NSPredicate?) -> Int |
Here's my own list of the interesting stuff announced during this year's WWDC, collected from the keynotes, various Apple docs, blog posts and tweets.
If you're planning to watch the videos, I really recommend this Mac app that helps you download and watch them: https://github.com/insidegui/WWDC.
http://www.apple.com/osx/elcapitan-preview/
| - (UIInterfaceOrientation)relativeInterfaceOrientationFromRotationAngle:(CGFloat)angle { | |
| NSArray * conversionMatrix = @[ @(UIInterfaceOrientationPortrait), | |
| @(UIInterfaceOrientationLandscapeRight), | |
| @(UIInterfaceOrientationPortraitUpsideDown), | |
| @(UIInterfaceOrientationMaskLandscapeLeft)]; | |
| NSInteger oldIndex = [conversionMatrix indexOfObject:@(self.interfaceOrientation)]; | |
| if (oldIndex == NSNotFound) | |
| return UIInterfaceOrientationUnknown; | |
| NSInteger newIndex = (oldIndex - (NSInteger)roundf(angle / M_PI_2)) % 4; |
| - (UIInterfaceOrientation)orientationByTransforming:(CGAffineTransform)transform fromOrientation:(UIInterfaceOrientation)c | |
| { | |
| CGFloat angle = atan2f(transform.b, transform.a); | |
| NSInteger multiplier = (NSInteger)roundf(angle / M_PI_2); | |
| UIInterfaceOrientation orientation = self.interfaceOrientation; | |
| if (multiplier < 0) { | |
| // clockwise rotation | |
| while (multiplier++ < 0) { | |
| switch (orientation) { |
In this article, I'm going to explore a way that we can create views that implement custom Core Animation property animations in a natural way.
As we know, layers in iOS come in two flavours: Backing layers and hosted layers. The only difference between them is that the view acts as the layer delegate for its backing layer, but not for any hosted sublayers.
In order to implement the UIView transactional animation blocks, UIView disables all animations by default and then re-enables them individually as required. It does this using the actionForLayer:forKey: method.
Somewhat strangely, UIView doesn't enable animations for every property that CALayer does by default. A notable example is the layer.contents property, which is animatable by default for a hosted layer, but cannot be animated using a UIView animation block.
