问类型'MappedListIterable<String，Widget>‘不是'List<Widget>’的子类型

EN

import 'package:flutter/material.dart';

class Time extends StatefulWidget {
  @override
  _TimeState createState() => _TimeState();
}

class _TimeState extends State<Time> {
  String time = "Press Button to see time";
  @override
  Widget build(BuildContext context) {
    TimeOfDay startTime = TimeOfDay(hour: 01, minute: 00);
    final endTime = TimeOfDay(hour: 23, minute: 59);
    final step = Duration(minutes: 5);

    Iterable<TimeOfDay> getTimes(
        TimeOfDay startTime, TimeOfDay endTime, Duration step) sync* {
      var hour = startTime.hour;
      var minute = startTime.minute;

      do {
        yield TimeOfDay(hour: hour, minute: minute);
        minute += step.inMinutes;
        while (minute >= 60) {
          minute -= 60;
          hour++;
        }
      } while (hour < endTime.hour ||
          (hour == endTime.hour && minute <= endTime.minute));
    }

    final times = getTimes(startTime, endTime, step)
        .map((tod) => tod.format(context))
        .toList();

    return Scaffold(
      body: SafeArea(
        child: Wrap(
          direction: Axis.horizontal,
          children: times.map<Widget>(
            (t) => Container(
              margin: EdgeInsets.all(10.0),
              decoration: BoxDecoration(
                border: Border.all(
                  color: Colors.deepOrange,
                  width: 1,
                ),
                borderRadius: BorderRadius.circular(
                  10.0,
                ),
              ),
              padding: EdgeInsets.all(10.0),
              child: Text(t),
            ),
          ),
        ),
      ),
    );
  }
}