解决搜索页面的焦点获取问题

dimensionhub/Views/Search/SearchBar.swift

@@ -0,0 +1,137 @@
+//
+//  SearchBar.swift
+//  dimensionhub
+//
+//  Created by 安礼成 on 2025/6/30.
+//
+
+import SwiftUI
+
+struct SearchBar: View {
+    // 键盘焦点的控制
+    @Binding var isFirstResponder: Bool
+    @Binding var searchText: String
+    var doSearch: () -> Void
+    
+    var body: some View {
+        HStack(spacing: 8) {
+            ControlledTextField(text: $searchText, placeholder: "搜索..", isFirstResponder: $isFirstResponder, onCommit: doSearch)
+                .textFieldStyle(PlainTextFieldStyle())
+                .padding(8)
+                .background(Color(.systemGray6))
+                .cornerRadius(8)
+                .submitLabel(.search)
+                .textInputAutocapitalization(.never)
+                .disableAutocorrection(true)
+                .keyboardType(.default)
+            
+            Button {
+                if !searchText.isEmpty {
+                    doSearch()
+                    isFirstResponder = false
+                    print("isFirstResponder is set false")
+                }
+            } label: {
+                Text("搜索")
+                    .font(.system(size: 18))
+                    .foregroundColor(.gray)
+            }
+            .padding(.trailing, 10)
+            .disabled(searchText.isEmpty)
+        }
+    }
+    
+}
+
+struct ControlledTextField: UIViewRepresentable {
+    @Binding var text: String
+    var placeholder: String
+    @Binding var isFirstResponder: Bool
+    var onCommit: () -> Void
+    
+    func makeUIView(context: Context) -> UITextField {
+        let textField = UITextField()
+        textField.placeholder = placeholder
+        textField.delegate = context.coordinator
+        textField.returnKeyType = .search
+        textField.autocorrectionType = .no
+        textField.autocapitalizationType = .none
+        textField.clearButtonMode = .whileEditing
+        textField.borderStyle = .none
+        textField.keyboardType = .default
+        textField.font = UIFont.systemFont(ofSize: 17)
+        
+        return textField
+    }
+    
+    func updateUIView(_ uiView: UITextField, context: Context) {
+        // 1. 安全更新文本内容
+        if uiView.text != text {
+            context.coordinator.isUpdatingFromBinding = true
+            uiView.text = text
+            context.coordinator.isUpdatingFromBinding = false
+        }
+        print("call me update UIView: \(isFirstResponder)")
+        
+        // 2. 焦点控制优化
+        if isFirstResponder {
+            if !uiView.isFirstResponder {
+                DispatchQueue.main.async {
+                    uiView.becomeFirstResponder()
+                }
+            }
+        } else {
+            if uiView.isFirstResponder {
+                DispatchQueue.main.async {
+                    uiView.resignFirstResponder()
+                }
+            }
+        }
+    }
+    
+    func makeCoordinator() -> Coordinator {
+        Coordinator(text: $text, isFirstResponder: $isFirstResponder, onCommit: onCommit)
+    }
+    
+    class Coordinator: NSObject, UITextFieldDelegate {
+        @Binding var text: String
+        @Binding var isFirstResponder: Bool
+        
+        var onCommit: () -> Void
+        var isUpdatingFromBinding = false
+        
+        init(text: Binding<String>, isFirstResponder: Binding<Bool>, onCommit: @escaping () -> Void) {
+            self._text = text
+            self._isFirstResponder = isFirstResponder
+            self.onCommit = onCommit
+        }
+        
+        // 获取到了焦点
+        func textFieldDidBeginEditing(_ textField: UITextField) {
+            self.isFirstResponder = true
+        }
+        
+        // 失去焦点
+        func textFieldDidEndEditing(_ textField: UITextField, reason: UITextField.DidEndEditingReason) {
+            self.isFirstResponder = false
+        }
+        
+        func textFieldShouldReturn(_ textField: UITextField) -> Bool {
+            onCommit()
+            self.isFirstResponder = false
+            return true
+        }
+        
+        func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
+            return true
+        }
+        
+        func textFieldDidChangeSelection(_ textField: UITextField) {
+            // 防止循环更新
+            if !isUpdatingFromBinding {
+                text = textField.text ?? ""
+            }
+        }
+    }
+    
+}

dimensionhub/Views/Search/SearchHistoryView.swift

@@ -0,0 +1,70 @@
+//
+//  SearchHistoryView1.swift
+//  dimensionhub
+//
+//  Created by 安礼成 on 2025/6/30.
+//
+
+import SwiftUI
+import SwiftData
+
+struct SearchHistoryView: View {
+    @Query(sort: \SearchHistory.timestamp, order: .reverse) private var historyItems: [SearchHistory]
+    
+    var body: some View {
+        VStack {
+            if historyItems.count > 5 {
+                ForEach(Array(0..<5), id: \.self) { idx in
+                    SearchHistoryItemView(history: historyItems[idx]) {
+                        print("click me")
+                    }
+                }
+                
+                Button {
+                    //self.showHistoryNum = 5
+                } label: {
+                    Text("查看更多历史")
+                        .font(.system(size: 16))
+                        .foregroundColor(.gray)
+                }
+                .buttonStyle(.plain)
+            } else {
+                ForEach(historyItems) { history in
+                    SearchHistoryItemView(history: history) {
+                        print("click me")
+                    }
+                }
+            }
+        }
+    }
+}
+
+
+// 搜索历史
+struct SearchHistoryItemView: View {
+    let history: SearchHistory
+    var onClick: () -> Void
+    
+    var body: some View {
+        HStack(alignment: .center, spacing: 20) {
+            Image("lost_network")
+                .resizable()
+                .clipShape(Circle())
+                .clipped()
+                .frame(width: 25, height: 25)
+            
+            Text(history.keyword)
+                .font(.system(size: 16))
+                .lineLimit(1)
+                .frame(width: 280, alignment: .leading)
+            
+            Button(action: {
+                onClick()
+            }) {
+                Image(systemName: "xmark")
+                    .font(.system(size: 14))
+                    .foregroundColor(.gray)
+            }
+        }
+    }
+}

dimensionhub/Views/Search/SearchView.swift

@@ -6,7 +6,6 @@
 //
 
 import SwiftUI
-import SwiftData
 
 struct SearchView: View {
     @Environment(\.modelContext) var modelContext
@@ -16,7 +15,6 @@ struct SearchView: View {
     @State var searchText: String = ""
     @State var searchModel = SearchModel()
     
-    @FocusState private var isFocused: Bool
     @State private var isSearching = false
     
     // 是否显示搜索结果
@@ -25,61 +23,13 @@ struct SearchView: View {
     // 控制是否需要显示键盘
     @State private var showKeyboard: Bool = true
     
+    @State private var toolbarID = UUID()
+    
+    // 键盘焦点的控制
+    @State private var isFocused: Bool = true
+
     var body: some View {
         VStack(spacing: 12) {
-            HStack(spacing: 12) {
-                Button(action: { dismiss() }) {
-                    Image(systemName: "chevron.left")
-                        .font(.system(size: 20, weight: .medium))
-                        .foregroundColor(.black)
-                }
-                
-                HStack(spacing: 8) {
-                    TextField("搜索...", text: $searchText)
-                        .focused($isFocused)
-                        .textFieldStyle(PlainTextFieldStyle())
-                        .padding(8)
-                        .background(Color(.systemGray6))
-                        .cornerRadius(8)
-                        .submitLabel(.search)
-                        .textInputAutocapitalization(.never)
-                        .disableAutocorrection(true)
-                        .keyboardType(.default)
-                        .onSubmit {
-                            doSearch()
-                        }
-                        .overlay(alignment: .trailing) {
-                            Button(action: {
-                                searchText = ""
-                            }) {
-                                Image(systemName: "multiply.circle.fill")
-                                    .foregroundColor(.gray)
-                                    .padding(.trailing, 8)
-                            }
-                            .opacity(isSearching ? 1 : 0)
-                            .disabled(!isSearching)
-                        }
-
-                    Button {
-                        if !searchText.isEmpty {
-                            doSearch()
-                            isFocused = false // 关闭键盘
-                        }
-                    } label: {
-                        Text("搜索")
-                            .font(.system(size: 18))
-                            .foregroundColor(.gray)
-                    }
-                    .padding(.trailing, 10)
-                    .disabled(searchText.isEmpty)
-                }
-                .onChange(of: searchText) {
-                    isSearching = !searchText.trimmingCharacters(in: .whitespaces).isEmpty
-                }
-            }
-            .frame(height: 50)
-            .padding(.top, 12)
-
             if showSearchResult {
                 if searchModel.dramaGroups.isEmpty {
                     Spacer()
@@ -111,17 +61,25 @@ struct SearchView: View {
             }
             
         }
+        .padding(.top, 10)
+        .background(Color(.systemBackground))
         .navigationTitle("")
-        .navigationBarBackButtonHidden(true)
+        .toolbar {
+            ToolbarItem(placement: .principal) {
+                SearchBar(isFirstResponder: $isFocused, searchText: $searchText) {
+                    doSearch()
+                }
+                .id(toolbarID)
+                .onAppear {
+                    print("searchBar appear")
+                }
+            }
+        }
         .padding(.horizontal, 12)
         .ignoresSafeArea(.keyboard, edges: .bottom) // 避免键盘遮挡
         .onAppear {
-            // 避免过早触发系统输入错误
-            if showKeyboard {
-                DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
-                    isFocused = true
-                }
-            }
+            print("main appear")
+            toolbarID = UUID()
         }
     }
     
@@ -182,70 +140,7 @@ struct SearchDramaGroupView: View {
     }
 }
 
-extension SearchView {
-    
-    struct SearchHistoryView1: View {
-        @Query(sort: \SearchHistory.timestamp, order: .reverse) private var historyItems: [SearchHistory]
-        
-        var body: some View {
-            VStack {
-                if historyItems.count > 5 {
-                    ForEach(Array(0..<5), id: \.self) { idx in
-                        SearchHistoryItemView(history: historyItems[idx]) {
-                            print("click me")
-                        }
-                    }
-                    
-                    Button {
-                        //self.showHistoryNum = 5
-                    } label: {
-                        Text("查看更多历史")
-                            .font(.system(size: 16))
-                            .foregroundColor(.gray)
-                    }
-                    .buttonStyle(.plain)
-                } else {
-                    ForEach(historyItems) { history in
-                        SearchHistoryItemView(history: history) {
-                            print("click me")
-                        }
-                    }
-                }
-            }
-        }
-    }
-    
-    // 搜索历史
-    struct SearchHistoryItemView: View {
-        let history: SearchHistory
-        var onClick: () -> Void
-        
-        var body: some View {
-            HStack(alignment: .center, spacing: 20) {
-                Image("lost_network")
-                    .resizable()
-                    .clipShape(Circle())
-                    .clipped()
-                    .frame(width: 25, height: 25)
-                
-                Text(history.keyword)
-                    .font(.system(size: 16))
-                    .lineLimit(1)
-                    .frame(width: 280, alignment: .leading)
-                
-                Button(action: {
-                    onClick()
-                }) {
-                    Image(systemName: "xmark")
-                        .font(.system(size: 14))
-                        .foregroundColor(.gray)
-                }
-            }
-        }
-    }
-    
-}
-
-#Preview {
-    SearchView()
-}
+//
+//#Preview {
+//    SearchView()
+//}