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lib/page/plan/history/widgets/loading_box.dart

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+import 'package:flutter/cupertino.dart';
+import 'package:plan/widgets/ui_kit/empty/index.dart';
+
+class LoadingBox extends StatelessWidget {
+  final bool loading;
+  final bool isEmpty;
+  final Widget child;
+
+  const LoadingBox({
+    super.key,
+    required this.loading,
+    required this.isEmpty,
+    required this.child,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    ///加载中
+    if (loading) {
+      return SliverFillRemaining(
+        child: Center(
+          child: CupertinoActivityIndicator(
+            radius: 14,
+          ),
+        ),
+      );
+    }
+
+    ///空状态
+    if (isEmpty) {
+      return SliverFillRemaining(
+        child: Empty(
+          title: "No data",
+        ),
+      );
+    }
+
+    ///正常
+    return SliverToBoxAdapter(
+      child: Padding(
+        padding: const EdgeInsets.symmetric(vertical: 15),
+        child: Container(
+          child: child,
+        ),
+      ),
+    );
+  }
+}