在我的代码中,我有这个:
var body: some View {
NavigationView {
VStack(spacing: 0) {
ScrollView(.vertical, showsIndicators: false) {
VStack(spacing: 18) {
ScrollView(.horizontal, showsIndicators: false){
HStack(spacing: 20){
Text("teste")
.frame(height: 180)
.frame(width: 330)
.background(Color.blue)
.cornerRadius(15)
Text("teste")
.frame(height: 180)
.frame(width: 330)
.background(Color.green)
.cornerRadius(15)
Text("teste")
.frame(height: 180)
.frame(width: 330)
.background(Color.pink)
.cornerRadius(15)
}.padding(.horizontal, 12)
}
ForEach(specialtyList, id: \.type){ specialty in
NavigationLink (destination: SearchBar(item: specialty)){
VStack(spacing: 18) {
HStack{
Text(specialty.type).foregroundColor(.white)
specialty.image
.renderingMode(.original)
.resizable()
.frame(width: 35, height: 35)
}.frame(minWidth: 0, idealWidth: 350, maxWidth: .infinity)
.frame(height: 100)
}
}.padding(.horizontal)
.background(specialty.color).cornerRadius(45)
}.padding(.horizontal)
}
.padding(.top)
.padding(.bottom)
}
}.navigationBarTitle("Buscar")
}.accentColor(.black)
}
我希望,根据ForEach中按下的按钮,下一个视图的标题是按钮的名称。现在,每个按钮上显示的名称是“ Buscar” 我试过在ForEach之后和NavigationLink之前实现NavigationView,但是ForEach漏洞消失了。基本上,我希望所按下的Text(specialty.type)是导航栏后退按钮的名称。有什么想法吗?
答案 0 :(得分:0)
这是一个可能方法的演示-想法是在激活导航链接时更改导航栏标题,然后在背面重置。
使用Xcode 12 / iOS 14准备并测试了演示
struct DemoView: View {
@State private var barTitle = ""
@State private var selectedType = ""
@State private var isActive = false
let types = ["Type1", "Type2", "Type3"]
var body: some View {
NavigationView {
VStack {
ForEach(types, id: \.self) { type in
Button(type) {
self.isActive = true
self.selectedType = type
self.barTitle = type // comment for variant 2
}
}
}
.background(
NavigationLink(destination:
Text(selectedType)
// .onAppear { self.barTitle = self.selectedType } // variant 2
, isActive: $isActive) { EmptyView() }
)
.navigationBarTitle(barTitle)
.onAppear {
self.barTitle = "Buscar"
}
}
}
}