手势开始处理逻辑

dimensionhub/Views/Search/SearchView.swift

@@ -54,6 +54,15 @@ struct SearchView: View {
                     .opacity(showSearchResult && searchModel.dramaGroups.isEmpty ? 1 : 0)
             }
         }
+        .background(
+            GestureObserver {
+                // 当检测到系统返回手势时调用
+                if isFocused {
+                    isFocused = false
+                }
+            }
+            .frame(width: 0, height: 0)
+        )
         .navigationTitle("")
         .toolbar {
             ToolbarItem(placement: .principal) {
@@ -123,6 +132,42 @@ struct SearchDramaGroupView: View {
     }
 }
 
+struct GestureObserver: UIViewControllerRepresentable {
+    var onGestureBegin: () -> Void
+
+    func makeUIViewController(context: Context) -> UIViewController {
+        let controller = UIViewController()
+        DispatchQueue.main.async {
+            if let nav = controller.navigationController,
+               let gesture = nav.interactivePopGestureRecognizer {
+                gesture.addTarget(context.coordinator, action: #selector(Coordinator.handleGesture(_:)))
+            }
+        }
+        return controller
+    }
+
+    func updateUIViewController(_ uiViewController: UIViewController, context: Context) { }
+
+    func makeCoordinator() -> Coordinator {
+        Coordinator(onGestureBegin: onGestureBegin)
+    }
+
+    class Coordinator: NSObject {
+        var onGestureBegin: () -> Void
+
+        init(onGestureBegin: @escaping () -> Void) {
+            self.onGestureBegin = onGestureBegin
+        }
+
+        @objc func handleGesture(_ gesture: UIScreenEdgePanGestureRecognizer) {
+            if gesture.state == .began {
+                onGestureBegin()
+            }
+        }
+    }
+}
+
+
 //
 //#Preview {
 //    SearchView()