如何解决我的搜索栏中的文本字段不允许输入文本 (swiftUI)
我尝试在我的应用程序中实现一个搜索栏（使用 swiftUI），它在我构建应用程序时显示。但是，它不允许我在实际的文本字段中输入。我的代码如下。我一直在寻找这个问题的解决方案，但似乎在我的代码中看不到任何问题。我的 TextField 有问题吗？
搜索栏代码 -
import SwiftUI
struct SearchBar: View {
@Binding var text: String
@State private var isEditing = false
var body: some View {
HStack {
TextField("Search...",text: $text)
// .foregroundColor(Color("Teal"))
// .background(Color("Grey"))
.overlay(
HStack {
Image(systemName: "magnifyingglass")
.foregroundColor(Color(UIColor.systemGray3))
.frame(minWidth:0,maxWidth: .infinity,alignment: .leading)
.padding(EdgeInsets.init(top: 0,leading: 30,bottom: 0,trailing: 20))
// Search icon
if isEditing {
Button(action: {
self.text = ""
},label: {
Image(systemName: "multiply.circle")
.foregroundColor(Color(UIColor.systemGray3))
.padding(EdgeInsets.init(top: 0,leading: 0,trailing: 30))
// Delete button
})
}
}
).onTapGesture {
self.isEditing = true
}
if isEditing{
Button(action: {
self.isEditing = false
UIApplication.shared.sendAction(#selector(UIResponder.resignFirstResponder),to: nil,from: nil,for: nil)
// Hide delete button when search bar is not selected
}){
}
}
}
}
}
在我的视图中实现搜索栏的代码 -
import SwiftUI
struct BusinessList: View {
@EnvironmentObject var modelData: ModelData
@State private var showFavoritesOnly = false
@State var searchText = ""
var filteredBusinesses: [Business] {
modelData.businesses.filter { business in
(!showFavoritesOnly || business.isFavorite)
}
}
var body: some View {
NavigationView {
ScrollView {
LazyVStack {
VStack {
SearchBar(text: $searchText)
.padding(.bottom)
.padding(.top)
.padding(.top)
.padding(.top)
.padding(.top)
// Search bar won't show text when 'typed into'
ScrollView(.horizontal,showsIndicators: false) {
HStack {
Button(action: {
showFavoritesOnly = true
}) {
Text("Favourites")
.font(.caption)
.fontWeight(.medium)
.foregroundColor(Color.white)
.frame(width: 100.0,height: 30)
.background(Color("Teal"))
// How the button looks
.cornerRadius(25)
.zIndex(1)
.textCase(.uppercase)
.padding(EdgeInsets.init(top: 0,leading: 20,trailing: 0))
}
Button(action: {
}) {
Text("Hospitality")
.font(.caption)
.fontWeight(.medium)
.foregroundColor(Color.white)
.frame(width: 100.0,height: 30)
.background(Color("Teal"))
// How the button looks
.cornerRadius(25)
.zIndex(1)
.textCase(.uppercase)
}
Button(action: {
}) {
Text("Retail")
.font(.caption)
.fontWeight(.medium)
.foregroundColor(Color.white)
.frame(width: 100.0,height: 30)
.background(Color("Teal"))
// How the button looks
.cornerRadius(25)
.zIndex(1)
.textCase(.uppercase)
}
Button(action: {
}) {
Text("Lifestyle")
.font(.caption)
.fontWeight(.medium)
.foregroundColor(Color.white)
.frame(width: 110.0,height: 30)
.background(Color("Teal"))
// How the button looks
.cornerRadius(25)
.zIndex(1)
.textCase(.uppercase)
}
}
.padding(.bottom)
}
}
.background(Color(UIColor.white))
.shadow(radius: 6)
.padding(.bottom)
ForEach(filteredBusinesses) { business in
NavigationLink(destination: BusinessDetail(business: business)) {
BusinessRow(business: business)
}
}
}
}
.navigationBarHidden(true)
.ignoresSafeArea()
}
}
}
struct BusinessList_Previews: PreviewProvider {
static var previews: some View {
BusinessList()
}
}
解决方法
您的代码对我有用，对颜色进行了细微的更改，没什么大不了的。也许颜色没有显示你的打字，但文本在那里。 这是我做的测试：
import SwiftUI
@main
struct TestApp: App {
var body: some Scene {
WindowGroup {
ContentView()
}
}
}
struct SearchBar: View {
@Binding var text: String
@State private var isEditing = false
var body: some View {
HStack {
TextField("Search...",text: $text)
// .foregroundColor(Color("Teal"))
// .background(Color("Grey"))
.overlay(
HStack {
Image(systemName: "magnifyingglass")
.foregroundColor(.gray)
.frame(minWidth:0,maxWidth: .infinity,alignment: .leading)
.padding(EdgeInsets.init(top: 0,leading: 30,bottom: 0,trailing: 20))
// Search icon
if isEditing {
Button(action: {
self.text = ""
},label: {
Image(systemName: "multiply.circle")
.foregroundColor(.gray)
.padding(EdgeInsets.init(top: 0,leading: 0,trailing: 30))
// Delete button
})
}
}
).onTapGesture {
self.isEditing = true
}
if isEditing{
Button(action: {
self.isEditing = false
UIApplication.shared.sendAction(#selector(UIResponder.resignFirstResponder),to: nil,from: nil,for: nil)
// Hide delete button when search bar is not selected
}){
}
}
}
}
}
struct ContentView: View {
@State var searchText = ""
var body: some View {
SearchBar(text: $searchText)
.frame(width: 222,height: 55).padding(.horizontal,20)
.border(.red)
}
}
编辑：
当你删除时，你的新代码对我有用
.shadow(radius: 6)
和
.ignoresSafeArea()
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