How to extend WKInterfaceImage with a method to load remote images on watchOS

README.md

How to extend WKInterfaceImage with a method to load remote images on watchOS

Usage:

myImage.setImageWithUrl(myUrl, 2.0)

Prerequisites

Make sure you whitelist the domains in the Info.plist or allow all with:

	<key>NSAppTransportSecurity</key>
	<dict>
		<key>NSAllowsArbitraryLoads</key>
		<true/>
	</dict>

MyController.swift

import WatchKit

public extension WKInterfaceImage {
    
    public func setImageWithUrl(url:String, scale: CGFloat = 1.0) -> WKInterfaceImage? {
        
        NSURLSession.sharedSession().dataTaskWithURL(NSURL(string: url)!) { data, response, error in
            if (data != nil && error == nil) {
                let image = UIImage(data: data!, scale: scale)
                
                dispatch_async(dispatch_get_main_queue()) {
                    self.setImage(image)
                }
            }
        }.resume()
        
        return self
    }
}