WatchConnectivity

We have done this so often now, we can almost do it blind.

Create a new Swift file, making sure that the WatchKit target is selected, and name it WatchConnectivity.swift. Replace the import statement with the following code, most of which you have seen before:

Import WatchConnectivity

class WatchConnectivityManager: NSObject, WCSessionDelegate {

    static let sharedManager = WatchConnectivityManager()

    private override init() {
        super.init()
        if WCSession.isSupported() {
            let session = WCSession.defaultSession()
            session.delegate = self
            session.activateSession()
        }
    }

    func sendDataToWatch(data: AnyObject) {
        guard let contextData = data as? LocationSet else {return}

        let dataArray = contextDataFrom(locationSet: contextData)
        let context = [kApplicationContextDataKey: dataArray]
do {
            try WCSession.defaultSession().updateApplicationContext(context)
            print("updateApplicationContext...