Sharing Data with AppGroup

问题

I want to share one variable from my UIKit File to my Widget Extension created with SwiftUI. I followed this here. Please look at the answer from J Arango.

But i dont understand the last part there. I have to use import MySharedObjects.

So I did this:

    import MySharedObject

struct testing {
    let mySharedObject = MySharedObject(name: "My Name", lastName: "My Last Name")
                       
     do {
         let data = try JSONEncoder().encode(mySharedObject)
    
          /// Make sure to use your "App Group" container suite name when saving and retrieving the object from UserDefaults
          let container = UserDefaults(suiteName:"group.com.widgetTest.widgetContainer")
              container?.setValue(data, forKey: "sharedObject")
                            
          /// Used to let the widget extension to reload the timeline
          WidgetCenter.shared.reloadAllTimelines()
    
          } catch {
            print("Unable to encode WidgetDay: \(error.localizedDescription)")
       }
}

But I get the following errors.

Extra argument at position #1, #2 in call
Missing argument for parameter from call
insert from : <#Decoder#>
expected declaration where I use the do part.

回答1:

Save data to UserDefaults in your main App:

UserDefaults(suiteName: <your_app_group>)!.set("test", forKey: "test")

Read data from UserDefaults in your Widget:

let testStr = UserDefaults(suiteName: <your_app_group>)!.string(forKey: "test")

If you want to save other types see:

How can I use UserDefaults in Swift?

来源：https://stackoverflow.com/questions/63995776/sharing-data-with-appgroup

标签

swift

swiftui

widgetkit