feat:增加回到顶部功能

lib/models/moment.g.dart

@@ -52,3 +52,23 @@ Map<String, dynamic> _$MomentToJson(Moment instance) => <String, dynamic>{
   'likeList': instance.likeList,
   'commentList': instance.commentList,
 };
+
+PageMoment _$PageMomentFromJson(Map<String, dynamic> json) => PageMoment(
+  records:
+      (json['records'] as List<dynamic>)
+          .map((e) => Moment.fromJson(e as Map<String, dynamic>))
+          .toList(),
+  total: (json['total'] as num).toInt(),
+  size: (json['size'] as num).toInt(),
+  current: (json['current'] as num).toInt(),
+  pages: (json['pages'] as num).toInt(),
+);
+
+Map<String, dynamic> _$PageMomentToJson(PageMoment instance) =>
+    <String, dynamic>{
+      'records': instance.records,
+      'total': instance.total,
+      'size': instance.size,
+      'current': instance.current,
+      'pages': instance.pages,
+    };