我一直在尝试从 iPhone 向 watch 发送一个变量。我已设法使用 watchConnectivity 发送它，但我无法让 watch 应用程序中的选择器使用我发送的新变量进行更新。
这是 watch 应用程序的代码:
import WatchKit
import Foundation
import WatchConnectivity
var bigDict = ["":""]
class InterfaceController: WKInterfaceController, WCSessionDelegate {
lazy var keys = Array(bigDict.keys)
lazy var values = Array(bigDict.values)
var pickerItems: [WKPickerItem] = []
@IBOutlet var pickerW: WKInterfacePicker!
@IBAction func pickerDidChange(_ value: Int) {
}
@IBAction func updateButton() {
for item in keys{
let pickerItem = WKPickerItem()
pickerItem.title = item
pickerItem.caption = bigDict[item]
pickerItems += [pickerItem]
}
pickerW.setItems(pickerItems)
}
//func refreshPickerItems() {
//for item in keys{
//let pickerItem = WKPickerItem()
//pickerItem.title = item
//pickerItem.caption = bigDict[item]
//pickerItems += [pickerItem]
// }
//pickerW.setItems(pickerItems)
// }
override func awake(withContext context: Any?) {
super.awake(withContext: context)
// Configure interface objects here.
//refreshPickerItems()
}
override func willActivate() {
// This method is called when watch view controller is about to be visible to user
super.willActivate()
if WCSession.isSupported() {
let session = WCSession.default
session.delegate = self
session.activate()
}
}
func session(_ session: WCSession, activationDidCompleteWith activationState: WCSessionActivationState, error: Error?) {
}
func session(_ session: WCSession, didReceiveMessage message: [String : Any]) {
print(message)
bigDict = message as! [String : String]
print(bigDict)
}
}
最佳答案
当你收到数据时，你不应该调用“updateButton()”吗？
func session(_ session: WCSession, didReceiveMessage message: [String : Any]) {
print(message)
bigDict = message as! [String : String]
updateButton()
print(bigDict)
}
关于iphone - 使用 watchConnectivity 发送变量但无法让 watch 应用程序中的选择器更新，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/48022145/