Sharing Data with AppGroup

Question

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.

This might help you: Share data between main App and Widget in SwiftUI for iOS 14 If it's just one variable you can use shared UserDefaults. And why do you need MySharedObjects? — pawello2222
– pawello2222, Commented Sep 21, 2020 at 16:08
I have to admit that i dont understand what the person is explaining. Is he creating a text file and store the data there? — submariner
– submariner, Commented Sep 21, 2020 at 19:30

pawello2222 · Accepted Answer · 2020-09-21 19:57:45Z

11

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?

edited Sep 21, 2020 at 19:57

answered Sep 21, 2020 at 19:35

pawello2222

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1 Comment

submariner Over a year ago

It worked thank you. It was much more simple than I tought. I tested it with Main app as SwiftUI and Widget as SwiftUI. I will check tomorrow if this also works with my Main app as Storyboard and Widget as SwiftUI.

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