Refactor CreateCodeView to enhance barcode input validation and user experience; implement dynamic input handling, visual feedback, and improved layout for barcode type selection and content entry.

MyQrCode/Models/BarcodeValidator.swift

@@ -0,0 +1,275 @@
+import Foundation
+
+// MARK: - 条形码验证器
+class BarcodeValidator {
+    
+    // MARK: - 验证结果
+    struct ValidationResult {
+        let isValid: Bool
+        let formattedContent: String
+        let errorMessage: String?
+        let expectedLength: Int?
+        let allowedCharacters: String?
+    }
+    
+    // MARK: - 条形码格式验证规则
+    static func validateBarcode(_ content: String, type: BarcodeType) -> ValidationResult {
+        let cleanedContent = content.replacingOccurrences(of: " ", with: "")
+        
+        switch type {
+        case .ean13:
+            return validateEAN13(cleanedContent)
+        case .ean8:
+            return validateEAN8(cleanedContent)
+        case .upce:
+            return validateUPCE(cleanedContent)
+        case .code39:
+            return validateCode39(cleanedContent)
+        case .code128:
+            return validateCode128(cleanedContent)
+        case .itf14:
+            return validateITF14(cleanedContent)
+        case .pdf417:
+            return validatePDF417(cleanedContent)
+        }
+    }
+    
+    // MARK: - EAN-13 验证
+    private static func validateEAN13(_ content: String) -> ValidationResult {
+        // EAN-13: 13位数字
+        let pattern = "^[0-9]{13}$"
+        let isValid = content.range(of: pattern, options: .regularExpression) != nil
+        
+        if isValid {
+            return ValidationResult(
+                isValid: true,
+                formattedContent: formatEAN13(content),
+                errorMessage: nil,
+                expectedLength: 13,
+                allowedCharacters: "数字 (0-9)"
+            )
+        } else {
+            return ValidationResult(
+                isValid: false,
+                formattedContent: content,
+                errorMessage: "EAN-13必须是13位数字",
+                expectedLength: 13,
+                allowedCharacters: "数字 (0-9)"
+            )
+        }
+    }
+    
+    // MARK: - EAN-8 验证
+    private static func validateEAN8(_ content: String) -> ValidationResult {
+        // EAN-8: 8位数字
+        let pattern = "^[0-9]{8}$"
+        let isValid = content.range(of: pattern, options: .regularExpression) != nil
+        
+        if isValid {
+            return ValidationResult(
+                isValid: true,
+                formattedContent: formatEAN8(content),
+                errorMessage: nil,
+                expectedLength: 8,
+                allowedCharacters: "数字 (0-9)"
+            )
+        } else {
+            return ValidationResult(
+                isValid: false,
+                formattedContent: content,
+                errorMessage: "EAN-8必须是8位数字",
+                expectedLength: 8,
+                allowedCharacters: "数字 (0-9)"
+            )
+        }
+    }
+    
+    // MARK: - UPC-E 验证
+    private static func validateUPCE(_ content: String) -> ValidationResult {
+        // UPC-E: 8位数字
+        let pattern = "^[0-9]{8}$"
+        let isValid = content.range(of: pattern, options: .regularExpression) != nil
+        
+        if isValid {
+            return ValidationResult(
+                isValid: true,
+                formattedContent: formatUPCE(content),
+                errorMessage: nil,
+                expectedLength: 8,
+                allowedCharacters: "数字 (0-9)"
+            )
+        } else {
+            return ValidationResult(
+                isValid: false,
+                formattedContent: content,
+                errorMessage: "UPC-E必须是8位数字",
+                expectedLength: 8,
+                allowedCharacters: "数字 (0-9)"
+            )
+        }
+    }
+    
+    // MARK: - Code 39 验证
+    private static func validateCode39(_ content: String) -> ValidationResult {
+        // Code 39: 字母、数字、空格和特殊字符
+        let pattern = "^[A-Z0-9\\s\\-\\+\\.\\/\\$\\(\\)\\%\\s]+$"
+        let isValid = content.range(of: pattern, options: .regularExpression) != nil
+        
+        if isValid {
+            return ValidationResult(
+                isValid: true,
+                formattedContent: formatCode39(content),
+                errorMessage: nil,
+                expectedLength: nil,
+                allowedCharacters: "字母 (A-Z)、数字 (0-9)、空格、特殊字符 (- + . / $ ( ) %)"
+            )
+        } else {
+            return ValidationResult(
+                isValid: false,
+                formattedContent: content,
+                errorMessage: "Code 39只能包含字母、数字、空格和特殊字符",
+                expectedLength: nil,
+                allowedCharacters: "字母 (A-Z)、数字 (0-9)、空格、特殊字符 (- + . / $ ( ) %)"
+            )
+        }
+    }
+    
+
+    
+    // MARK: - Code 128 验证
+    private static func validateCode128(_ content: String) -> ValidationResult {
+        // Code 128: 支持所有ASCII字符
+        let pattern = "^[\\x00-\\x7F]+$"
+        let isValid = content.range(of: pattern, options: .regularExpression) != nil
+        
+        if isValid {
+            return ValidationResult(
+                isValid: true,
+                formattedContent: formatCode128(content),
+                errorMessage: nil,
+                expectedLength: nil,
+                allowedCharacters: "所有ASCII字符 (0-127)"
+            )
+        } else {
+            return ValidationResult(
+                isValid: false,
+                formattedContent: content,
+                errorMessage: "Code 128只能包含ASCII字符",
+                expectedLength: nil,
+                allowedCharacters: "所有ASCII字符 (0-127)"
+            )
+        }
+    }
+    
+    // MARK: - ITF-14 验证
+    private static func validateITF14(_ content: String) -> ValidationResult {
+        // ITF-14: 14位数字
+        let pattern = "^[0-9]{14}$"
+        let isValid = content.range(of: pattern, options: .regularExpression) != nil
+        
+        if isValid {
+            return ValidationResult(
+                isValid: true,
+                formattedContent: formatITF14(content),
+                errorMessage: nil,
+                expectedLength: 14,
+                allowedCharacters: "数字 (0-9)"
+            )
+        } else {
+            return ValidationResult(
+                isValid: false,
+                formattedContent: content,
+                errorMessage: "ITF-14必须是14位数字",
+                expectedLength: 14,
+                allowedCharacters: "数字 (0-9)"
+            )
+        }
+    }
+    
+    // MARK: - PDF417 验证
+    private static func validatePDF417(_ content: String) -> ValidationResult {
+        // PDF417: 支持所有ASCII字符
+        let pattern = "^[\\x00-\\x7F]+$"
+        let isValid = content.range(of: pattern, options: .regularExpression) != nil
+        
+        if isValid {
+            return ValidationResult(
+                isValid: true,
+                formattedContent: formatPDF417(content),
+                errorMessage: nil,
+                expectedLength: nil,
+                allowedCharacters: "所有ASCII字符 (0-127)"
+            )
+        } else {
+            return ValidationResult(
+                isValid: false,
+                formattedContent: content,
+                errorMessage: "PDF417只能包含ASCII字符",
+                expectedLength: nil,
+                allowedCharacters: "所有ASCII字符 (0-127)"
+            )
+        }
+    }
+    
+    // MARK: - 格式化方法
+    private static func formatEAN13(_ content: String) -> String {
+        // EAN-13: 添加空格分隔符
+        let formatted = content.enumerated().map { index, char in
+            if index == 0 || index == 6 || index == 12 {
+                return " \(char)"
+            }
+            return String(char)
+        }.joined()
+        return formatted.trimmingCharacters(in: .whitespaces)
+    }
+    
+    private static func formatEAN8(_ content: String) -> String {
+        // EAN-8: 添加空格分隔符
+        let formatted = content.enumerated().map { index, char in
+            if index == 0 || index == 4 {
+                return " \(char)"
+            }
+            return String(char)
+        }.joined()
+        return formatted.trimmingCharacters(in: .whitespaces)
+    }
+    
+    private static func formatUPCE(_ content: String) -> String {
+        // UPC-E: 添加空格分隔符
+        let formatted = content.enumerated().map { index, char in
+            if index == 0 || index == 4 {
+                return " \(char)"
+            }
+            return String(char)
+        }.joined()
+        return formatted.trimmingCharacters(in: .whitespaces)
+    }
+    
+    private static func formatCode39(_ content: String) -> String {
+        // Code 39: 保持原样，但去除多余空格
+        return content.trimmingCharacters(in: .whitespaces)
+    }
+    
+
+    
+    private static func formatCode128(_ content: String) -> String {
+        // Code 128: 保持原样
+        return content.trimmingCharacters(in: .whitespaces)
+    }
+    
+    private static func formatITF14(_ content: String) -> String {
+        // ITF-14: 添加空格分隔符
+        let formatted = content.enumerated().map { index, char in
+            if index == 0 || index == 5 || index == 10 {
+                return " \(char)"
+            }
+            return String(char)
+        }.joined()
+        return formatted.trimmingCharacters(in: .whitespaces)
+    }
+    
+    private static func formatPDF417(_ content: String) -> String {
+        // PDF417: 保持原样
+        return content.trimmingCharacters(in: .whitespaces)
+    }
+} 

MyQrCode/Models/HistoryEnums.swift

@@ -7,11 +7,6 @@ public enum BarcodeType: String, CaseIterable {
     case ean8 = "EAN-8"
     case upce = "UPC-E"
     case code39 = "Code 39"
-    case code39Checksum = "Code 39 (Checksum)"
-    case code39FullASCII = "Code 39 (Full ASCII)"
-    case code39FullASCIIChecksum = "Code 39 (Full ASCII + Checksum)"
-    case code93 = "Code 93"
-    case code93i = "Code 93i"
     case code128 = "Code 128"
     case itf14 = "ITF-14"
     case pdf417 = "PDF417"
@@ -22,14 +17,10 @@ public enum BarcodeType: String, CaseIterable {
     
     var icon: String {
         switch self {
-        case .ean13, .ean8, .upce:
+        case .ean13, .ean8, .upce, .itf14:
             return "barcode"
-        case .code39, .code39Checksum, .code39FullASCII, .code39FullASCIIChecksum:
+        case .code39, .code128:
             return "barcode.viewfinder"
-        case .code93, .code93i, .code128:
-            return "barcode.viewfinder"
-        case .itf14:
-            return "barcode"
         case .pdf417:
             return "qrcode.viewfinder"
         }

MyQrCode/Views/BarcodeCharacterHintView.swift

@@ -0,0 +1,95 @@
+import SwiftUI
+
+// MARK: - 条形码字符提示组件
+struct BarcodeCharacterHintView: View {
+    let barcodeType: BarcodeType
+    
+    var body: some View {
+        VStack(alignment: .leading, spacing: 8) {
+            Text("字符类型:")
+                .font(.caption)
+                .foregroundColor(.secondary)
+            
+            LazyVGrid(columns: [
+                GridItem(.adaptive(minimum: 80), spacing: 8)
+            ], spacing: 6) {
+                ForEach(getCharacterTypes(), id: \.self) { charType in
+                    HStack(spacing: 4) {
+                        Image(systemName: charType.icon)
+                            .font(.caption2)
+                            .foregroundColor(charType.color)
+                        
+                        Text(charType.name)
+                            .font(.caption2)
+                            .foregroundColor(charType.color)
+                    }
+                    .padding(.horizontal, 8)
+                    .padding(.vertical, 4)
+                    .background(
+                        RoundedRectangle(cornerRadius: 6)
+                            .fill(charType.color.opacity(0.1))
+                    )
+                }
+            }
+        }
+    }
+    
+    private func getCharacterTypes() -> [CharacterType] {
+        switch barcodeType {
+        case .ean13, .ean8, .upce, .itf14:
+            return [
+                CharacterType(name: "数字", icon: "number", color: .blue)
+            ]
+            
+        case .code39:
+            return [
+                CharacterType(name: "字母", icon: "character", color: .green),
+                CharacterType(name: "数字", icon: "number", color: .blue),
+                CharacterType(name: "特殊字符", icon: "textformat", color: .orange)
+            ]
+            
+        case .code128:
+            return [
+                CharacterType(name: "字母", icon: "character", color: .green),
+                CharacterType(name: "数字", icon: "number", color: .blue),
+                CharacterType(name: "符号", icon: "textformat", color: .purple),
+                CharacterType(name: "控制字符", icon: "command", color: .red)
+            ]
+            
+        case .pdf417:
+            return [
+                CharacterType(name: "字母", icon: "character", color: .green),
+                CharacterType(name: "数字", icon: "number", color: .blue),
+                CharacterType(name: "符号", icon: "textformat", color: .purple),
+                CharacterType(name: "所有ASCII", icon: "globe", color: .indigo)
+            ]
+        }
+    }
+}
+
+// MARK: - 字符类型结构
+struct CharacterType: Hashable {
+    let name: String
+    let icon: String
+    let color: Color
+    
+    // 实现 Hashable 协议
+    func hash(into hasher: inout Hasher) {
+        hasher.combine(name)
+        hasher.combine(icon)
+    }
+    
+    static func == (lhs: CharacterType, rhs: CharacterType) -> Bool {
+        return lhs.name == rhs.name && lhs.icon == rhs.icon
+    }
+}
+
+#Preview {
+    VStack(spacing: 20) {
+        BarcodeCharacterHintView(barcodeType: .ean13)
+        BarcodeCharacterHintView(barcodeType: .code39)
+        BarcodeCharacterHintView(barcodeType: .code128)
+        BarcodeCharacterHintView(barcodeType: .pdf417)
+    }
+    .padding()
+} 

MyQrCode/Views/BarcodePreviewView.swift

@@ -0,0 +1,94 @@
+import SwiftUI
+import CoreImage
+import CoreImage.CIFilterBuiltins
+
+// MARK: - 条形码预览组件
+struct BarcodePreviewView: View {
+    let content: String
+    let barcodeType: BarcodeType
+    
+    var body: some View {
+        Group {
+            if let barcodeImage = generateBarcodeImage() {
+                Image(uiImage: barcodeImage)
+                    .resizable()
+                    .aspectRatio(contentMode: .fit)
+                    .frame(maxWidth: .infinity)
+                    .background(Color.white)
+                    .cornerRadius(8)
+                    .shadow(color: .black.opacity(0.1), radius: 2, x: 0, y: 1)
+            } else {
+                // 生成失败时的占位符
+                VStack(spacing: 8) {
+                    Image(systemName: "barcode.viewfinder")
+                        .font(.system(size: 32))
+                        .foregroundColor(.gray)
+                    
+                    Text("无法生成条形码")
+                        .font(.caption)
+                        .foregroundColor(.gray)
+                    
+                    Text("请检查输入内容格式")
+                        .font(.caption2)
+                        .foregroundColor(.gray)
+                }
+                .frame(maxWidth: .infinity)
+                .frame(height: 120)
+                .background(Color(.systemGray5))
+                .cornerRadius(8)
+            }
+        }
+    }
+    
+    // MARK: - 生成条形码图片
+    private func generateBarcodeImage() -> UIImage? {
+        guard !content.isEmpty else { return nil }
+        
+        let context = CIContext()
+        let filter: CIFilter?
+        
+        // 根据条形码类型选择相应的滤镜
+        switch barcodeType {
+        case .ean13, .ean8, .upce, .itf14:
+            filter = CIFilter.code128BarcodeGenerator()
+            filter?.setValue(content.data(using: .utf8), forKey: "inputMessage")
+            
+        case .code39:
+            // Code 39 使用 Code 128 滤镜，因为 Core Image 不直接支持 Code 39
+            filter = CIFilter.code128BarcodeGenerator()
+            filter?.setValue(content.data(using: .utf8), forKey: "inputMessage")
+            
+        case .code128:
+            filter = CIFilter.code128BarcodeGenerator()
+            filter?.setValue(content.data(using: .utf8), forKey: "inputMessage")
+            
+        case .pdf417:
+            filter = CIFilter.pdf417BarcodeGenerator()
+            filter?.setValue(content.data(using: .utf8), forKey: "inputMessage")
+        }
+        
+        guard let filter = filter,
+              let outputImage = filter.outputImage else { return nil }
+        
+        // 设置条形码的尺寸和缩放
+        let scale = CGAffineTransform(scaleX: 3, y: 3)
+        let scaledImage = outputImage.transformed(by: scale)
+        
+        // 转换为UIImage
+        guard let cgImage = context.createCGImage(scaledImage, from: scaledImage.extent) else {
+            return nil
+        }
+        
+        return UIImage(cgImage: cgImage)
+    }
+}
+
+#Preview {
+    VStack(spacing: 20) {
+        BarcodePreviewView(content: "1234567890123", barcodeType: .ean13)
+        BarcodePreviewView(content: "12345678", barcodeType: .ean8)
+        BarcodePreviewView(content: "CODE39", barcodeType: .code39)
+        BarcodePreviewView(content: "123456789012345678901234567890", barcodeType: .pdf417)
+    }
+    .padding()
+} 

MyQrCode/Views/BarcodeValidationInfoView.swift

@@ -0,0 +1,124 @@
+import SwiftUI
+
+// MARK: - 条形码验证信息显示组件
+struct BarcodeValidationInfoView: View {
+    let validationResult: BarcodeValidator.ValidationResult?
+    let barcodeType: BarcodeType
+    
+    var body: some View {
+        VStack(alignment: .leading, spacing: 8) {
+            if let result = validationResult {
+                // 验证状态指示器
+                HStack(spacing: 8) {
+                    Image(systemName: result.isValid ? "checkmark.circle.fill" : "xmark.circle.fill")
+                        .foregroundColor(result.isValid ? .green : .red)
+                    
+                    Text(result.isValid ? "格式正确" : "格式错误")
+                        .font(.caption)
+                        .foregroundColor(result.isValid ? .green : .red)
+                        .fontWeight(.medium)
+                    
+                    Spacer()
+                }
+                
+                // 错误信息
+                if let errorMessage = result.errorMessage {
+                    Text(errorMessage)
+                        .font(.caption)
+                        .foregroundColor(.red)
+                        .padding(.leading, 24)
+                }
+                
+                // 格式要求信息
+                VStack(alignment: .leading, spacing: 4) {
+                    if let expectedLength = result.expectedLength {
+                        HStack {
+                            Image(systemName: "number")
+                                .foregroundColor(.blue)
+                                .font(.caption)
+                            Text("长度要求: \(expectedLength) 位")
+                                .font(.caption)
+                                .foregroundColor(.blue)
+                        }
+                    }
+                    
+                    if let allowedCharacters = result.allowedCharacters {
+                        HStack {
+                            Image(systemName: "character")
+                                .foregroundColor(.blue)
+                                .font(.caption)
+                            Text("允许字符: \(allowedCharacters)")
+                                .font(.caption)
+                                .foregroundColor(.blue)
+                        }
+                    }
+                }
+                .padding(.leading, 24)
+                
+                // 格式化后的内容
+                if result.isValid && result.formattedContent != "" {
+                    HStack {
+                        Image(systemName: "textformat")
+                            .foregroundColor(.green)
+                            .font(.caption)
+                        Text("格式化: \(result.formattedContent)")
+                            .font(.caption)
+                            .foregroundColor(.green)
+                            .fontWeight(.medium)
+                    }
+                    .padding(.leading, 24)
+                }
+            } else {
+                // 默认提示信息
+                HStack {
+                    Image(systemName: "info.circle")
+                        .foregroundColor(.blue)
+                        .font(.caption)
+                    Text("请输入符合 \(barcodeType.displayName) 格式的内容")
+                        .font(.caption)
+                        .foregroundColor(.blue)
+                }
+            }
+        }
+        .padding(12)
+        .background(
+            RoundedRectangle(cornerRadius: 8)
+                .fill(Color(.systemGray6))
+        )
+    }
+}
+
+#Preview {
+    VStack(spacing: 20) {
+        // 有效格式示例
+        BarcodeValidationInfoView(
+            validationResult: BarcodeValidator.ValidationResult(
+                isValid: true,
+                formattedContent: "123 4567 8901 2",
+                errorMessage: nil,
+                expectedLength: 13,
+                allowedCharacters: "数字 (0-9)"
+            ),
+            barcodeType: .ean13
+        )
+        
+        // 无效格式示例
+        BarcodeValidationInfoView(
+            validationResult: BarcodeValidator.ValidationResult(
+                isValid: false,
+                formattedContent: "12345",
+                errorMessage: "EAN-13必须是13位数字",
+                expectedLength: 13,
+                allowedCharacters: "数字 (0-9)"
+            ),
+            barcodeType: .ean13
+        )
+        
+        // 默认状态示例
+        BarcodeValidationInfoView(
+            validationResult: nil,
+            barcodeType: .code39
+        )
+    }
+    .padding()
+} 

MyQrCode/Views/CreateCodeView.swift

@@ -12,21 +12,53 @@ struct CreateCodeView: View {
     @State private var showingAlert = false
     @State private var alertMessage = ""
     
+    // 条形码验证相关状态
+    @State private var validationResult: BarcodeValidator.ValidationResult?
+    @State private var showValidationInfo = false
+    
+    // 输入焦点，确保进入页面自动弹出键盘
+    @FocusState private var isContentFieldFocused: Bool
+    
     var body: some View {
-        NavigationView {
+        Form {
-            Form {
                 // 数据类型选择
                 Section("数据类型") {
-                    Picker("数据类型", selection: $selectedDataType) {
+                    HStack(spacing: 0) {
                         ForEach(DataType.allCases, id: \.self) { type in
-                            HStack {
+                            Button(action: {
-                                Image(systemName: type.icon)
+                                selectedDataType = type
-                                Text(type.displayName)
+                                isContentFieldFocused = true
+                                // 添加触觉反馈
+                                let impactFeedback = UIImpactFeedbackGenerator(style: .light)
+                                impactFeedback.impactOccurred()
+                            }) {
+                                HStack(spacing: 6) {
+                                    Image(systemName: type.icon)
+                                        .font(.system(size: 16, weight: .medium))
+                                        .foregroundColor(selectedDataType == type ? .white : .primary)
+                                    
+                                    Text(type.displayName)
+                                        .font(.system(size: 15, weight: .medium))
+                                        .foregroundColor(selectedDataType == type ? .white : .primary)
+                                }
+                                .frame(maxWidth: .infinity)
+                                .padding(.vertical, 12)
+                                .background(
+                                    RoundedRectangle(cornerRadius: 8)
+                                        .fill(selectedDataType == type ? Color.blue : Color(.systemGray6))
+                                )
                             }
-                            .tag(type)
+                            .buttonStyle(PlainButtonStyle())
                         }
                     }
-                    .pickerStyle(SegmentedPickerStyle())
+                    .background(
+                        RoundedRectangle(cornerRadius: 8)
+                            .fill(Color(.systemGray6))
+                    )
+                    .overlay(
+                        RoundedRectangle(cornerRadius: 8)
+                            .stroke(Color(.systemGray4), lineWidth: 0.5)
+                    )
                 }
                 
                 // 具体类型选择
@@ -60,14 +92,101 @@ struct CreateCodeView: View {
                 
                 // 内容输入
                 Section("内容") {
-                    TextField("请输入内容", text: $content)
+                    VStack(alignment: .leading, spacing: 12) {
-                        .frame(minHeight: 80)
+                        // 输入框和计数布局
+                        VStack(alignment: .trailing, spacing: 4) {
+                            // 条形码格式提示
+                            if selectedDataType == .barcode {
+                                HStack {
+                                    Image(systemName: "info.circle")
+                                        .font(.caption)
+                                        .foregroundColor(.blue)
+                                    
+                                    Text(getBarcodeFormatHint())
+                                        .font(.caption)
+                                        .foregroundColor(.secondary)
+                                        .lineLimit(2)
+                                    
+                                    Spacer()
+                                }
+                                .padding(.horizontal, 4)
+                                .padding(.vertical, 6)
+                                .background(
+                                    RoundedRectangle(cornerRadius: 6)
+                                        .fill(Color.blue.opacity(0.1))
+                                )
+                            }
+                            
+                            TextField(getPlaceholderText(), text: $content)
+                                .textFieldStyle(RoundedBorderTextFieldStyle())
+                                .keyboardType(getKeyboardType())
+                                .textInputAutocapitalization(getAutocapitalization())
+                                .disableAutocorrection(true)
+                                .focused($isContentFieldFocused)
+                                .toolbar {
+                                    ToolbarItemGroup(placement: .keyboard) {
+                                        Spacer()
+                                        Button("完成") {
+                                            isContentFieldFocused = false
+                                        }
+                                        .foregroundColor(.blue)
+                                        .font(.system(size: 16, weight: .medium))
+                                    }
+                                }
+                                .foregroundColor(.black)
+                                .onChange(of: content) { newValue in
+                                    // 针对有固定长度与数字要求的类型，进行输入规范化（仅保留数字并按最大长度截断）
+                                    if selectedDataType == .barcode, let maxLen = getMaxLength(), requiresDigitsOnly() {
+                                        let digits = newValue.filter { $0.isNumber }
+                                        let truncated = String(digits.prefix(maxLen))
+                                        if truncated != newValue { 
+                                            content = truncated
+                                            // 播放输入提示音
+                                            playInputSound()
+                                        }
+                                    } else if selectedDataType == .barcode {
+                                        // 播放输入提示音
+                                        playInputSound()
+                                    }
+                                    validateBarcodeContent(content)
+                                }
+                            
+                            // 计数显示在输入框下方，右对齐
+                            if let maxLen = getMaxLength(), selectedDataType == .barcode {
+                                Text("\(normalizedInputCount())/\(maxLen)")
+                                    .font(.caption2)
+                                    .foregroundColor(.blue)
+                                    .fontWeight(.medium)
+                            }
+                        }
+                        
+                        // 输入统计与验证状态
+                        HStack {
+                            if let result = validationResult, result.isValid {
+                                Text("✓ 格式正确")
+                                    .font(.caption2)
+                                    .foregroundColor(.green)
+                            } else if !content.isEmpty {
+                                Text("⚠ 格式检查中...")
+                                    .font(.caption2)
+                                    .foregroundColor(.orange)
+                            }
+                        }
+                        
+                        // 条形码验证信息（仅在格式不正确时显示）
+                        if selectedDataType == .barcode && !content.isEmpty && (validationResult == nil || !validationResult!.isValid) {
+                            BarcodeValidationInfoView(
+                                validationResult: validationResult,
+                                barcodeType: selectedBarcodeType
+                            )
+                        }
+                    }
                 }
                 
                 // 预览
                 if !content.isEmpty {
                     Section("预览") {
-                        VStack(alignment: .leading, spacing: 8) {
+                        VStack(alignment: .leading, spacing: 12) {
                             HStack {
                                 Image(systemName: selectedDataType.icon)
                                 Text(selectedDataType.displayName)
@@ -91,70 +210,211 @@ struct CreateCodeView: View {
                                 }
                             }
                             
-                            Text(content)
+                            if selectedDataType == .barcode && !content.isEmpty && isInputComplete() {
-                                .font(.body)
+                                // 条形码图片预览（仅在输入完成时显示）
-                                .foregroundColor(.secondary)
+                                BarcodePreviewView(
+                                    content: content,
+                                    barcodeType: selectedBarcodeType
+                                )
+                                .frame(height: 120)
+                                .frame(maxWidth: .infinity)
+                            } else {
+                                // 二维码或文本预览
+                                Text(content)
+                                    .font(.body)
+                                    .foregroundColor(.secondary)
+                                    .padding()
+                                    .frame(maxWidth: .infinity, alignment: .leading)
+                            }
                         }
                         .padding()
                         .background(Color(.systemGray6))
                         .cornerRadius(8)
                     }
                 }
-            }
+        }
-            .navigationTitle("创建\(selectedDataType.displayName)")
+        .navigationTitle("创建\(selectedDataType.displayName)")
-            .navigationBarTitleDisplayMode(.inline)
+        .navigationBarTitleDisplayMode(.inline)
-            .toolbar {
+        .toolbar {
-                ToolbarItem(placement: .navigationBarLeading) {
+            ToolbarItem(placement: .navigationBarTrailing) {
-                    Button("取消") {
+                Button("创建") { createCode() }
-                        dismiss()
-                    }
-                }
-                
-                ToolbarItem(placement: .navigationBarTrailing) {
-                    Button("创建") {
-                        createCode()
-                    }
                     .disabled(content.isEmpty)
-                }
             }
-            .alert("提示", isPresented: $showingAlert) {
+        }
-                Button("确定") { }
+        .alert("提示", isPresented: $showingAlert) {
-            } message: {
+            Button("确定") { }
-                Text(alertMessage)
+        } message: { Text(alertMessage) }
+        .onAppear {
+            // 稍延迟以确保进入页面时自动聚焦
+            DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) {
+                isContentFieldFocused = true
             }
         }
+        .onChange(of: selectedDataType) { _ in
+            isContentFieldFocused = true
+        }
+        .onChange(of: selectedBarcodeType) { _ in
+            isContentFieldFocused = true
+        }
+        .onTapGesture {
+            // 点击外部关闭键盘
+            isContentFieldFocused = false
+        }
+    }
+    
+    // MARK: - 条形码验证方法
+    private func validateBarcodeContent(_ newContent: String) {
+        guard selectedDataType == .barcode else { return }
+        validationResult = BarcodeValidator.validateBarcode(newContent, type: selectedBarcodeType)
+        // 如果验证通过，自动格式化内容
+        if let result = validationResult, result.isValid {
+            content = result.formattedContent
+        }
+    }
+    
+    // MARK: - 键盘配置方法
+    private func getKeyboardType() -> UIKeyboardType {
+        guard selectedDataType == .barcode else { return .default }
+        switch selectedBarcodeType {
+        case .ean13, .ean8, .upce, .itf14:
+            return .numberPad
+        case .code39, .code128, .pdf417:
+            return .asciiCapable
+        }
+    }
+    
+    private func getAutocapitalization() -> TextInputAutocapitalization {
+        guard selectedDataType == .barcode else { return .sentences }
+        switch selectedBarcodeType {
+        case .ean13, .ean8, .upce, .itf14:
+            return .never
+        case .code39, .code128, .pdf417:
+            return .characters
+        }
+    }
+    
+    // MARK: - 计数/规则
+    private func getMaxLength() -> Int? {
+        guard selectedDataType == .barcode else { return nil }
+        switch selectedBarcodeType {
+        case .ean13: return 13
+        case .ean8: return 8
+        case .upce: return 8
+        case .itf14: return 14
+        default: return nil
+        }
+    }
+    
+    private func requiresDigitsOnly() -> Bool {
+        guard selectedDataType == .barcode else { return false }
+        switch selectedBarcodeType {
+        case .ean13, .ean8, .upce, .itf14:
+            return true
+        default:
+            return false
+        }
+    }
+    
+    private func normalizedInputCount() -> Int {
+        if requiresDigitsOnly() {
+            return content.filter { $0.isNumber }.count
+        }
+        return content.count
+    }
+    
+    // MARK: - 条形码格式提示
+    private func getBarcodeFormatHint() -> String {
+        switch selectedBarcodeType {
+        case .ean13:
+            return "请输入13位数字，如：1234567890123"
+        case .ean8:
+            return "请输入8位数字，如：12345678"
+        case .upce:
+            return "请输入8位数字，如：12345678"
+        case .code39:
+            return "请输入字母、数字、空格和特殊字符"
+        case .code128:
+            return "请输入任意ASCII字符"
+        case .itf14:
+            return "请输入14位数字，如：12345678901234"
+        case .pdf417:
+            return "请输入任意ASCII字符"
+        }
+    }
+    
+    // MARK: - 输入框占位符文本
+    private func getPlaceholderText() -> String {
+        if selectedDataType == .barcode {
+            switch selectedBarcodeType {
+            case .ean13:
+                return "输入13位数字"
+            case .ean8:
+                return "输入8位数字"
+            case .upce:
+                return "输入8位数字"
+            case .code39:
+                return "输入字母、数字等"
+            case .code128:
+                return "输入任意字符"
+            case .itf14:
+                return "输入14位数字"
+            case .pdf417:
+                return "输入任意字符"
+            }
+        } else {
+            return "请输入内容"
+        }
+    }
+    
+    // MARK: - 播放输入提示音
+    private func playInputSound() {
+        // 使用系统触觉反馈作为输入提示音
+        let impactFeedback = UIImpactFeedbackGenerator(style: .light)
+        impactFeedback.impactOccurred()
+    }
+    
+    // MARK: - 判断输入是否完成
+    private func isInputComplete() -> Bool {
+        if selectedDataType == .barcode {
+            // 条形码需要验证格式正确
+            return validationResult?.isValid == true
+        } else {
+            // 二维码只要有内容就算完成
+            return !content.isEmpty
+        }
     }
     
     private func createCode() {
         guard !content.isEmpty else { return }
-        
+        // 如果是条形码，验证格式
+        if selectedDataType == .barcode {
+            let validation = BarcodeValidator.validateBarcode(content, type: selectedBarcodeType)
+            if !validation.isValid {
+                alertMessage = validation.errorMessage ?? "条形码格式不正确"
+                showingAlert = true
+                return
+            }
+        }
         let context = coreDataManager.container.viewContext
         let historyItem = HistoryItem(context: context)
-        
         historyItem.id = UUID()
         historyItem.content = content
         historyItem.dataType = selectedDataType.rawValue
         historyItem.dataSource = DataSource.created.rawValue
         historyItem.createdAt = Date()
         historyItem.isFavorite = false
-        
         if selectedDataType == .barcode {
             historyItem.barcodeType = selectedBarcodeType.rawValue
         } else {
             historyItem.qrCodeType = selectedQRCodeType.rawValue
         }
-        
         coreDataManager.addHistoryItem(historyItem)
         alertMessage = "\(selectedDataType.displayName)创建成功！"
         showingAlert = true
-        
+        DispatchQueue.main.asyncAfter(deadline: .now() + 1.0) { dismiss() }
-        // 延迟关闭
-        DispatchQueue.main.asyncAfter(deadline: .now() + 1.0) {
-            dismiss()
-        }
     }
 }
 
 #Preview {
     CreateCodeView()
-} 
+}