Sending variable between views & Classes

Question

Created Dec ’20

Replies 1

Boosts 0

Participants 2

Hi All,

First post here. I am new to SwiftUi & app development and im struggling with passing data between views & classes. I have been following a tutorial but i want to add further functionality as a good way for learning.

I have a weatherView with the following code

Code Block  struct WeatherView: View {
@ObservedObject var weatherViewModel = WeatherViewModel()
private var city: Int = "2639577"
  var body: some View {
    ZStack {
      BackgroundView()
       
      VStack {
        if weatherViewModel.stateView == .loading {
          Show Loading 
          }
        }
         
        if weatherViewModel.stateView == .success {
			 DO something
	}
}

This call my WeatherViewModel class as following

Code Block class WeatherViewModel: ObservableObject {
	private var city = "city from WeatherView"
	 private func getData() {
		do something
	}
}

Im really struggling to pass the city variable to the class. I need this to then call the API client.

Could anyone shed some light on how to this this please.

Thank you very much

Boost

Answer 1

Thisisbohau OP

Dec ’20

Hi there,
you could just change the value inside the class using:

Code Block Swiftclass WeatherViewModel: ObservableObject {
    @Published var city : String = "city name changed by view"
    func getCityData(){
        print("called")
    }
}
struct WeatherView: View {
    @ObservedObject var data = WeatherViewModel()
    var body: some View{
        VStack{
            Button(action: {
                data.city = "city name"
            }){
                Text("Change City")
            }
        }
    }
}

Does this help you?

Take care
David

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