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我试图创建一个设置页面。在它，我想有几个开关。用户将使用它们来管理权限，相机，微型和更多。这里是我写的代码，但显然是错误的，因为它是不能正常工作。当我试图获得IOS权限，我只得到假，即使在IOS设置，权限打开了。2我也编辑了info.plist文件。3请你给点建议好吗？4谢谢。

import 'package:flutter/material.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:settings_ui/settings_ui.dart';

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

  @override
 State<PermissionsSettingsPage> createState() => _PermissionsSettingsPageState();
}

class _PermissionsSettingsPageState extends State<PermissionsSettingsPage> {
  var _cameraPermissionGranted ;
  var _microphonePermissionGranted ;
  var _contactPermissionGranted;
  var _notificationsPermissionGranted;

  @override
  void initState() {
    super.initState();
    _checkPermissions();
  }

  void _checkPermissions() async {
    final cameraStatus = await Permission.camera.status.isGranted;
    final microphoneStatus = await Permission.microphone.status.isGranted;
    final contactStatus = await Permission.contacts.status.isGranted;
    final notificationStatus = await Permission.notification.status.isGranted;
    setState(() {

      if (cameraStatus==true) {_cameraPermissionGranted = true;}
      if (microphoneStatus==true) {_microphonePermissionGranted = true;}
      if (contactStatus==true) {_contactPermissionGranted = true;}
      if (notificationStatus==true) {_notificationsPermissionGranted = true;}

      // _cameraPermissionGranted = cameraStatus.isGranted;

     // _microphonePermissionGranted = microphoneStatus.isGranted;
    });
  }

  void _requestPermission(Permission permission) async {
    final status = await permission.request();
    if (status.isGranted) {
      setState(() {
        if (permission == Permission.camera) {
          _cameraPermissionGranted = true;
        } else if (permission == Permission.microphone) {
          _microphonePermissionGranted = true;
        }
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Permissions'),
      ),
      body: SettingsList(
        sections: [
          SettingsSection(
            title: const Text('Permissions'),
            tiles: [
              SettingsTile.switchTile(
                title: const Text('Camera'),
                leading: const Icon(Icons.camera_alt),
                initialValue: _cameraPermissionGranted,
                onToggle: (value) {
                  /*if (_cameraPermissionGranted) {
                    _requestPermission(Permission.camera);
                  } else {
                    openAppSettings();
                  }*/
                },
              ),
              SettingsTile.switchTile(
                title: const Text('Microphone'),
                leading: const Icon(Icons.mic),
                initialValue: _microphonePermissionGranted,
                onToggle: (value) {
                  /*if (_microphonePermissionGranted) {
                    _requestPermission(Permission.microphone);
                  } else {
                    openAppSettings();
                  }*/
                },
              ),

              SettingsTile.switchTile(
                title: const Text('Contacts'),
                leading: const Icon(Icons.contacts),
                initialValue: _contactPermissionGranted,
                onToggle: (value) {
                  /*if (_microphonePermissionGranted) {
                    _requestPermission(Permission.microphone);
                  } else {
                    openAppSettings();
                  }*/
                },
              ),

              SettingsTile.switchTile(
                title: const Text('Notification'),
                leading: const Icon(Icons.notifications),
                initialValue: _notificationsPermissionGranted,
                onToggle: (value) {
                  /*if (_microphonePermissionGranted) {
                    _requestPermission(Permission.microphone);
                  } else {
                    openAppSettings();
                  }*/
                },
              ),

            ],
          ),
          SettingsSection(
            title: const Text('Settings'),
            tiles: [
              SettingsTile(
                title: const Text('App Settings'),
                leading: const Icon(Icons.settings),
                onPressed: (_) {
                  openAppSettings();
                },
              ),
            ],
          ),
        ],
      ),
    );
  }
}