在 SwiftUI 中修改 List 的背景颜色?
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【中文标题】在 SwiftUI 中修改 List 的背景颜色?【英文标题】:Modify the background colour of a List in SwiftUI? 【发布时间】:2022-01-03 17:16:21 【问题描述】:我想将背景白色更改为 SwiftUI 中列表的另一种颜色。
struct ListCustom: View
var body: some View
ContentView1()
struct ContentView1: View
@State var items = Array(1...20)
init()
UITableView.appearance().backgroundColor = UIColor.init(.red)
UITableViewCell.appearance().backgroundColor = UIColor.init(.red)
let color = UIView()
color.backgroundColor = UIColor.clear
UITableViewCell.appearance().selectedBackgroundView = color
var idetifca = UUID()
var body: some View
VStack
Button("Shuffle")
self.items.shuffle()
List(items, id: \.self) _ in
Screen(Array1: $items).listRowBackground(Color.green)
.id(idetifca).listStyle(PlainListStyle()).background(Color.blue)
.listRowBackground(Color.blue)
struct Screen: View
@Binding var Array1 : [Int]
var body: some View
Group
if self.Array1.count > 0
SectionTitleUI(titleStrng: "Testing", rightTitleString: "", countShow: 0)
ForEach(self.Array1.indices, id: \.self) notification in
NotificationView(notificationInfo: self.Array1[notification])
.listRowBackground(Color.red)
.navigationBarHidden(false)
import SwiftUI
struct NotificationView: View
@State var notificationInfo = 0
var body: some View
VStack
HStack(alignment:.top)
VStack(alignment: .leading, spacing: 10)
HStack(alignment:.top)
Text("Text").onAppear
print("rrrr")
.foregroundColor(.black)
.fixedSize(horizontal: false, vertical: true)
Group
Text("Text111")
.font(.system(size: 15.0))
.foregroundColor(.gray)
.frame(maxWidth: .infinity ,alignment: .topLeading)
.padding(.all)
Divider()
.background(Color.white)
.offset(x: 0, y:0)
.background(notificationInfo == 0 ? Color.red : Color.clear).listRowBackground(Color.red)
struct SectionTitleUI: View
var titleStrng = "2"
var rightTitleString = "3"
var countShow = 4
var comeFromPublicRide = false
var changeFontSize = false
var action: (() -> Void)?
var body: some View
VStack(alignment: .leading)
HStack
Text(titleStrng).font(.system(size:changeFontSize == true ? 15 : 18, weight: .bold, design: .default))
.foregroundColor(.white)
.padding(.leading)
.fixedSize(horizontal: false, vertical: true)
if countShow != 0
Text("\(countShow)").font(.system(size: 16, weight: .bold, design: .default))
.foregroundColor(.gray)
.padding(.leading,0)
Spacer()
.padding(5)
.frame(height: 45)
.background(Color.red)
.listRowBackground(Color.red)
输出:-
当用户运行应用程序时,列表颜色未在所有单元格中完美设置,自动显示白色。当用户滚动列表时,自动改变我设置的颜色。
问题:-如何一次性更改完整列表颜色?
有人可以向我解释如何更改列表颜色,我已经尝试使用上面的代码但还没有结果。
任何帮助将不胜感激。
提前致谢。
【问题讨论】:
【参考方案1】:删除ContentView1
的init
可以解决此问题。
问题是由您的代码设置selectedBackgroundView
引起的,但无论如何您都不需要init
,因为它仍然可以按您的预期运行。
【讨论】:
好的,非常感谢@George。我将删除代码并尽快更新您。【参考方案2】:给你!您只是在任何地方设置了列表行背景颜色...我认为您因此而感到困惑。
您只需在 Screen 结构中设置列表行背景颜色。希望你能理解我所做的改变。
import SwiftUI
struct ContentView: View
@State var items = Array(1...20)
var idetifca = UUID()
var body: some View
VStack
Button("Shuffle")
self.items.shuffle()
List(items, id: \.self) _ in
Screen(Array1: $items)
.id(idetifca)
.listStyle(PlainListStyle())
struct Screen: View
@Binding var Array1 : [Int]
var body: some View
Group
if self.Array1.count > 0
SectionTitleUI(titleStrng: "Testing", rightTitleString: "", countShow: 0)
.listRowBackground(Color.red)
ForEach(self.Array1.indices, id: \.self) notification in
NotificationView(notificationInfo: self.Array1[notification])
.listRowBackground(Color.red)
.navigationBarHidden(false)
struct NotificationView: View
@State var notificationInfo = 0
var body: some View
VStack
HStack(alignment:.top)
VStack(alignment: .leading, spacing: 10)
HStack(alignment:.top)
Text("Text").onAppear
print("rrrr")
.foregroundColor(.black)
.fixedSize(horizontal: false, vertical: true)
Group
Text("Text111")
.font(.system(size: 15.0))
.foregroundColor(.gray)
.frame(maxWidth: .infinity ,alignment: .topLeading)
.padding(.all)
Divider()
.background(Color.white)
.offset(x: 0, y:0)
.background(notificationInfo == 0 ? Color.red : Color.clear)
struct SectionTitleUI: View
var titleStrng = "2"
var rightTitleString = "3"
var countShow = 4
var comeFromPublicRide = false
var changeFontSize = false
var action: (() -> Void)?
var body: some View
VStack(alignment: .leading)
HStack
Text(titleStrng)
.font(.system(size:changeFontSize == true ? 15 : 18, weight: .bold, design: .default))
.foregroundColor(.white)
.padding(.leading)
.fixedSize(horizontal: false, vertical: true)
if countShow != 0
Text("\(countShow)")
.font(.system(size: 16, weight: .bold, design: .default))
.foregroundColor(.gray)
.padding(.leading,0)
Spacer()
.padding(5)
.frame(height: 45)
struct ContentView_Previews: PreviewProvider
static var previews: some View
ContentView()
有什么问题可以问我。
【讨论】:
谢谢@Alexander,您的回答也对我有用。以上是关于在 SwiftUI 中修改 List 的背景颜色?的主要内容,如果未能解决你的问题,请参考以下文章