小编Pri*_*huG的帖子

下面我分享了我的 flutter 代码，该代码只需选择一个图像并在获得所需的权限后将其显示在屏幕上。然而，该代码在 Android 上运行良好，但当MissingPluginException(No implementation found for method requestPermissions on channel flutter.baseflow.com/permissions/methods)我尝试在网络上上传图像时出现异常。

import 'dart:io';

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

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

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Project2',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  @override
  createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  File _file …