CODEWITHSUNDEEP
iosswiftxcodeswiftui
JMK
JMK

Reputation: 28069

SwiftUI - Assign a value from a callback, display in view

I'm stuck on something which should be trivial, using SwiftUI. I am pulling some data back from my API, and simply want to show each item on my view with ForEach.

I have the following function:

@State var workoutVideoList: GetWorkoutVideoListResponse!

func GetWorkoutVideoList() {
    loadingWorkoutVideoList = true
    
    PtPodsApiService.GetWorkoutList(firebaseToken: firebaseAuthToken) { (workoutListResult) -> () in
        DispatchQueue.main.async() {
            workoutVideoList = workoutListResult
            loadingWorkoutVideoList = false
        }
    }
}

I then want to show another view and pass this object into it:

if workoutVideoList != nil {
    BookAppointmentView(workoutVideoList: workoutVideoList)
}
else {
    Text("Nope")
}

For whatever reason, my main thread sees workoutVideoList as nil, even though it's been assigned. I thought using the dispatcher to assign it would solve the problem, but no joy!

Any idea what I'm doing wrong here?

Thanks

Upvotes: 0

Views: 1182

Answers (1)

lorem ipsum
lorem ipsum

Reputation: 29614

Give @State a default value @State var workoutVideoList: GetWorkoutVideoListResponse = false and use onAppear to call GetWorkoutVideoList() but ideally you will eventually get this working in a ViewModel.

Upvotes: 1

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