我可以一次插入多个记录吗？

如何解决我可以一次插入多个记录吗？

我是新手，这是我的第一个应用程序，我有此页面，该页面从另一页面获取Daylist（）：

import 'package:flutter/material.dart';
import 'package:jiyanUquraan/components/daylist.dart';
class Days extends StatefulWidget {
  @override
  _DaysState createState() => _DaysState();
}
class _DaysState extends State<Days> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Colors.pink[900],title: Text(
          'ژیان و قورئان',style: TextStyle(fontSize: 30),),centerTitle: true,body: Container(
          decoration: BoxDecoration(
            image: DecorationImage(
              image: AssetImage("assets/images/background.png"),fit: BoxFit.cover,child: DisplayList()),);
  }
}

Daylist（）来自此页面：

import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;
import 'dart:convert';
import 'package:jiyanUquraan/classes/viewdigree.dart';
class DisplayList extends StatefulWidget {
  @override
  _DisplayListState createState() => _DisplayListState();
}
class _DisplayListState extends State<DisplayList> {
  @override
  Widget build(BuildContext context) {
    List digrees = [];
    double _value = 0;
    var widthView = MediaQuery.of(context).size.width;
    Future<List> fetchDigrees() async {
      Map rdata = ModalRoute.of(context).settings.arguments;
      var did = int.parse(rdata['d_id'].toString());
      print(did);
      var url =
          'http://10.0.2.2/jiyan/test/api/activities/activiy_list.php?d_id=$did';
      var response = await http.get(url);
      var data = jsonDecode(response.body);
      for (var x in data) {
        Digree newdigree = Digree(x['index'],x['title_k'],x['title_a'],x['aya'],x['link'],x['activity_k'],x['activity_a']);
        digrees.add(newdigree);
      }
      print(digrees.length);
      print(data);
      return digrees;
    }
    return FutureBuilder(
        future: fetchDigrees(),builder: (context,snapshot) {
          List digrees = snapshot.data;
          print(digrees);
          if (snapshot.data == null) {
            return Center(
              child: Text("Loading"),);
          } else {
            return Container(
              height: MediaQuery.of(context).size.height,width: MediaQuery.of(context).size.width,child: ListView(
                padding: EdgeInsets.fromLTRB(25,20,25,20),shrinkWrap: true,children: <Widget>[
                  Text(snapshot.data[0].title_k,textAlign: TextAlign.center,style: TextStyle(fontSize: 32,color: Colors.white)),//for top margin
                  SizedBox(height: 20.0),// dexription
                  Text(snapshot.data[0].aya,textAlign: TextAlign.justify,textDirection: TextDirection.rtl,style: TextStyle(fontSize: 26,color: Colors.yellow)),// now populating your ListView for `Directionality`
                  Column(
                    children: <Widget>[
                      // Start activities
                      Column(
                          children: snapshot.data.map<Widget>((item) {
                        return Directionality(
                          textDirection: TextDirection.rtl,child: Column(
                            children: <Widget>[
                              Container(
                                decoration: BoxDecoration(
                                    borderRadius: BorderRadius.circular(15),border: Border.all(
                                        width: 2,color: Colors.white),color: Color.fromRGBO(230,200,0.2)),width: widthView,padding: EdgeInsets.all(25),margin: EdgeInsets.fromLTRB(0,25),child: Column(
                                  children: <Widget>[
                                    Text(
                                      item.activity_k,style: TextStyle(
                                          fontSize: 28,SliderTheme(
                                      data: SliderTheme.of(context).copyWith(
                                        activeTrackColor: Colors.red[700],inactiveTrackColor: Colors.red[100],trackShape:
                                            RectangularSliderTrackShape(),trackHeight: 4.0,thumbColor: Colors.redAccent,thumbShape: RoundSliderThumbShape(
                                            enabledThumbRadius: 12.0),overlayColor: Colors.red.withAlpha(32),overlayShape: RoundSliderOverlayShape(
                                            overlayRadius: 28.0),child: Slider(
                                        value: 0,min: 0,max: 100,divisions: 10,label: '$_value',onChanged: null,],)
                            ],);
                      }).toList()),// End activities
                      Text(snapshot.data[0].link,textAlign: TextAlign.right,);
          }
        });
  }
}

此页面显示数据来自服务器，超过一行，每行包含带有活动名称和滑块的文本，它将是该活动的程度，现在我要更改滑块以确定该活动程度的值，我如何通过单击buttun将所有学位一起插入

解决方法

您可以在学位类中使用设置器或获取器函数。当您更改滑块时，可以在学位类中设置值，然后使用学位列表上的任何循环在按钮单击时获取每个列表项的值

如果要通过更改一个滑块来设置每个列表项的度数，则可以使用更改滑块时的循环和设置器功能来实现