flutter 和 Google 日历错误 400 无效请求

Question

我正在尝试将我的应用程序连接到谷歌日历。

我已按照指示进行操作。激活API，生成API Key和Auth。但我仍然收到此错误。这是我的应用程序开发的最后一步。

我首先测试我找到的一个示例，以了解其工作原理。但我收到一条错误消息。

请问您能给我指出正确的方向吗？我已经查看了很多有关此问题的视频和网页，但没有找到可行的解决方案。谢谢你。

import 'dart:developer';
import 'package:flutter/material.dart';
import "package:googleapis_auth/auth_io.dart";
import 'package:googleapis/calendar/v3.dart';
import 'package:url_launcher/url_launcher.dart';

class CalendarClient {
  static const _scopes =  [CalendarApi.calendarScope];

  insert(title, startTime, endTime) {
    var _clientID = ClientId("here I have my client ID");
    clientViaUserConsent(_clientID, _scopes, prompt).then((AuthClient client) {
      var calendar = CalendarApi(client);
      calendar.calendarList.list().then((value) => print("VAL________$value"));

      String calendarId = "primary";
      Event event = Event(); // Create object of event

      event.summary = title;

      EventDateTime start = EventDateTime();
      start.dateTime = startTime;
      start.timeZone = "GMT+05:00";
      event.start = start;

      EventDateTime end = EventDateTime();
      end.timeZone = "GMT+05:00";
      end.dateTime = endTime;
      event.end = end;
      try {
        calendar.events.insert(event, calendarId).then((value) {
          print("ADDEDDD_________________${value.status}");
          if (value.status == "confirmed") {
            log('Event added in google calendar');
          } else {
            log("Unable to add event in google calendar");
          }
        });
      } catch (e) {
        log('Error creating event $e');
      }
    });
  }

  void prompt(String url) async {
    print("Please go to the following URL and grant access:");
    print("  => $url");
    print("");

    if (await canLaunch(url)) {
      await launch(url);
    } else {
      throw 'Could not launch $url';
    }
  }
}

import 'package:flutter/material.dart';
import 'package:flutter_datetime_picker/flutter_datetime_picker.dart';
import 'calendar_test.dart';

class Home_Test_Calendar_Google extends StatefulWidget {
  const Home_Test_Calendar_Google({super.key});

  @override
 State <Home_Test_Calendar_Google> createState() => _Home_Test_Calendar_GoogleState();
}

class _Home_Test_Calendar_GoogleState extends State<Home_Test_Calendar_Google> {
  CalendarClient calendarClient = CalendarClient();
  DateTime startTime = DateTime.now();
  DateTime endTime = DateTime.now().add(const Duration(days: 1));
  final TextEditingController _eventName = TextEditingController();
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: _body(context),
    );
  }

  _body(BuildContext context) {
    return Center(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: <Widget>[
          Row(
            children: <Widget>[
              TextButton(
                  onPressed: () {
                    DatePicker.showDateTimePicker(context,
                        showTitleActions: true,
                        minTime: DateTime(2022, 11, 5),
                        maxTime: DateTime(2200, 6, 7), onChanged: (date) {
                          print('change $date');
                        }, onConfirm: (date) {
                          setState(() {
                            startTime = date;
                          });
                        }, currentTime: DateTime.now(), locale: LocaleType.en);
                  },
                  child: const Text(
                    'Event Start Time',
                    style: TextStyle(color: Colors.blue),
                  )),
              Text('$startTime'),
            ],
          ),
          Row(
            children: <Widget>[
              TextButton(
                  onPressed: () {
                    DatePicker.showDateTimePicker(context,
                        showTitleActions: true,
                        minTime: DateTime(2019, 3, 5),
                        maxTime: DateTime(2200, 6, 7), onChanged: (date) {
                          print('change $date');
                        }, onConfirm: (date) {
                          setState(() {
                            endTime = date;
                          });
                        }, currentTime: DateTime.now(), locale: LocaleType.en);
                  },
                  child: const Text(
                    'Event End Time',
                    style: TextStyle(color: Colors.blue),
                  )),
              Text('$endTime'),
            ],
          ),
          Padding(
            padding: const EdgeInsets.all(12.0),
            child: TextField(
              controller: _eventName,
              decoration: const InputDecoration(hintText: 'Enter Event name'),
            ),
          ),
          ElevatedButton(
              child: const Text(
                'Insert Event',
              ),
             // color: Colors.grey,
              onPressed: () {
                //log('add event pressed');
                calendarClient.insert(
                  _eventName.text,
                  startTime,
                  endTime,
                );
              }),
        ],
      ),
    );
  }
}

Answer 1

你找到解决办法了吗？如果是，请告诉我 谢谢！