Repeated Crash Reports when I add code to a project

Question

I am doing the Swift Landmarks app tutorial on Xcode 13.2.1 on my 2019 Macbook Pro. I am up to the Working with UI Controls section. Every time I add the following lines of code to ProfileSummary.swift:

@EnvironmentObject var modelData: ModelData

.
.
.

Divider()
         
        VStack(alignment: .leading)
        {
                  Text("Recent Hikes")
                    .font(.headline)

                  HikeView(hike: modelData.hikes[0])
        }

and I then try to view the preview I repeatedly get a crash report and everything stops working. When I remove those lines of code everything goes back to working fine.

The crash report is in this attachment:

Translated Crash Report

^ That is the translated report. If you guys would like the full report I will post it. I am stuck and don't know what to do any help will be appreciated!

406

Posted by

Hegazy2468

Reply

Add a Comment

Answer 1

Could you show the complete code, problem may come from elsewhere. Notably the Preview file. And tell where you get the crash.

Preview struct should be like this:

struct LandmarkDetail_Previews: PreviewProvider {
    
    static let modelData = ModelData()
    
    static var previews: some View {
        
        LandmarkDetail(landmark: modelData.landmarks[0])
            .environmentObject(modelData)
    }
}

It could be you forgot the .environmentObject(modelData)

Note: next time, choose more appropriate tags. That's not an iOS issue, nor Swift, nor Xcode Server but definitely a SwiftUI. That will help you get more and better answers.

Posted by

Claude31

You are right. In ProfileSummary.swift I forgot to put `.environmentObject(ModelData()) in the ProfileSummary_Previews struct. Thank you.

—
Hegazy2468

Add a Comment

Answer 2

Could you show the complete code, problem may come from elsewhere. Notably the Preview file. And tell where you get the crash.

Preview struct should be like this:

struct LandmarkDetail_Previews: PreviewProvider {
    
    static let modelData = ModelData()
    
    static var previews: some View {
        
        LandmarkDetail(landmark: modelData.landmarks[0])
            .environmentObject(modelData)
    }
}

It could be you forgot the .environmentObject(modelData)

Note: next time, choose more appropriate tags. That's not an iOS issue, nor Swift, nor Xcode Server but definitely a SwiftUI. That will help you get more and better answers.

Posted by

Claude31

You are right. In ProfileSummary.swift I forgot to put `.environmentObject(ModelData()) in the ProfileSummary_Previews struct. Thank you.

—
Hegazy2468

Add a Comment

Repeated Crash Reports when I add code to a project

Accepted Reply

Replies