Swiftui 如何返回带有ViewModifier的视图
我想根据数组中字段的内容返回一个视图。这是可行的,但如果我尝试向视图添加ViewModifier,就会遇到问题。这行不通Swiftui 如何返回带有ViewModifier的视图,swiftui,return-type,viewmodifier,Swiftui,Return Type,Viewmodifier,我想根据数组中字段的内容返回一个视图。这是可行的,但如果我尝试向视图添加ViewModifier,就会遇到问题。这行不通 struct CodesView: View { var body: some View { ScrollView{ ForEach(0 ..< codes.count) {idx in Result(selector: self.codes[idx].Zeile)
struct CodesView: View {
var body: some View {
ScrollView{
ForEach(0 ..< codes.count) {idx in
Result(selector: self.codes[idx].Zeile)
}
}
}
}
struct Result: View{
var selector: String
var body: some View{
switch selector {
case "->Text1":
return VStack{
Text("Lorem ipsum dolor sit amet")
.bold()
}
// serval other case will follow...
default:
return VStack{
Text("\(selector)")
.frame(width: 350, alignment: .leading) // line throw an error
.font(.system(.body, design: .monospaced)) // line throw an error
}
}
}
}
结构代码视图:视图{
var body:一些观点{
滚动视图{
ForEach(0..我需要如何声明函数才能使用ViewModifier获得结果?对于不同的返回视图,我需要不同的布局。以下内容解决了您的问题
struct Result: View {
var selector: String
var body: some View {
Group {
if self.selector == "->Text1" {
VStack {
Text("Lorem ipsum dolor sit amet")
.bold()
}
} else {
VStack {
Text("\(selector)")
.frame(width: 350, alignment: .leading)
.font(.system(.body, design: .monospaced))
}
}
}
}
}
不能在正文中使用switch语句。这里只允许简单的“如果” 但请在此处检查此答案,它有助于: 例如:
enum T {
case a
case b
}
struct ContentView: View {
var a : T = .a
var body : some View {
Group { () -> Text in
switch a {
case .a:
return Text("a")
case .b:
return Text("b")
}
}
}
}