feat:更新历史记录模块

lib/provider/health_provider.dart

@@ -1,11 +1,10 @@
 import 'package:fitnote/models/health.dart';
 import 'package:flutter/material.dart';
-import 'package:flutter_common/flutter_common.dart';
 
 class HealthProvider with ChangeNotifier {
-  late HealthRecord formItem;
+  HealthRecord formItem = HealthRecord.getEmpty(DateTime.now());
+  HealthRecord currentRecord = HealthRecord.getEmpty(DateTime.now());
   DateTime selectedDate = DateTime.now();
-  DateTime focusedDate = DateTime.now();
   RecordType type = RecordType.weight;
   bool isEditing = false;
 
@@ -18,6 +17,16 @@ class HealthProvider with ChangeNotifier {
     notifyListeners();
   }
 
+  void updateRecord(HealthRecord record) {
+    currentRecord = record;
+    notifyListeners();
+  }
+
+  void updateSelectDate(DateTime date) {
+    selectedDate = date;
+    notifyListeners();
+  }
+
   void updateWeight(num weight) {
     formItem.weight = weight;
     notifyListeners();