Supports Swift 3.0
Have you ever wondered if you can implement a generic key-value observing for Swift. It makes your life easy and saves you a lot of casting. This project is inspired by facebook/KVOController. So, it doesn't only provide a neat API for KVO', but also makes use of Swift generics feature.
- iOS 7.0+ / Mac OS X 10.9+
- Xcode 8
- Swift 3.0
Simple use
observe(retainedObservable: clock, keyPath: "date", options: .New | .Initial)
{ [weak self] (observable: Clock, change: ChangeData<NSDate>) -> () in
if let date = change.newValue {
self?.timeLabel.text = formatter.stringFromDate(date)
}
}Note, you have to give the change a generic type of the property. In our case property is NSDate, so change is of type ChangeData<NSDate>
You can make use of automatic unobserving behavior or if you really want to unobserve, simply call
unobserve(clock, keyPath: "date")KVOController-Swift is available through CocoaPods. To install it, simply add the following line to your Podfile:
pod "KVOController-Swift"For iOS 7.x:
Embedded frameworks require a minimum deployment target of iOS 8.
To use KVOController-Swift with a project targeting iOS 7, you must include KVOController.swift directly into your project.
Mohamed Afifi, mohamede1945@gmail.com
KVOController-Swift is available under the MIT license. See the LICENSE file for more info.