Swift WatchConnectivity app context as Dictionary - ios

Question

I am working on my first Apple Watch app (an extension to my iOS app). I am facing a small problem in sending data from one WKInterfaceController to another.
My First Controller (InterfaceController.swift) has didReceiveMessage where it receives data from my iOS app.
func session(_ session: WCSession, didReceiveMessage message: [String : Any]) {
let myQrValue = message["qrCode"] as! String
let myQrImage = message["qrCodeImageData"] as! Data
var myData: [AnyHashable: Any] = ["myQrValue": myQrValue, "myQrImage": myQrImage]
if myQrValue.isEmpty == false {
WKInterfaceController.reloadRootControllers(withNames: ["QrScreen"], contexts: [myData])
}
}
Then in my Second Controller (QrInterfaceController.swift), I am having below to fetch the data sent from the first controller -
override func awake(withContext context: Any?) {
super.awake(withContext: context)
print("context \(context)")
if let myData = context {
print("myData \(myData)")
// userQrNumber.setText(myData)
}
if let myQrImage = myQrImage {
userQrImage.setImageData(myQrImage)
}
if let myQrLabel = myQrLabel {
userQrNumber.setText(myQrLabel)
}
self.setTitle("")
}
I am stuck (could be simple/silly question) as how to parse my data from the context in the second controller?
Also, the didReceiveMessage works only the second time when I launch my ViewController where the sendMessage code is placed. Is it normal?

Answer 1

First, you might want to redeclare myData as this:
var myData: [String: Any] = ...
which makes it a bit simpler. Then, in the awake function, you’d go ahead like this:
if let myData = context as? [String: Any] {
if let myQrImage = myData["myQrValue"] as? Date {
...
Does this show you the right direction?