In my iOS application I use Core Data to store data and a fetch request to create an array of NSManagedObjects to display in a UITableView.
On the Watch OS I check if WCSession is supported and active a session, then send the iOS application a message from the watchOS extension.
When the iOS application receives the message from the watchOS it should send the array of Objects to the watchOS extension to display the data in the WKInterfaceTable, but I am unsure how to do this. Ultimately what I am trying to achieve is;
How to share the array of
Objectswith the watchOS extension?If the user adds/edits/deletes objects in the array on the Watch, how can we update the data on the iPhone ?
Also, the iOS application is embedded within a
UITabBarControllerso does it matter which view controller I communicate with?
Watch OS FavouritesInterfaceController
var session : WCSession!
override func willActivate() {
// This method is called when watch view controller is about to be visible to user
super.willActivate()
//Check if session is supported and Activate
if (WCSession.isSupported()) {
session = WCSession.defaultSession()
session.delegate = self
session.activateSession()
}
}
override func awakeWithContext(context: AnyObject?) {
super.awakeWithContext(context)
// Interface Objects
//Send Message
sendmessagetoiphone()
}
func sendMessageToIphone() {
if(WCSession.isSupported()){
session.sendMessage(["b":"goodBye"], replyHandler: nil, errorHandler: nil)
}
}
IOS Application : FavouritesViewController
var objects = [Objects]()
func loadData() {
let moc = (UIApplication.sharedApplication().delegate as! AppDelegate).managedObjectContext
let request = NSFetchRequest(entityName: "Objects")
request.sortDescriptors = [NSSortDescriptor(key: "date", ascending: true)]
do {
try
self.objects = moc.executeFetchRequest(request) as! [Objects]
// success ...
} catch {
// failure
print("Fetch failed")
}
}
func session(session: WCSession, didReceiveMessage message: [String : AnyObject], replyHandler: ([String : AnyObject]) -> Void) {
//handle received message
let value = message["Value"] as? String
dispatch_async(dispatch_get_main_queue()) {
self.messageLabel.text = value
}
//send a reply
replyHandler(["Value":"Hello Watch"])
}