hhbgk的专栏

方法1:NavigationViewimport SwiftUIstruct ContentView: View { var body: some View { NavigationView { List(0..<100) { row in NavigationLink(destination: Text("Detail \(row)")) { Text("Hello wor

import SwiftUIstruct ContentView: View { @State var rowCount = 4 var body: some View { VStack {// List(0..<rowCount){ row in// Text("Row \(row)")// } List(0..<rowC

import SwiftUIstruct ContentView: View { var body: some View {// Text("Hello world").background(Color.red) Text("Hello world").frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .center) .background(Color.blue

import SwiftUIstruct User:Identifiable { let id:String}struct ContentView: View {// @State var showingAlert = false @State var selectedUser:User? var body: some View { VStack { Button("Show Alert") {

import SwiftUIstruct ContentView: View { @State var rating = 0.0 var body: some View {// Circle().stroke(Color.red).frame(width: 100, height: 100, alignment: .center) Circle().stroke(Color.red, lineWidth: 20)//.frame(width: 100, h

import SwiftUIstruct ContentView: View { var body: some View { Text("Hello World").font(.largeTitle).background(Color.green).padding() Text("Hello World").font(.largeTitle).padding().background(Color.green) Text("Hell

import SwiftUIstruct ContentView: View { @State var timeRemaining = 100 let timer = Timer.publish(every: 1, on: .main, in: .common).autoconnect() @State var isActive = true var body: some View { ZStack { Image("backgro

import SwiftUIstruct ContentView: View { var body: some View { CardView(card: Card.example) }}struct Card { let prompt: String let answer: String static var example: Card { Card(prompt: "Who played the 13th Doc

import SwiftUIstruct ContentView: View { var body: some View { Text("Hello").onReceive(NotificationCenter.default.publisher(for: UIApplication.willResignActiveNotification)) { _ in print("Enter background") }

import SwiftUIstruct ContentView: View { let timer = Timer.publish(every: 1, on: .main, in: .common).autoconnect() var body: some View { Text("Hello").onReceive(timer, perform: { time in print("Current time is \(time)

import SwiftUIstruct ContentView: View { var body: some View { ZStack { Rectangle().fill(Color.blue).frame(width: 300, height: 300).onTapGesture(perform: { print("Tap rectangle!") }) //

import SwiftUIimport CoreHapticsstruct ContentView: View { @State var engine:CHHapticEngine? var body: some View {// Text("Hello World").onTapGesture {// simpleSuccess()// } Text("Hellow, World").onAppear(perf

import SwiftUIstruct ContentView: View { @State var currentAmount:CGFloat = 0 @State var finalAmount:CGFloat = 1 var body: some View { Text("Hello World") .scaleEffect(finalAmount + currentAmount) .gesture(

import SwiftUIimport CoreImage.CIFilterBuiltinsstruct ContentView: View { let context = CIContext() let filter = CIFilter.qrCodeGenerator() @State var name = "Tom" @State var emailAddress = "Your@site.com" var body: some View {

import SwiftUIimport UserNotificationsstruct ContentView: View { @State var backgroundColor = Color.red var body: some View { VStack { Button("Request permission") { UNUserNotificationCenter.current().requestA

import SwiftUIstruct ContentView: View { @State var backgroundColor = Color.red var body: some View { VStack { Text("Hello World").padding().background(backgroundColor) Text("Change color").padding().c

import SwiftUIstruct ContentView: View { @ObservedObject var updater = DelayedUpdate() var body: some View { Text("Value is : \(updater.value)") }}class DelayedUpdate: ObservableObject {// @Published var value = 0 var value

import SwiftUIstruct ContentView: View { @State var selectedTab = 0 var body: some View { TabView(selection: $selectedTab){ Text("Tab 1").onTapGesture { selectedTab = 1 }.tabItem { I

import SwiftUIclass User: ObservableObject { @Published var name = "Taylor Swift"}struct EditView: View { ObservableObject var user: User var body: some View{ TextField("Name", text:$user.name) }}struct DisplayView:View {

import SwiftUIimport CoreImage.CIFilterBuiltinsstruct ContentView: View { @State var image:Image? var body: some View { VStack { image?.resizable().scaledToFit() }.onAppear(perform: { loadImage()

import SwiftUIstruct ContentView: View { @State var showingActionSheet = false @State var backgroundColor = Color.white var body: some View { Text("Hello, World").frame(width: 300, height: 300).background(backgroundColor).onTapGe

import SwiftUIclass Order: ObservableObject, Codable { enum CodingKeys: CodingKey { case type, quantity, extraForsting, addSprinkles, name, streetAddress, city, zip } static let types = ["Vanilla", "Strawberry", "Chocolate", "Rainbow"

import SwiftUIstruct ContentView: View { @State var username = "" @State var email = "" var disableForm:Bool { username.count < 5 || email.count < 5 } var body: some View { Form { Section {

import SwiftUIstruct ContentView: View { @State var animationAmount = 0.0 var body: some View { Button("Tap Me") { withAnimation(.interpolatingSpring(stiffness: 5, damping: 1)) { self.animationAmount +

import SwiftUIstruct ContentView: View { @State var animationAmount:CGFloat = 1 var body: some View { print("animationAmount:\(animationAmount)") return VStack{ Stepper("Scale amount", value:$animationAmount.animation(

import SwiftUIstruct ContentView: View { @State var animationAmount:CGFloat = 1 var body: some View { Button("Tap Me") { self.animationAmount += 1 }.padding(50).background(Color.red).foregroundColor(.white).clipShape(C

import SwiftUIextension Bundle { func decode<T:Codable> (_ file:String) -> T { guard let url = url(forResource: file, withExtension: nil) else { fatalError("Failed to locate \(file) in bundle.") } guard l

import SwiftUIstruct Address:Codable { var street: String var city:String}struct User: Codable { var name:String var address:Address}struct ContentView: View { @State var user:User? = nil var body: some View { But

import SwiftUIstruct ContentView: View { var body: some View { NavigationView { List(0..<100) { row in NavigationLink(destination: Text("Detail \(row)")) { Text("Hello world")

import SwiftUIstruct ContentView: View { var body: some View {// ScrollView(.vertical) {// VStack(spacing: 10) {// ForEach(0..<100) {// CustomText("Item \($0)", $0).font(.title)//

import SwiftUIstruct ContentView: View { var body: some View { GeometryReader{ geo in VStack { Image("hello").resizable().aspectRatio(contentMode: .fit) .frame(width: geo.size.width) }

struct ExpenseItem:Identifiable { let id = UUID() let name:String let type:String let amount:Int}class Expenses: ObservableObject { @Published var items = [ExpenseItem]()}struct ContentView: View { @ObservedObject var expenses =

import SwiftUIstruct User : Codable { var firstName:String var lastName:String }struct ContentView: View { @State var user = User(firstName: "Taylor", lastName: "Swift") @State var tapCount = 0 var body: some View {

import SwiftUIstruct ContentView: View { @State var numbers = [Int]() @State var currentNumber = 1 var body: some View { NavigationView { VStack { List { ForEach(numbers, id:\.self)

import SwiftUIstruct ContentView: View { @State var showingSheet = false var body: some View { Button("Show Sheet") { showingSheet.toggle() }.sheet(isPresented: $showingSheet) { SecondView(name

import SwiftUIstruct ContentView: View { var body: some View { List { Section(header: Text("Header")) { Text("Hello") Text("World") } Section(header: Text("H

import SwiftUIstruct ContentView: View { @State var selection = 0 var body: some View { let binding = Binding(get: {selection}, set: {selection = $0} ) return VStack { Picker("Select a number", selection:

import SwiftUIstruct ContentView: View { @State var sleepAmount = 9.0 @State var wakeUp = Date() var body: some View { Stepper(value: $sleepAmount, in:4...12, step:0.25) { Text("\(sleepAmount, specifier: "%.2f") hour

struct ContentView: View { var body: some View { GStack(rows: 4, cols: 4) { row, col in HStack { Image(systemName: "\(row*4+col).circle") Text("R\(row) C\(col)") } }

import SwiftUIstruct ContentView: View { var body: some View { VStack(spacing: 10) { Text("Hello").modifier(CapsuleText()) Text("World").titleStyle() Color.blue.frame(width: 300, height: 300).watermarked(t