在flutter中使用图像拾取器时发现方法异常

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

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Image Picker Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  Future<void> _pickImage() async {
    final status = await Permission.photos.request();
    if (status.isGranted) {
      final image = await ImagePicker().getImage(source: ImageSource.gallery);
      if (image != null) {
        // 处理选择的图像
        print('选取的图像路径： ${image.path}');
      }
    } else {
      print('无法访问相册权限');
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Image Picker Demo'),
      ),
      body: Center(
        child: RaisedButton(
          onPressed: _pickImage,
          child: Text('选择图像'),
        ),
      ),
    );
  }
}