Swift 不断获取错误';类型为'的值';没有成员'';
我已经被困在这个项目中两天了,我想我真的需要帮助 程序只完成了一半,因为我甚至不能让布局工作。我有一个var settings=setting()链接到类setting()。在类设置中,我有不同的变量和func 最初,我让该类放在项目中的另一个swift文件中,但由于swift不断给我“type has no member”错误,我决定将该类放在ContentView.swift中。但即便如此,斯威夫特似乎在类实例中选择性地不识别我的变量,我无法确切地指出原因 e、 g.第一行有错误'value of type'setting'ha no member'$playerChoice''表示它找不到settings.playerChoice,同时在下面的行中没有列出相同的错误以在字符串插值中查找settings.playerChoice。我试着关闭和打开程序,几次切换cmd K重新编译预览,结果都没用 谁能帮我看看到底出了什么问题?多谢各位 我的代码如下:Swift 不断获取错误';类型为'的值';没有成员'';,swift,types,member,Swift,Types,Member,我已经被困在这个项目中两天了,我想我真的需要帮助 程序只完成了一半,因为我甚至不能让布局工作。我有一个var settings=setting()链接到类setting()。在类设置中,我有不同的变量和func 最初,我让该类放在项目中的另一个swift文件中,但由于swift不断给我“type has no member”错误,我决定将该类放在ContentView.swift中。但即便如此,斯威夫特似乎在类实例中选择性地不识别我的变量,我无法确切地指出原因 e、 g.第一行有错误'value
import SwiftUI
import Foundation
class setting {
var playerChoice : Int = 0
var questionCount : Int = 0
var pcRandom : Int = 0
var correctAnswer = 0
var question : String = ""
var buttonArray = [Int]()
var enteredAnswer = ""
var gameRound : Int = 0
var scoreCount : Int = 0
var title2 = ""
var alertTitle = ""
var alertMessage = ""
var alertEndGame = false
func refreshGame() {
pcRandom = Int.random(in: 1 ... 12)
correctAnswer = playerChoice * pcRandom
question = "\(playerChoice) times \(pcRandom) is??"
}
func compareAnswer() {
let answerModified = enteredAnswer
let answerModified2 = answerModified.trimmingCharacters(in: .whitespacesAndNewlines)
if Int(answerModified2) == correctAnswer {
scoreCount += 1
title2 = "RIGHT"
}
else {
title2 = "WRONG"
}
if gameRound > questionCount {
alertTitle = "Game Ended"
alertMessage = "You got \(scoreCount) over \(questionCount)"
alertEndGame = true
}
else {
refreshGame()
}
gameRound += 1
gameRound += 1
}
}
我并没有检查逻辑,但下面的固定代码至少是可编译的,所以希望对大家有所帮助
import SwiftUI
import Combine
class Setting: ObservableObject {
@Published var playerChoice : Int = 0
var questionCount : Int = 0
@Published var questionCountArray = [String]()
var pcRandom : Int = 0
var correctAnswer = 0
var question : String = ""
var buttonArray = [Int]()
@Published var enteredAnswer = ""
var gameRound : Int = 0
var scoreCount : Int = 0
var title2 = ""
var alertTitle = ""
var alertMessage = ""
@Published var alertEndGame = false
func refreshGame() {
pcRandom = Int.random(in: 1 ... 12)
correctAnswer = playerChoice * pcRandom
question = "\(playerChoice) times \(pcRandom) is??"
}
func compareAnswer() {
let answerModified = enteredAnswer
let answerModified2 = answerModified.trimmingCharacters(in: .whitespacesAndNewlines)
if Int(answerModified2) == correctAnswer {
scoreCount += 1
title2 = "RIGHT"
}
else {
title2 = "WRONG"
}
if gameRound > questionCount {
alertTitle = "Game Ended"
alertMessage = "You got \(scoreCount) over \(questionCount)"
alertEndGame = true
}
else {
refreshGame()
}
gameRound += 1
gameRound += 1
}
}
struct ASFContentView: View {
@ObservedObject var settings = Setting()
var body: some View {
VStack {
Section (header: Text("Getting Your Settings Righttt").font(.title)) {
Form {
Stepper(value: $settings.playerChoice, in: 1...13, step: 1) { //value of type 'setting' ha no member '$playerChoice'
if settings.playerChoice == 13 {Text("All")}
else {
Text("Multiplication table \(settings.playerChoice)")
}
}
}
Form {
Text("Number of Questions?")
Picker(selection: $settings.questionCount, label: Text("Number of Questions?")) { //value of type 'setting' has no member '$questionCount'
ForEach (settings.questionCountArray, id: \.self) {Text("\($0)")} } ////value of type 'setting' ha no member '$questionCountArray'
.pickerStyle(SegmentedPickerStyle())
}
Spacer()
Button("Tap to start") {
self.settings.refreshGame()
}
}
Section (header: Text("Game Play").font(.title)){
Text(settings.question)
TextField("Enter your answer", text: $settings.enteredAnswer, onCommit: settings.compareAnswer) //value of type 'setting' ha no member '$enteredAnswer'
Text("Your score is currently \(settings.scoreCount)")
Text("This is game round \(settings.gameRound) out of \(settings.questionCount)")
}
Spacer()
}
.alert(isPresented: $settings.alertEndGame) {
Alert(title: Text("Game Ended"), message: Text("You reached score \(settings.scoreCount) out of \(settings.questionCount)"), dismissButton: .default(Text("Play Again"))) //game doesnt restart and refresh
}
}
}
我并没有检查逻辑,但下面的固定代码至少是可编译的,所以希望对大家有所帮助
import SwiftUI
import Combine
class Setting: ObservableObject {
@Published var playerChoice : Int = 0
var questionCount : Int = 0
@Published var questionCountArray = [String]()
var pcRandom : Int = 0
var correctAnswer = 0
var question : String = ""
var buttonArray = [Int]()
@Published var enteredAnswer = ""
var gameRound : Int = 0
var scoreCount : Int = 0
var title2 = ""
var alertTitle = ""
var alertMessage = ""
@Published var alertEndGame = false
func refreshGame() {
pcRandom = Int.random(in: 1 ... 12)
correctAnswer = playerChoice * pcRandom
question = "\(playerChoice) times \(pcRandom) is??"
}
func compareAnswer() {
let answerModified = enteredAnswer
let answerModified2 = answerModified.trimmingCharacters(in: .whitespacesAndNewlines)
if Int(answerModified2) == correctAnswer {
scoreCount += 1
title2 = "RIGHT"
}
else {
title2 = "WRONG"
}
if gameRound > questionCount {
alertTitle = "Game Ended"
alertMessage = "You got \(scoreCount) over \(questionCount)"
alertEndGame = true
}
else {
refreshGame()
}
gameRound += 1
gameRound += 1
}
}
struct ASFContentView: View {
@ObservedObject var settings = Setting()
var body: some View {
VStack {
Section (header: Text("Getting Your Settings Righttt").font(.title)) {
Form {
Stepper(value: $settings.playerChoice, in: 1...13, step: 1) { //value of type 'setting' ha no member '$playerChoice'
if settings.playerChoice == 13 {Text("All")}
else {
Text("Multiplication table \(settings.playerChoice)")
}
}
}
Form {
Text("Number of Questions?")
Picker(selection: $settings.questionCount, label: Text("Number of Questions?")) { //value of type 'setting' has no member '$questionCount'
ForEach (settings.questionCountArray, id: \.self) {Text("\($0)")} } ////value of type 'setting' ha no member '$questionCountArray'
.pickerStyle(SegmentedPickerStyle())
}
Spacer()
Button("Tap to start") {
self.settings.refreshGame()
}
}
Section (header: Text("Game Play").font(.title)){
Text(settings.question)
TextField("Enter your answer", text: $settings.enteredAnswer, onCommit: settings.compareAnswer) //value of type 'setting' ha no member '$enteredAnswer'
Text("Your score is currently \(settings.scoreCount)")
Text("This is game round \(settings.gameRound) out of \(settings.questionCount)")
}
Spacer()
}
.alert(isPresented: $settings.alertEndGame) {
Alert(title: Text("Game Ended"), message: Text("You reached score \(settings.scoreCount) out of \(settings.questionCount)"), dismissButton: .default(Text("Play Again"))) //game doesnt restart and refresh
}
}
}
不应在变量名前加$。或者,如果您想使用绑定,那么应该声明
@State var playerChoice
我需要双向绑定。如果我删除$,它将出现另一个错误。我将对此进行更新,让您知道确切的错误是什么当您忘记了对这些属性的@State
注释时,不应在变量名前加$。或者,如果您想使用绑定,那么应该声明@State var playerChoice
我需要双向绑定。如果我删除$,它将出现另一个错误。如果您忘记了对这些属性的@State
注释,我将更新此内容,让您知道确切的错误是什么。非常感谢您。我终于用@Published让它工作起来了。我所上的课程并没有教我这一部分,而是希望我使用它。非常感谢。我终于用@Published让它工作起来了。我所上的课程并没有教我这一部分,而是希望我使用它。