我有三个列表视图。结构体MainMenuView: View { @EnvironmentObject var dataModel:DM
var body: some View {
return NavigationView{
List {
Matchup()
GameSettings()
EnteringGame()
}
}
}
在Matchup()函数内部
struct Matchup: View {
@EnvironmentObject var dataModel: DM
var body: some View {
Section(header: Text("MATCH-UP")
.fontWeight(.heavy)
.foregroundColor(Color("TPLightGrey"))
) {
NavigationLink(destination: TrendSingleSelect(
title: .constant("TEAM"),
col: .constant(self.dataModel.queryColumnTeam1),
items: .constant(self.dataModel.team1Values) ,
selection: self.$dataModel.team1ListValue
)) {
HStack {
Text("TEAM")
Spacer()
if dataModel.team1ListValue.count == 0 {
Text("IS ANY").foregroundColor(Color("TPLightGrey"))
} else {
Text( self.dataModel.team1ListValue.joined(separator: ", ")).foregroundColor(Color("TPOrange"))
}
}
}
}
.listRowBackground(Color("TPDarkGrey"))
.font(.system(size: 14))
.navigationBarTitle("", displayMode: .inline)
.navigationBarHidden(true)
}
注意我隐藏了导航栏。当用户点击一行时,我想推入一个导航。这是最终的界面:
var body: some View {
return VStack {
List {
ForEach(self.items, id: \.self) { item in
SingleSelectionRow(title: item, isSelected: self.selection.contains(item)) {
if self.selection.contains(item) {
self.selection = []
}
else {
self.selection = [item]
}
self.queryCallback()
}
.listRowBackground(Color("TPDarkGrey"))
}//ForEach
}//list
.font(.system(size: 14))
}
.navigationBarHidden(false)
.navigationBarTitle(title)
.navigationBarItems(trailing:
Button(action: {
// Actions
self.reset()
}, label: {
Text("Clear")
}
)
)
}
发生的情况是:当我点击"sell"时,我推动了那个区域。然而,当它被推入时,我看到了navBar,然后它就被折叠了。但是,当我再次点击视图中的任何内容以触发视图重新加载时,它会出现。
是什么导致了navbar的折叠?