Hi all. I getting a weird behaviour in XCode13. I am going through the 100 days of SwiftUI and day 65 (Instafilter app), I am not able to see the UI in canvas (more then 5 secondds error) and in my phone I get all the items duplicated and app crash because of memory. I just coded the first video of day-65.

Thanks, Renato.

Chances are you typed something wrong and it's causing Xcode to choke. Please post your code.

Thanks @roosterboy! Here is the code. I think the problem is in the ZStack with the rectangle(). If I remove that block of code it works.

import SwiftUI

struct ContentView: View {

    @State private var image: Image?
    @State private var filterIntensity = 0.5

    var body: some View {
        NavigationView {
            VStack {
                HStack {
                    Rectangle()
                        .fill(Color.secondary)

                    if image != nil {
                        image?
                            .resizable()
                            .scaledToFit()
                    } else {
                        Text("Tap to select picture")
                            .foregroundColor(.white)
                            .font(.headline)
                    }
               }
                onTapGesture {
                    //select an image
                }

                HStack {
                    Text("Intensity")
                    Slider(value: self.$filterIntensity)
                }
                .padding(.vertical)

                HStack {
                    Button("Change Filter") {
                        //change filter
                    }

                    Spacer()

                    Button("Save") {
                        //save the picture
                    }
                }
            }
            .padding([.horizontal, .bottom])
            .navigationBarTitle("Instafilter")
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

Found the problem...missing . in the .onTapGesture. Thanks!