UserDefaults between iOS and WatchOS not working

问题

Here is the code, but for some reason I get nil when I read from Watch. Any idea what am I missing?

Writing in iOS Method

@IBAction func writeDefaults(_ sender: Any) {
    UserDefaults(suiteName: "group.testingGroups")!.set(true, forKey: "myKey")
}

Reading from WatchOS

@IBAction func readDefaults() {
    let readKey = UserDefaults(suiteName: "group.testingGroups")!.bool(forKey: "myKey")
    print("Key Value:  \(readKey)")
}

I also tried the following when reading but nothing...

 let readKey = UserDefaults.init(suiteName: "group.testingGroups")!.bool(forKey: "myKey")

Apple Developer Site:

WatchAppExtension:

WatchApp:

iOS Project:

回答1:

Communication between watchKit and app using userDefaults has been removed.
It can be done using watchConnectivity framework

来源：https://stackoverflow.com/questions/41051997/userdefaults-between-ios-and-watchos-not-working