【Flutter】上传图片
import 'dart:io'; import 'package:dio/dio.dart'; import 'package:flutter/material.dart'; import 'package:fluttertoast/fluttertoast.dart';//toast import 'package:image_picker/image_picker.dart';//从相册里面选择图片或者拍照获取照片 class HeadImageUploadPage extends StatefulWidget { @override _HeadImageUploadPageState createState() => _HeadImageUploadPageState(); } class _HeadImageUploadPageState extends State<HeadImageUploadPage> { File _image; Future getImage() async { var image = await ImagePicker.pickImage(source: ImageSource.gallery); _upLoadImage(image);//上传图片 setState(() { _image = image; }); } @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: Text('Image Picker Example'), ), body: Center( child: _image == null ? Text('No image selected.') : Image.file(_image), ), floatingActionButton: FloatingActionButton( onPressed: getImage, tooltip: 'Pick Image', child: Icon(Icons.add_a_photo), ), ); } //上传图片 _upLoadImage(File image) async { String path = image.path; var name = path.substring(path.lastIndexOf("/") + 1, path.length); FormData formData = new FormData.from({ "file": new UploadFileInfo(new File(path), name) }); Dio dio = new Dio(); var respone = await dio.post<String>("路径", data: formData); if (respone.statusCode == 200) { Fluttertoast.showToast( msg: "图片上传成功", gravity: ToastGravity.CENTER, textColor: Colors.grey); } } }