优化键盘收起：支持点击标题栏和空白区域

Note/FormatterView.swift

@@ -15,6 +15,11 @@ struct FormatterView: View {
 
     var body: some View {
         NavigationStack {
+            VStack(spacing: 0) {
+                headerView
+                    .background(Color(hex: "f2f2f7"))
+
+                ScrollView {
                     VStack(spacing: 16) {
                         TextEditor(text: $inputText)
                             .frame(minHeight: 160)
@@ -25,6 +30,14 @@ struct FormatterView: View {
                                 RoundedRectangle(cornerRadius: 8)
                                     .stroke(Color(.systemGray4), lineWidth: 1)
                             )
+                            .toolbar {
+                                ToolbarItemGroup(placement: .keyboard) {
+                                    Spacer()
+                                    Button("完成") {
+                                        dismissKeyboard()
+                                    }
+                                }
+                            }
 
                         Button(action: formatText) {
                             Label("格式化", systemImage: "wand.and.stars")
@@ -60,13 +73,15 @@ struct FormatterView: View {
                             }
                         }
 
-                Spacer()
+                        Spacer(minLength: 16)
                     }
                     .padding()
-            .navigationTitle("文案格式化")
+                }
+                .background(Color(hex: "f2f2f7"))
+            }
             .background(Color(hex: "f2f2f7").ignoresSafeArea())
             .onTapGesture {
-                UIApplication.shared.sendAction(#selector(UIResponder.resignFirstResponder), to: nil, from: nil, for: nil)
+                dismissKeyboard()
             }
             .alert("提示", isPresented: $showEmptyAlert) {
                 Button("确定", role: .cancel) {}
@@ -89,9 +104,31 @@ struct FormatterView: View {
                     .transition(.opacity)
                 }
             }
+            .navigationBarHidden(true)
         }
     }
 
+    private var headerView: some View {
+        HStack {
+            Text("文案格式化")
+                .font(.largeTitle.bold())
+                .foregroundStyle(.primary)
+            Spacer()
+        }
+        .frame(maxWidth: .infinity, minHeight: 44)
+        .padding(.horizontal)
+        .padding(.top, 8)
+        .padding(.bottom, 8)
+        .contentShape(Rectangle())
+        .onTapGesture {
+            dismissKeyboard()
+        }
+    }
+
+    private func dismissKeyboard() {
+        UIApplication.shared.sendAction(#selector(UIResponder.resignFirstResponder), to: nil, from: nil, for: nil)
+    }
+
     private func formatText() {
         if inputText.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty {
             showEmptyAlert = true