我考虑使用switch case来呈现不同的视图。
我知道如何使用
struct searchview : View {
var body: some View {
VStack {
VStack {
if self.speechRecognition.isPlaying == true {
VStack {
Text(self.speechRecognition.recognizedText).bold()
.foregroundColor(.white)
.frame(minWidth: 0, maxWidth: .infinity, minHeight: 0, maxHeight: .infinity, alignment: .center)
.font(.system(size: 50))
.sheet(isPresented: $showSheet) {
self.sheetView
}
}.onAppear {
DispatchQueue.main.asyncAfter(deadline: .now() + 2) {
self.showSheet = true
}
}
}
}.onAppear(perform: getViews)
}
var currentSheetView: String {
var isProductDictEmpty = Global.productDict.isEmpty
var wasTextRecognizedEmpty = self.speechRecognition.recognizedText.isEmpty
var checkTextandDict = (wasTextRecognizedEmpty,isProductDictEmpty)
switch checkTextandDict {
case (true,true):
print("Product dict and Text rec are empty")
return "error"
case (false,false):
print("Yes we are in business")
return "product"
case (true,false):
print("OOPS we didnt catch that")
return "error"
case (false,true):
print("OOPS we didnt catch that")
return "zero match"
}
}
@ViewBuilder
var sheetView: some View {
if currentSheetView == "product" {
ProductSearchView(model: self.searchModel)
}
else if currentSheetView == "zero match" {
zeroResult()
}
else if currentSheetView == "error" {
SearchErrorView()
}
}
}
}
我知道如何使用
.sheet
修改器在按下按钮时呈现模态视图,但是如何能自动通过按钮呈现相应的模态视图?
更新
这些是我正在尝试实现的视图。
struct SearchErrorView: View {
var body: some View {
VStack {
Text("Error!")
Text("Oops we didn't catch that")
}
}
}
struct zeroResult: View {
var body: some View {
Text("Sorry we did not find any result for this item")
}
}
我不确定我错在了哪里。我试图实现以下解决方案,但仍然无法使用 switch case 调用视图。
switch
无法与 @ViewBuilder 一起使用。我已将其替换为if
。请查看更新后的答案。 - undefined