NSUserDefaultsApp Groups WatchKit swift

Question

我尝试使用NSUserdefaults编写一个小的测试应用程序来在iPhone和Watch之间进行通信。但在尝试了许多解决方案后，它仍然不起作用。所以我在这里发布了我的代码来寻求帮助。谢谢!

iPhone端:导入UIKit

类ViewController: UIViewController {

@IBOutlet var addLabel: UILabel!

var n : Int = 0

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

@IBAction func addBtn(sender: AnyObject) {        
    n++
    addLabel.text = "\(n)"     
}

@IBAction func sendBtn(sender: AnyObject) {

    let mySharedDefaults = NSUserDefaults(suiteName: "group.com.sunyi.sharingdatasunyi")

    mySharedDefaults?.setInteger(n, forKey: "savedUserInput")

    mySharedDefaults?.synchronize()
}

}

和观察端:导入WatchKit导入基础

类InterfaceController: WKInterfaceController {

@IBOutlet var myWatchLabel: WKInterfaceLabel!

override func awakeWithContext(context: AnyObject?) {
    super.awakeWithContext(context)      
    // Configure interface objects here.
}

override func willActivate() {
    // This method is called when watch view controller is about to be visible to user
    super.willActivate()
}

override func didDeactivate() {
    // This method is called when watch view controller is no longer visible
    super.didDeactivate()
}

@IBAction func showBtn() {

    let mySharedDefaults = NSUserDefaults(suiteName: "group.com.sunyi.sharingdatasunyi")

    mySharedDefaults?.synchronize()

    var a : Int = -1

    a = mySharedDefaults!.integerForKey("savedUserInput")

    self.myWatchLabel.setText("\(a)")

}

}

我已经建立了应用程序组，ID是group.com.sunyi.sharingdatasunyi。项目名称为sharingdatasunyi。捆绑ID为com.sunyi.sharingdatasunyi。最后的结果是:无论我在手表端输入什么，在按下ShowButton on watch之后，标签总是显示0(不是-1，不是我的输入数字)。那么，我该怎么做呢？

非常感谢!

Answer 1

您使用的是watchOS 1还是2？在watchOS 2上，你不能使用NSUserDefaults在手表和iPhone之间通信，即使它们使用的是共享组。您应该考虑使用WatchConnectivity和sendMessage在两个设备之间进行实时通信。