更新睡眠的心率基准图不显示

lib/pages/sleep_report/component/BreatheStandardWidget.dart

@@ -47,11 +47,21 @@ class _BreatheStandardWidgetState extends State<BreatheStandardWidget> {
       final endTime = widget.sleepReport['endTime'];
       List<Map<String, dynamic>> data =
           (widget.sleepReport['brbc'] as List).cast<Map<String, dynamic>>();
-      final dataPoints = data.map((item) {
-        final x = item['st'] as int;
-        final y = (item['value'] as num).toDouble(); // 安全地转换为 double
-        return TimeSeriesPoint(x, y);
-      }).toList();
+      List<TimeSeriesPoint> dataPoints = [];
+
+      if (data != null && data.isNotEmpty) {
+        data.forEach((item) {
+          final x = item['st'] as int;
+          if (item['value'] == null || item['value'] == '') {
+            // return;
+            dataPoints.add(TimeSeriesPoint(x, -1));
+            return;
+          }
+          final y = (item['value'] as num).toDouble(); // 安全地转换为 double
+          // return TimeSeriesPoint(x, y);
+          dataPoints.add(TimeSeriesPoint(x, y));
+        });
+      }
 
       List<Map<String, dynamic>> brs =
           (widget.sleepReport['brs'] as List).cast<Map<String, dynamic>>();
@@ -130,7 +140,8 @@ class _BreatheStandardWidgetState extends State<BreatheStandardWidget> {
                           Container(
                             child: Text(
                               // "呼吸数据介绍".tr,
-                              "呼吸数据是指用户在睡眠过程中呼吸的基本数据，是评估睡眠呼吸质量、筛查睡眠呼吸障碍的核心指标。".tr,
+                              "呼吸数据是指用户在睡眠过程中呼吸的基本数据，是评估睡眠呼吸质量、筛查睡眠呼吸障碍的核心指标。"
+                                  .tr,
                               style: TextStyle(
                                 fontSize: 26.rpx,
                                 color: themeController.currentColor.sc3,