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ソースコード source code

下記アプリの主要なソースコードを公開しています。アプリ開発の参考になれば幸いです。

画像等が別途必要ですので下記情報のみでアプリが完成するものではありません。 アプリは少しずつ機能拡張していますのでストア公開されているアプリと内容が異なる場合があります。 コードはコピーして自由にお使いいただけます。ただし著作権は放棄しておりませんので全部の再掲載はご遠慮ください。部分的に再掲載したり、改変して再掲載するのは構いません。 自身のアプリ作成の参考として個人使用・商用問わず自由にお使いいただけます。 コード記述のお手本を示すものではありません。ミニアプリですので変数名などさほど気遣いしていない部分も有りますし間違いも有るかと思いますので参考程度にお考え下さい。 他の賢者の皆様が公開されているコードを参考にした箇所も含まれます。iOSアプリ開発の熟練者が書いたコードではありません。 エンジニア向け技術情報共有サービスではありませんので説明は省いています。ご了承ください。 GitHubなどへの公開は予定しておりません。

下記コードの最終ビルド日： 2021-04-23

ConstValue.swift

//
//  ConstValue.swift
//  WheelLotteryMachine
//
//  Created by akira ohmachi on 2021/04/02.
//

import SwiftUI

class ConstValue: ObservableObject {

    //background
    static let colorBg: Color = Color.init(red:0,green:0.613,blue:0.203)
    
    //button color
    static let colorStart: Color = Color.init(red:0.238, green:0.77, blue:0.387)
    static let colorSetting: Color = Color.init(red:0.543, green:0.77, blue:0.289)
}

ContentView.swift

//
//  ContentView.swift
//  WheelLotteryMachine
//
//  Created by akira ohmachi on 2021/04/02.
//

import SwiftUI
import GoogleMobileAds

struct ContentView: View {
    @EnvironmentObject var pub: PublicManager
    @State private var garaponImageName: String = "garapon001"
    @State private var garaponPointer: Int = 0
    @State private var busyFlag: Bool = false   //実行中
    @State private var destroyFlag: Bool = false
    @State private var emptyTextAlpha: Double = 0.0
    @State private var resultTextName: String = ""  //当選商品名
    //PIN input
    @State private var isInputPin = false   //trueでPIN入力ダイアログが表示される
    @State var pin: String = "" //ダイアログで入力したPIN
    //
    @State private var ballImageName: String = "ball_white"   //画像名
    @State private var ballPosition: CGPoint = CGPoint(x: 0, y: 0)
    @State private var ballAlpha: Double = 0.0
    private let ballNames: Array<String> = [
        "ball_gold",
        "ball_silver",
        "ball_purple",
        "ball_blue",
        "ball_green",
        "ball_yellow",
        "ball_red",
        "ball_white",
    ]
    struct BallPosition {
        let time: Int
        let x: Int
        let y: Int
        init(time: Int, x: Int, y: Int) {
            self.time = time
            self.x = x
            self.y = y
        }
    }
    private var ballPositions: Array<BallPosition> = [
        BallPosition(time:  95, x: 440, y: 540),
        BallPosition(time:  96, x: 457, y: 558),
        BallPosition(time:  97, x: 474, y: 589),
        BallPosition(time:  98, x: 492, y: 630),
        BallPosition(time:  99, x: 508, y: 620),
        BallPosition(time: 100, x: 527, y: 614),
        BallPosition(time: 101, x: 547, y: 616),
        BallPosition(time: 102, x: 567, y: 627),
        BallPosition(time: 103, x: 586, y: 651),
        BallPosition(time: 104, x: 601, y: 647),
        BallPosition(time: 105, x: 617, y: 650),
        BallPosition(time: 106, x: 634, y: 657),
        BallPosition(time: 107, x: 646, y: 650),
        BallPosition(time: 108, x: 657, y: 653),
        BallPosition(time: 109, x: 669, y: 665),
        BallPosition(time: 110, x: 680, y: 665),
    ]
    
    var body: some View {
        NavigationView {
            GeometryReader { bodyView in
                VStack(spacing: 0) {
                    HStack(spacing: 0) {
                        Button(action:{
                            self.garaponRotate()
                        }){
                            Text("drawLot")
                                .frame(width:bodyView.size.width / 4 * 3, height:100, alignment: .center)
                                .background(ConstValue.colorStart)
                                .foregroundColor(Color.white)
                        }
                        Rectangle().fill(Color.white).frame(width: 1,height: 100)
                        NavigationLink(destination: SettingView(),isActive: self.$pub.isSetting) {
                            Button(action:{
                                if self.pub.pin == "" {
                                    self.pin = ""
                                    self.buttonActionSetting()
                                } else {
                                    self.isInputPin = true
                                }
                            }){
                                Text("setting")
                                    .frame(width:bodyView.size.width / 4, height:100, alignment: .center)
                                    .background(ConstValue.colorSetting)
                                    .foregroundColor(Color.white)
                                TextFieldAlertView(
                                    text: $pin,
                                    isShowingAlert: $isInputPin,
                                    placeholder: "",
                                    isSecureTextEntry: false,
                                    title: "PIN",
                                    message: "Enter PIN",
                                    leftButtonTitle: "Cancel",
                                    rightButtonTitle: "OK",
                                    leftButtonAction: {
                                        self.pin = ""
                                    },
                                    rightButtonAction: {
                                        self.buttonActionSetting()
                                    }
                                )
                            }
                        }
                        .background(ConstValue.colorSetting)
                    }
                    .frame(width:bodyView.size.width, height:100)
                    Rectangle().fill(Color.white).frame(width: bodyView.size.width,height: 1)
                    ZStack(alignment: .bottom) {
                        ScrollView {
                            Text("empty")
                                .foregroundColor(Color.white)
                                .opacity(self.emptyTextAlpha)
                                .padding(10)
                            Image(self.garaponImageName)
                                .resizable()
                                .frame(width: bodyView.size.width, height: bodyView.size.width, alignment: .center)
                                .overlay (
                                    Text(self.resultTextName)
                                        .frame(width:bodyView.size.width, height:bodyView.size.width, alignment: .bottom)
                                        .foregroundColor(Color.white)
                                        .font(.title)
                                        .opacity(self.ballAlpha)
                                )
                                .overlay(
                                    Image(self.ballImageName)
                                        .resizable()
                                        .frame(width:bodyView.size.width / 20, height:bodyView.size.width / 20, alignment: .center)
                                        .position(x: bodyView.size.width * self.ballPosition.x / 900, y: bodyView.size.width * self.ballPosition.y / 900)
                                        .opacity(self.ballAlpha)
                                        .animation(.none)
                                )
                            Spacer(minLength: 150)
                        }
                        HStack(spacing: 0) {
                            Spacer(minLength: 0)
                            PublicManager.AdView().frame(maxWidth: bodyView.size.width, maxHeight: 50)
                            Spacer(minLength: 0)
                        }.background(Color(red:0.2,green:0.2,blue:0.2))
                    }
                }
                .background(ConstValue.colorBg)
                //.navigationBarTitle("")
                .navigationBarHidden(true)
            }
        }
        .navigationViewStyle(StackNavigationViewStyle())
        .onDisappear {     //アプリ終了時
            self.destroyFlag = true
        }
    }
    
    //選択肢を初期化
    private func initLotteryItems() {
        if self.pub.nameGold == ""
                && self.pub.nameSilver == ""
                && self.pub.namePurple == ""
                && self.pub.nameBlue == ""
                && self.pub.nameGreen == ""
                && self.pub.nameYellow == ""
                && self.pub.nameRed == ""
                && self.pub.nameWhite == ""
        { //initial
            self.pub.nameGold = NSLocalizedString("rank1", comment: "rank1")
            self.pub.nameSilver = NSLocalizedString("rank2", comment: "rank2")
            self.pub.namePurple = NSLocalizedString("rank3", comment: "rank3")
            self.pub.nameBlue = NSLocalizedString("rank4", comment: "rank4")
            self.pub.nameGreen = NSLocalizedString("rank5", comment: "rank5")
            self.pub.nameYellow = NSLocalizedString("rank6", comment: "rank6")
            self.pub.nameRed = NSLocalizedString("rank7", comment: "rank7")
            self.pub.nameWhite = NSLocalizedString("rank8", comment: "rank8")
            self.pub.qtyGold = "1"
            self.pub.qtySilver = "1"
            self.pub.qtyPurple = "2"
            self.pub.qtyBlue = "3"
            self.pub.qtyGreen = "10"
            self.pub.qtyYellow = "20"
            self.pub.qtyRed = "100"
            self.pub.qtyWhite = "300"
        }
    }
    
    //goto setting
    private func buttonActionSetting() {
        if self.busyFlag {
            return
        }
        if self.pin != self.pub.pin {
            self.pin = ""
            return
        }
        self.emptyTextAlpha = 0.0
        self.pin = ""
        self.initLotteryItems()
        self.pub.tmpNameGold = self.pub.nameGold
        self.pub.tmpNameSilver = self.pub.nameSilver
        self.pub.tmpNamePurple = self.pub.namePurple
        self.pub.tmpNameBlue = self.pub.nameBlue
        self.pub.tmpNameGreen = self.pub.nameGreen
        self.pub.tmpNameYellow = self.pub.nameYellow
        self.pub.tmpNameRed = self.pub.nameRed
        self.pub.tmpNameWhite = self.pub.nameWhite
        self.pub.tmpQtyGold = self.pub.qtyGold
        self.pub.tmpQtySilver = self.pub.qtySilver
        self.pub.tmpQtyPurple = self.pub.qtyPurple
        self.pub.tmpQtyBlue = self.pub.qtyBlue
        self.pub.tmpQtyGreen = self.pub.qtyGreen
        self.pub.tmpQtyYellow = self.pub.qtyYellow
        self.pub.tmpQtyRed = self.pub.qtyRed
        self.pub.tmpQtyWhite = self.pub.qtyWhite
        self.pub.tmpPin = self.pub.pin
        self.pub.isSetting = true
    }

    //start button on click
    private func garaponRotate() {
        if self.busyFlag {
            return
        }
        self.busyFlag = true
        self.initLotteryItems()
        self.resultTextName = ""
        self.ballPosition = CGPoint(x: self.ballPositions[0].x, y: self.ballPositions[0].y)
        self.ballAlpha = 0.0
        //ballを選ぶ
        let qtys: Array<Int> = [
            NumberFormatter().number(from: "0" + self.pub.qtyGold) as! Int,
            NumberFormatter().number(from: "0" + self.pub.qtySilver) as! Int,
            NumberFormatter().number(from: "0" + self.pub.qtyPurple) as! Int,
            NumberFormatter().number(from: "0" + self.pub.qtyBlue) as! Int,
            NumberFormatter().number(from: "0" + self.pub.qtyGreen) as! Int,
            NumberFormatter().number(from: "0" + self.pub.qtyYellow) as! Int,
            NumberFormatter().number(from: "0" + self.pub.qtyRed) as! Int,
            NumberFormatter().number(from: "0" + self.pub.qtyWhite) as! Int,
        ]
        var ballSum: Int = 0
        for i in 0 ..< qtys.count {
            ballSum += qtys[i]
        }
        if ballSum == 0 {    //選ぶものが無くなった
            emptyTextAlpha = 1.0
            self.busyFlag = false
            return
        }
        var remainNum: Int = Int.random(in: 0 ..< ballSum)
        var choiceColor: Int = -1
        for i in 0 ..< qtys.count {
            if qtys[i] != 0 {
                if qtys[i] < remainNum {
                    remainNum -= qtys[i]
                } else {
                    choiceColor = i     //この色に決定
                    break
                }
            }
        }
        //
        self.subtractBallNum(num: choiceColor)    //選んだballを消費する
        self.ballImageName = self.ballNames[choiceColor]
        switch choiceColor {
            case 0: self.resultTextName = self.pub.nameGold
            case 1: self.resultTextName = self.pub.nameSilver
            case 2: self.resultTextName = self.pub.namePurple
            case 3: self.resultTextName = self.pub.nameBlue
            case 4: self.resultTextName = self.pub.nameGreen
            case 5: self.resultTextName = self.pub.nameYellow
            case 6: self.resultTextName = self.pub.nameRed
            case 7: self.resultTextName = self.pub.nameWhite
            default: break
        }
        //
        self.garaponPointer = 0
        self.timeLineAnimation()
    }

    //garapon animation
    private func timeLineAnimation() {
        withAnimation {
            if self.destroyFlag {
                return
            }
            self.garaponPointer += 1
            if self.garaponPointer > 120 {
                self.busyFlag = false
                return
            }
            self.setImageName()
            self.ballMove()
            DispatchQueue.global().async {
                Thread.sleep(forTimeInterval: 0.02)
                DispatchQueue.main.sync {
                    if self.destroyFlag == false {
                        self.timeLineAnimation()
                    }
                }
            }
        }
    }

    //set garapon image
    private func setImageName() {
        self.garaponImageName = "garapon" + String(format: "%03d",self.garaponPointer)
    }

    //ball move
    private func ballMove() {
        if self.garaponPointer < 95 || self.garaponPointer > 110 {
            return
        }
        if self.garaponPointer == 95 {
            self.ballAlpha = 1.0
        }
        for i in 0 ..< self.ballPositions.count {
            if self.ballPositions[i].time == self.garaponPointer {
                self.ballPosition = CGPoint(x: self.ballPositions[i].x, y: self.ballPositions[i].y)
                break
            }
        }
    }
    
    private func subtractBallNum(num: Int) {
        switch num {
        case 0:
            let n: Int = NumberFormatter().number(from: "0" + self.pub.qtyGold) as! Int
            self.pub.qtyGold = String(n - 1)
        case 1:
            let n: Int = NumberFormatter().number(from: "0" + self.pub.qtySilver) as! Int
            self.pub.qtySilver = String(n - 1)
        case 2:
            let n: Int = NumberFormatter().number(from: "0" + self.pub.qtyPurple) as! Int
            self.pub.qtyPurple = String(n - 1)
        case 3:
            let n: Int = NumberFormatter().number(from: "0" + self.pub.qtyBlue) as! Int
            self.pub.qtyBlue = String(n - 1)
        case 4:
            let n: Int = NumberFormatter().number(from: "0" + self.pub.qtyGreen) as! Int
            self.pub.qtyGreen = String(n - 1)
        case 5:
            let n: Int = NumberFormatter().number(from: "0" + self.pub.qtyYellow) as! Int
            self.pub.qtyYellow = String(n - 1)
        case 6:
            let n: Int = NumberFormatter().number(from: "0" + self.pub.qtyRed) as! Int
            self.pub.qtyRed = String(n - 1)
        case 7:
            let n: Int = NumberFormatter().number(from: "0" + self.pub.qtyWhite) as! Int
            self.pub.qtyWhite = String(n - 1)
        default: break
        }
    }
    
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        Group {
            ContentView().environmentObject(PublicManager())
        }
    }
}

PublicManager.swift

//
//  PublicManager.swift
//  TwoSidesOfCoin
//
//  Created by akira ohmachi on 2021/03/19.
//

import SwiftUI
import GoogleMobileAds

class PublicManager: ObservableObject {
    
    @AppStorage("nameGold") var nameGold: String = ""
    @AppStorage("nameSilver") var nameSilver: String = ""
    @AppStorage("namePurple") var namePurple: String = ""
    @AppStorage("nameBlue") var nameBlue: String = ""
    @AppStorage("nameGreen") var nameGreen: String = ""
    @AppStorage("nameYellow") var nameYellow: String = ""
    @AppStorage("nameRed") var nameRed: String = ""
    @AppStorage("nameWhite") var nameWhite: String = ""
    @AppStorage("qtyGold") var qtyGold: String = ""
    @AppStorage("qtySilver") var qtySilver: String = ""
    @AppStorage("qtyPurple") var qtyPurple: String = ""
    @AppStorage("qtyBlue") var qtyBlue: String = ""
    @AppStorage("qtyGreen") var qtyGreen: String = ""
    @AppStorage("qtyYellow") var qtyYellow: String = ""
    @AppStorage("qtyRed") var qtyRed: String = ""
    @AppStorage("qtyWhite") var qtyWhite: String = ""
    @AppStorage("pin") var pin: String = ""
    @Published var isSetting: Bool = false
    
    @Published var tmpNameGold: String = ""
    @Published var tmpNameSilver: String = ""
    @Published var tmpNamePurple: String = ""
    @Published var tmpNameBlue: String = ""
    @Published var tmpNameGreen: String = ""
    @Published var tmpNameYellow: String = ""
    @Published var tmpNameRed: String = ""
    @Published var tmpNameWhite: String = ""
    @Published var tmpQtyGold: String = ""
    @Published var tmpQtySilver: String = ""
    @Published var tmpQtyPurple: String = ""
    @Published var tmpQtyBlue: String = ""
    @Published var tmpQtyGreen: String = ""
    @Published var tmpQtyYellow: String = ""
    @Published var tmpQtyRed: String = ""
    @Published var tmpQtyWhite: String = ""
    @Published var tmpPin: String = ""

    
    //--------------------------------------------------
    //adMob
    
    struct AdView: UIViewRepresentable {
        func makeUIView(context: Context) -> GADBannerView {
            let banner = GADBannerView(adSize: kGADAdSizeBanner)
            #if DEBUG
            banner.adUnitID = "ca-app-pub-3940256099942544/2934735716"
            #else
            banner.adUnitID = "ca-app-pub-0000000000000000/0000000000"
            #endif
            banner.rootViewController = UIApplication.shared.windows.first?.rootViewController
            banner.load(GADRequest())
            return banner
        }

        func updateUIView(_ uiView: GADBannerView, context: Context) {
        }
    }

    //--------------------------------------------------

}

SettingView.swift

//
//  SettingView.swift
//  WheelLotteryMachine
//
//  Created by akira ohmachi on 2021/04/02.
//

import SwiftUI

struct SettingView: View {
    @EnvironmentObject var pub: PublicManager
    
    init() {
        UITableView.appearance().sectionHeaderHeight = .zero
        UITableView.appearance().sectionFooterHeight = 10
    }
    var body: some View {
        VStack(spacing: 0) {
            HStack(spacing: 0) {
                Button(action: {
                    self.pub.isSetting = false
                }) {
                    HStack {
                        Image(systemName: "arrow.backward")
                        Text("cancel")
                    }
                }
                Spacer()
                Button(action: {
                    self.pub.nameGold = self.pub.tmpNameGold
                    self.pub.nameSilver = self.pub.tmpNameSilver
                    self.pub.namePurple = self.pub.tmpNamePurple
                    self.pub.nameBlue = self.pub.tmpNameBlue
                    self.pub.nameGreen = self.pub.tmpNameGreen
                    self.pub.nameYellow = self.pub.tmpNameYellow
                    self.pub.nameRed = self.pub.tmpNameRed
                    self.pub.nameWhite = self.pub.tmpNameWhite
                    self.pub.qtyGold = self.adjustStrNum(str: self.pub.tmpQtyGold)
                    self.pub.qtySilver = self.adjustStrNum(str: self.pub.tmpQtySilver)
                    self.pub.qtyPurple = self.adjustStrNum(str: self.pub.tmpQtyPurple)
                    self.pub.qtyBlue = self.adjustStrNum(str: self.pub.tmpQtyBlue)
                    self.pub.qtyGreen = self.adjustStrNum(str: self.pub.tmpQtyGreen)
                    self.pub.qtyYellow = self.adjustStrNum(str: self.pub.tmpQtyYellow)
                    self.pub.qtyRed = self.adjustStrNum(str: self.pub.tmpQtyRed)
                    self.pub.qtyWhite = self.adjustStrNum(str: self.pub.tmpQtyWhite)
                    self.pub.pin = self.pub.tmpPin
                    self.pub.isSetting = false
                }) {
                    HStack {
                        Text("apply")
                        Image(systemName: "checkmark.circle")
                    }
                }
            }
            .padding(20)
        }
        Form {
            Section {
                HStack {
                    Image("ball_gold")
                        .resizable()
                        .frame(width:20, height:20, alignment: .center)
                    Text("ballGold")
                    TextField("", text: self.$pub.tmpNameGold)
                                .textFieldStyle(RoundedBorderTextFieldStyle())
                }
                HStack {
                    Text("quantity")
                    TextField("", text: Binding(
                                get: {self.pub.tmpQtyGold},
                                set: {self.pub.tmpQtyGold = $0.filter{"0123456789".contains($0)}}))
                                .textFieldStyle(RoundedBorderTextFieldStyle())
                                .keyboardType(.numberPad)
                }
            }
            Section {
                HStack {
                    Image("ball_silver")
                        .resizable()
                        .frame(width:20, height:20, alignment: .center)
                    Text("ballSilver")
                    TextField("", text: self.$pub.tmpNameSilver)
                                .textFieldStyle(RoundedBorderTextFieldStyle())
                }
                HStack {
                    Text("quantity")
                    TextField("", text: Binding(
                                get: {self.pub.tmpQtySilver},
                                set: {self.pub.tmpQtySilver = $0.filter{"0123456789".contains($0)}}))
                                .textFieldStyle(RoundedBorderTextFieldStyle())
                                .keyboardType(.numberPad)
                }
            }
            Section {
                HStack {
                    Image("ball_purple")
                        .resizable()
                        .frame(width:20, height:20, alignment: .center)
                    Text("ballPurple")
                    TextField("", text: self.$pub.tmpNamePurple)
                                .textFieldStyle(RoundedBorderTextFieldStyle())
                }
                HStack {
                    Text("quantity")
                    TextField("", text: Binding(
                                get: {self.pub.tmpQtyPurple},
                                set: {self.pub.tmpQtyPurple = $0.filter{"0123456789".contains($0)}}))
                                .textFieldStyle(RoundedBorderTextFieldStyle())
                                .keyboardType(.numberPad)
                }
            }
            Section {
                HStack {
                    Image("ball_blue")
                        .resizable()
                        .frame(width:20, height:20, alignment: .center)
                    Text("ballBlue")
                    TextField("", text: self.$pub.tmpNameBlue)
                                .textFieldStyle(RoundedBorderTextFieldStyle())
                }
                HStack {
                    Text("quantity")
                    TextField("", text: Binding(
                                get: {self.pub.tmpQtyBlue},
                                set: {self.pub.tmpQtyBlue = $0.filter{"0123456789".contains($0)}}))
                                .textFieldStyle(RoundedBorderTextFieldStyle())
                                .keyboardType(.numberPad)
                }
            }
            Section {
                HStack {
                    Image("ball_green")
                        .resizable()
                        .frame(width:20, height:20, alignment: .center)
                    Text("ballGreen")
                    TextField("", text: self.$pub.tmpNameGreen)
                                .textFieldStyle(RoundedBorderTextFieldStyle())
                }
                HStack {
                    Text("quantity")
                    TextField("", text: Binding(
                                get: {self.pub.tmpQtyGreen},
                                set: {self.pub.tmpQtyGreen = $0.filter{"0123456789".contains($0)}}))
                                .textFieldStyle(RoundedBorderTextFieldStyle())
                                .keyboardType(.numberPad)
                }
            }
            Section {
                HStack {
                    Image("ball_yellow")
                        .resizable()
                        .frame(width:20, height:20, alignment: .center)
                    Text("ballYellow")
                    TextField("", text: self.$pub.tmpNameYellow)
                                .textFieldStyle(RoundedBorderTextFieldStyle())
                }
                HStack {
                    Text("quantity")
                    TextField("", text: Binding(
                                get: {self.pub.tmpQtyYellow},
                                set: {self.pub.tmpQtyYellow = $0.filter{"0123456789".contains($0)}}))
                                .textFieldStyle(RoundedBorderTextFieldStyle())
                                .keyboardType(.numberPad)
                }
            }
            Section {
                HStack {
                    Image("ball_red")
                        .resizable()
                        .frame(width:20, height:20, alignment: .center)
                    Text("ballRed")
                    TextField("", text: self.$pub.tmpNameRed)
                                .textFieldStyle(RoundedBorderTextFieldStyle())
                }
                HStack {
                    Text("quantity")
                    TextField("", text: Binding(
                                get: {self.pub.tmpQtyRed},
                                set: {self.pub.tmpQtyRed = $0.filter{"0123456789".contains($0)}}))
                                .textFieldStyle(RoundedBorderTextFieldStyle())
                                .keyboardType(.numberPad)
                }
            }
            Section {
                HStack {
                    Image("ball_white")
                        .resizable()
                        .frame(width:20, height:20, alignment: .center)
                    Text("ballWhite")
                    TextField("", text: self.$pub.tmpNameWhite)
                                .textFieldStyle(RoundedBorderTextFieldStyle())
                }
                HStack {
                    Text("quantity")
                    TextField("", text: Binding(
                                get: {self.pub.tmpQtyWhite},
                                set: {self.pub.tmpQtyWhite = $0.filter{"0123456789".contains($0)}}))
                                .textFieldStyle(RoundedBorderTextFieldStyle())
                                .keyboardType(.numberPad)
                }
            }
            Section {
                HStack {
                    Text("pin")
                    TextField("", text: Binding(
                                get: {self.pub.tmpPin},
                                set: {self.pub.tmpPin = $0.filter{"0123456789".contains($0)}}))
                                .textFieldStyle(RoundedBorderTextFieldStyle())
                                .keyboardType(.numberPad)
                }
                Text("pin01")
                    .font(.footnote)
                Text("pin02")
                    .font(.footnote)
            }
            Section {
                Text("usage")
                    .font(.footnote)
                Text("usage1")
                    .font(.footnote)
            }
        }
        //.navigationBarTitle("Setting",displayMode: .automatic)
        //.navigationViewStyle(StackNavigationViewStyle())
        .navigationBarHidden(true)
        .onTapGesture {     //背景タップでキーボードを閉じる
            UIApplication.shared.closeKeyboard()
        }

    }
    
    func adjustStrNum(str: String) -> String {
        let num: Int = NumberFormatter().number(from: "0" + str) as! Int
        if num == 0 {
            return ""
        }
        return String(num)
    }
}

extension UIApplication {
    func closeKeyboard() {  //キーボードを閉じる
        sendAction(#selector(UIResponder.resignFirstResponder), to: nil, from: nil, for: nil)
    }
}

struct SettingView_Previews: PreviewProvider {
    static var previews: some View {
        Group {
            SettingView().environmentObject(PublicManager())
        }
    }
}

TextFieldAlertView.swift

//
//  TextFieldAlertView.swift
//  WheelLotteryMachine
//
//  Created by akira ohmachi on 2021/03/21.
//
// https://www.yururiwork.net/【swiftui】textfield付きalertを表示する/
//

import SwiftUI

struct TextFieldAlertView: UIViewControllerRepresentable {

    @Binding var text: String
    @Binding var isShowingAlert: Bool

    let placeholder: String
    let isSecureTextEntry: Bool
    let title: String
    let message: String

    let leftButtonTitle: String?
    let rightButtonTitle: String?

    var leftButtonAction: (() -> Void)?
    var rightButtonAction: (() -> Void)?

    func makeUIViewController(context: UIViewControllerRepresentableContext<TextFieldAlertView>) -> some UIViewController {
        return UIViewController()
    }

    func updateUIViewController(_ uiViewController: UIViewControllerType, context: UIViewControllerRepresentableContext<TextFieldAlertView>) {

        guard context.coordinator.alert == nil else {
            return
        }

        if !isShowingAlert {
            return
        }

        let alert = UIAlertController(title: title, message: message, preferredStyle: .alert)
        context.coordinator.alert = alert

        alert.addTextField { textField in
            textField.placeholder = placeholder
            textField.text = text
            textField.delegate = context.coordinator
            textField.isSecureTextEntry = isSecureTextEntry
        }

        if leftButtonTitle != nil {
            alert.addAction(UIAlertAction(title: leftButtonTitle, style: .default) { _ in
                alert.dismiss(animated: true) {
                    isShowingAlert = false
                    leftButtonAction?()
                }
            })
        }

        if rightButtonTitle != nil {
            alert.addAction(UIAlertAction(title: rightButtonTitle, style: .default) { _ in
                if let textField = alert.textFields?.first, let text = textField.text {
                    self.text = text
                }
                alert.dismiss(animated: true) {
                    isShowingAlert = false
                    rightButtonAction?()
                }
            })
        }

        DispatchQueue.main.async {
            uiViewController.present(alert, animated: true, completion: {
                isShowingAlert = false
                context.coordinator.alert = nil
            })
        }
    }

    func makeCoordinator() -> TextFieldAlertView.Coordinator {
        Coordinator(self)
    }

    class Coordinator: NSObject, UITextFieldDelegate {

        var alert: UIAlertController?
        var view: TextFieldAlertView

        init(_ view: TextFieldAlertView) {
            self.view = view
        }

        func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
            if let text = textField.text as NSString? {
                self.view.text = text.replacingCharacters(in: range, with: string)
            } else {
                self.view.text = ""
            }
            return true
        }
    }
}

WheelLotteryMachineApp.swift

//
//  WheelLotteryMachineApp.swift
//  WheelLotteryMachine
//
//  Created by akira ohmachi on 2021/04/02.
//

import SwiftUI
import UIKit
import GoogleMobileAds

// AppDelegateクラスを定義する
class AppDelegate: NSObject, UIApplicationDelegate {
    func application(_ application: UIApplication,didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {

        // Mobile Ads SDKを初期化する
        GADMobileAds.sharedInstance().start(completionHandler: nil)
        
        return true
    }
}


@main
struct WheelLotteryMachineApp: App {
    // SwiftUI AppライフサイクルにAppDelegateクラスを注入する
    @UIApplicationDelegateAdaptor(AppDelegate.self) var appDelegate

    var body: some Scene {
        WindowGroup {
            ContentView().environmentObject(PublicManager())
        }
    }
}