小编She*_* M.的帖子

我使用 SwiftUI 创建了一个应用程序，当我尝试显示按钮时，会出现以下错误消息：

Thread 1: Fatal error: No ObservableObject of type ModelData found. A View.environmentObject(_:) for ModelData may be missing as an ancestor of this view.

当我尝试使用 an@EnvironmentObject尝试显示我的应用程序的视图之一时，会发生这种情况。

我的代码是

struct OpportunityDetail: View {
    @EnvironmentObject var modelData: ModelData
    var opportunity: Opportunity
    
    var opportunityIndex: Int {
            modelData.opportunities.firstIndex(where: { $0.id == opportunity.id })!
        }
    
    
    var body: some View {
        ScrollView {
            
            MapView(coordinate: opportunity.locationCoordinate)
                .frame(height: 300)
                .ignoresSafeArea(edges: .top)
            
            CircleImage(opportunity: opportunity)
                .offset(y: -130)
                .padding(.bottom, -130)
            
            
            VStack {
                VStack(alignment: .leading) {
                    Text(opportunity.position)
                        .font(.title)
                    HStack …