我正在使用新的iOS框架SwiftUI实现一个小应用程序。 我正在使用
@EnvironmentObject
将我的数据绑定到视图。 一切正常,但画布崩溃并且没有显示任何内容。为什么?struct CompetitionsListSwiftUIView : View {
@EnvironmentObject var competitionsViewModel: CompetitionsViewModel
var body: some View {
List(self.competitionsViewModel.competitions.identified(by: \.id)) { competition in
CompetitionCellSwiftUIView(competition: competition)
}
}
}
#if DEBUG
struct CompetitionsListSwiftUIView_Previews : PreviewProvider {
static var previews: some View {
CompetitionsListSwiftUIView()
}
}
#endif
< p >Canvas的错误信息是这样的:
Error Domain=render service Code=12 "Rendering service was interrupted" UserInfo={NSLocalizedDescription=Rendering service was interrupted}