275 lines
9.0 KiB
Dart
275 lines
9.0 KiB
Dart
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import 'dart:convert';
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import 'dart:io';
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import 'dart:math';
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import 'dart:typed_data';
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import 'dart:ui' as ui;
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import 'dart:ui';
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import 'package:crypto/crypto.dart';
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import "package:dio/dio.dart";
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import 'package:flutter/rendering.dart';
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import 'package:flutter/widgets.dart';
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import 'package:flutter_common/utils/toast_utils.dart';
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import 'package:flutter_easyloading/flutter_easyloading.dart';
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import 'package:image_gallery_saver_plus/image_gallery_saver_plus.dart';
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// import 'package:image_gallery_saver/image_gallery_saver.dart';
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import 'package:path_provider/path_provider.dart';
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import 'package:permission_handler/permission_handler.dart';
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class UploadOss {
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/*
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* @params file 要上传的文件对象
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* @params rootDir 阿里云oss设置的根目录文件夹名字
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* @param fileType 文件类型例如jpg,mp4等
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* @param callback 回调函数我这里用于传cancelToken，方便后期关闭请求
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* @param onSendProgress 上传的进度事件
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*/
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static Future<String> upload(
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String path, {
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String rootDir = "moment",
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required String fileType,
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required String oSSAccessKeyId,
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required String policy,
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required String callback,
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required String signature,
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required String ossDirectory,
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required String ossHost,
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}) async {
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// 生成oss的路径和文件名我这里目前设置的是moment/20201229/test.mp4
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String pathName = "$rootDir/${getDate()}/app-${getRandom(12)}.$fileType";
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// 请求参数的form对象
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FormData formdata = FormData.fromMap({
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'OSSAccessKeyId': oSSAccessKeyId,
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'policy': policy,
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'callback': callback,
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'signature': signature,
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'key': '$ossDirectory$pathName',
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//上传后的文件名
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'success_action_status': '200',
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'file': MultipartFile.fromFileSync(
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path,
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contentType: fileType == 'mp4' ? null : DioMediaType("image", "jpg"),
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filename: "${getRandom(12)}.$fileType",
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),
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});
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await EasyLoading.show(
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// status: 'loading...',
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maskType: EasyLoadingMaskType.black,
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);
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Dio dio = Dio();
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dio.options.responseType = ResponseType.plain;
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// dio.options.method = 'put';
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// dio.options.contentType = "multipart/form-data;image/jpg";
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try {
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// 发送请求
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Response response = await dio.post(
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ossHost,
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data: formdata,
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options: Options(
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contentType: "multipart/form-data;image/jpg",
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headers: {'Content-Type': 'multipart/form-data;image/jpg'},
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),
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);
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print("response ===== $response");
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EasyLoading.dismiss();
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// 成功后返回文件访问路径
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return "$ossHost/$ossDirectory$pathName";
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} on DioError catch (e) {
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EasyLoading.dismiss();
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print("e.message ===== ${e.message}");
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print("e.data ===== ${e.response?.data}");
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// print("e.headers ===== ${e.response?.headers}");
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// print("e.extra ===== ${e.response?.extra}");
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return '';
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}
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}
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/*
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* 生成固定长度的随机字符串
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* */
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static String getRandom(int num) {
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String alphabet = "qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM";
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String left = "";
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for (var i = 0; i < num; i++) {
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// right = right + (min + (Random().nextInt(max - min))).toString();
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left = left + alphabet[Random().nextInt(alphabet.length)];
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}
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return left;
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}
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/// 获取日期
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static String getDate() {
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DateTime now = DateTime.now();
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return "${now.year}${now.month}${now.day}";
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}
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}
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class UploadWidgetOss {
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static Future<String> uploadWidgetImage(
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GlobalKey globalKey, {
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required String oSSAccessKeyId,
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required String policy,
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required String callback,
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required String signature,
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required String ossDirectory,
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required String ossHost,
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}) async {
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///通过globalkey将Widget保存为ui.Image
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ui.Image _image = await getImageFromWidget(globalKey);
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///异步将这张图片保存在手机内部存储目录下
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String? localImagePath = await saveImageByUIImage(_image, isEncode: false);
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///保存完毕后关闭当前页面并将保存的图片路径返回到上一个页面
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String? url = await UploadOss.upload(
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localImagePath,
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fileType: "png",
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oSSAccessKeyId: oSSAccessKeyId,
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policy: policy,
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callback: callback,
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signature: signature,
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ossDirectory: ossDirectory,
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ossHost: ossHost,
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);
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return url;
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}
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// 将一个Widget转为image.Image对象
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static Future<ui.Image> getImageFromWidget(GlobalKey globalKey) async {
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// globalKey为需要图像化的widget的key
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RenderRepaintBoundary? boundary =
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globalKey.currentContext?.findRenderObject() as RenderRepaintBoundary?;
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// 转换为图像
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ui.Image img = await boundary!.toImage(pixelRatio: 2);
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return img;
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}
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///将指定的文件保存到目录空间中。
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///[image] 这里是使用的ui包下的Image
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///[picName] 保存到本地的文件（图片）文件名，如test_image
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///[endFormat]保存到本地的文件（图片）文件格式，如png，
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///[isReplace]当本地存在同名的文件（图片）时，true就是替换
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///[isEncode]对保存的文件（图片）进行编码
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/// 最终保存到本地的文件 （图片）的名称为 picName.endFormat
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static Future<String> saveImageByUIImage(ui.Image image,
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{String? picName,
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String endFormat = "png",
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bool isReplace = true,
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bool isEncode = true}) async {
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///获取本地磁盘路径
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/*
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* 在Android平台中获取的是/data/user/0/com.studyyoun.flutterbookcode/app_flutter
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* 此方法在在iOS平台获取的是Documents路径
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*/
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Directory appDocDir = await getApplicationDocumentsDirectory();
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String appDocPath = appDocDir.path;
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///拼接目录
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if (picName == null || picName.trim().isEmpty) {
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///当用户没有指定picName时，取当前的时间命名
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picName = "${DateTime.now().millisecond.toString()}.$endFormat";
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} else {
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picName = "$picName.$endFormat";
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}
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if (isEncode) {
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///对保存的图片名字加密
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picName = md5.convert(utf8.encode(picName)).toString();
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}
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appDocPath = "$appDocPath/$picName";
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///校验图片是否存在
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var file = File(appDocPath);
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bool exist = await file.exists();
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if (exist) {
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if (isReplace) {
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///如果图片存在就进行删除替换
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///如果新的图片加载失败，那么旧的图片也被删除了
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await file.delete();
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} else {
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///如果图片存在就不进行下载
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return "";
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}
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}
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ByteData? byteData = await image.toByteData(format: ImageByteFormat.png);
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Uint8List pngBytes = byteData!.buffer.asUint8List();
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///将Uint8List的数据格式保存
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await File(appDocPath).writeAsBytes(pngBytes);
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return appDocPath;
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}
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//申请存本地相册权限
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static Future<bool> getPormiation() async {
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if (Platform.isIOS) {
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var status = await Permission.photos.status;
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if (status.isDenied) {
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Map<Permission, PermissionStatus> statuses = await [
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Permission.photos,
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].request();
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// saveImage(globalKey);
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}
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return status.isGranted;
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} else {
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var status = await Permission.storage.status;
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if (status.isDenied) {
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Map<Permission, PermissionStatus> statuses = await [
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Permission.storage,
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].request();
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}
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return status.isGranted;
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}
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}
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///保存到相册
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static void savePhoto(GlobalKey globalKey) async {
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RenderRepaintBoundary? boundary =
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globalKey.currentContext!.findRenderObject() as RenderRepaintBoundary?;
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double dpr = ui.window.devicePixelRatio; // 获取当前设备的像素比
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var image = await boundary!.toImage(pixelRatio: dpr);
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// 将image转化成byte
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ByteData? byteData = await image.toByteData(format: ImageByteFormat.png);
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//获取保存相册权限，如果没有，则申请改权限
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bool permition = await getPormiation();
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var status = await Permission.photos.status;
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if (permition) {
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if (Platform.isIOS) {
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if (status.isGranted) {
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Uint8List images = byteData!.buffer.asUint8List();
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final result = await ImageGallerySaverPlus.saveImage(images,
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quality: 60, name: "hello");
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// EasyLoading.showToast("保存成功");
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ToastUtils.showToast(msg: "保存成功");
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}
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if (status.isDenied) {
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print("IOS拒绝");
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}
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} else {
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//安卓
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if (status.isGranted) {
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print("Android已授权");
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Uint8List images = byteData!.buffer.asUint8List();
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final result =
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await ImageGallerySaverPlus.saveImage(images, quality: 60);
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if (result != null) {
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// EasyLoading.showToast("保存成功");
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ToastUtils.showToast(msg: "保存成功");
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} else {
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print('error');
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// toast("保存失败");
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}
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}
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}
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} else {
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//重新请求--第一次请求权限时，保存方法不会走，需要重新调一次
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savePhoto(globalKey);
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}
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}
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}
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