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@@ -28,11 +28,13 @@ import 'package:provider/provider.dart'; |
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import 'package:url_launcher/url_launcher.dart';
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import 'package:crypto/crypto.dart';
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import 'package:flutter_image_compress/flutter_image_compress.dart';
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import 'dart:convert';
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import 'package:webview_flutter/webview_flutter.dart';
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import '../app.dart';
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import 'package:http/http.dart' as http;
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import 'package:image/image.dart' as IMG;
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import 'dart:ui' as ui;
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import 'package:permission_handler/permission_handler.dart';
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import 'package:path_provider/path_provider.dart';
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import 'package:image_cropper/image_cropper.dart';
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// import 'dart:typed_data';
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typedef BookTimeSetCallback = void Function(bool needChange);
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@@ -1166,7 +1168,7 @@ class Utils { |
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String _userName = "gh_487873d353b3";
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String _path = "pack-cookbook/pages/index?rid=$rid&identity=2&sid=$sid";
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String _description = "OneKey";
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Uint8List source = await testComporessList(_thumbnail);
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Uint8List source = await testComporessList(context, _thumbnail);
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var model = new WeChatShareMiniProgramModel(
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webPageUrl: _webPageUrl,
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userName: _userName,
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@@ -1200,7 +1202,7 @@ class Utils { |
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String _path =
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"pack-cookbook/pages/success?rid=$rid&identity=2&hasOnlyShow=1";
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String _description = "OneKey";
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Uint8List source = await testComporessList(_thumbnail);
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Uint8List source = await testComporessList(context, _thumbnail);
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var model = new WeChatShareMiniProgramModel(
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webPageUrl: _webPageUrl,
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userName: _userName,
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@@ -1261,9 +1263,11 @@ class Utils { |
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/// 下载图片
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static downloadFile(String url) async {
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// if (await Permission.storage.request().isGranted) {
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var response = await Dio()
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.get(url, options: Options(responseType: ResponseType.bytes));
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Uint8List result = Uint8List.fromList(response.data);
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return result;
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// print(result);
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// if (result["isSuccess"]) {
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@@ -1277,36 +1281,166 @@ class Utils { |
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}
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/// 图片压缩 Uint8List -> Uint8List
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static Future<Uint8List> testComporessList(String url) async {
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Uint8List result = await downloadFile(url);
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if (result.length < 200 * 1024) {
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return result;
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}
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var quality = 100;
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if (result.length > 4 * 1024 * 1024) {
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static Future<Uint8List> testComporessList(
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BuildContext context, String url) async {
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Loading.showLoading(context);
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Uint8List list = await downloadFile(url); //下载图片
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Uint8List result = await resizeImage(list); //重置图片尺寸
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Uint8List resultnew = await realComporessList(result); //压缩图片
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Loading.hideLoading(context);
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return resultnew;
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// if (result.length < 128 * 1024) {
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// return result;
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// } else {
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// result = await realComporessList(result);
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// return result;
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// }
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}
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static realComporessList(Uint8List list) async {
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int minHeight = 457; // 指定最小分辨率的高度
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int minWidth = 572; // 指定最小分辨率的宽度
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int quality = imageQuality(list.length);
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Uint8List result = await FlutterImageCompress.compressWithList(
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list,
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minWidth: minWidth,
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minHeight: minHeight,
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quality: quality,
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);
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debugPrint("压缩后图片的大小：${size(result.length)}");
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return result;
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}
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/// 根据传入的图片字节长度，返回指定的图片质量
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static int imageQuality(int length) {
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debugPrint("压缩前图片的大小：${size(length)}");
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int quality = 100; // 图片质量指数
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int m = 1024 * 1024; // 1 兆
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if (length < 0.5 * m) {
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quality = 70;
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debugPrint("图片小于 0.5 兆，质量设置为 70");
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} else if (length >= 0.5 * m && length < 1 * m) {
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quality = 60;
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debugPrint("图片大于 0.5 兆小于 1 兆，质量设置为 60");
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} else if (length >= 1 * m && length < 2 * m) {
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quality = 50;
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} else if (result.length > 2 * 1024 * 1024) {
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debugPrint("图片大于 1 兆小于 2 兆，质量设置为 50");
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} else if (length >= 2 * m && length < 3 * m) {
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quality = 60;
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} else if (result.length > 1 * 1024 * 1024) {
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quality = 70;
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} else if (result.length > 0.5 * 1024 * 1024) {
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quality = 80;
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} else if (result.length > 0.25 * 1024 * 1024) {
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quality = 90;
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debugPrint("图片大于 2 兆小于 3 兆，质量设置为 40");
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} else if (length >= 3 * m && length < 4 * m) {
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quality = 30;
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debugPrint("图片大于 3 兆小于 4 兆，质量设置为 30");
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} else {
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quality = 20;
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debugPrint("图片大于 4 兆，质量设置为 20");
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}
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return quality;
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}
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//裁剪图片,改变图片大小
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static Future<Uint8List> resizeImage(Uint8List data) async {
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/**
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//image插件改变图片尺寸 copyCrop、copyResize 两个方法
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Uint8List resizedData = data;
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IMG.Image decodedImage = IMG.decodeImage(data);
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print(decodedImage.width);
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print(decodedImage.height);
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var cropSize = min(decodedImage.width, decodedImage.height);
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int offsetX =
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(decodedImage.width - min(decodedImage.width, decodedImage.height)) ~/
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2;
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int offsetY =
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(decodedImage.height - min(decodedImage.width, decodedImage.height)) ~/
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2;
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IMG.Image resized = IMG.copyCrop(decodedImage,
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x: offsetX, y: offsetY, width: 572, height: 457);
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// IMG.Image resized = IMG.copyResize(decodedImage,
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// width: 572, interpolation: IMG.Interpolation.cubic);
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resizedData = IMG.encodeJpg(resized);
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print(size(resizedData.length));
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ui.Image im = await fun1(resizedData);
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print(im.width);
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print(im.height);
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return resizedData;
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*/
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//image_cropper插件,中心点裁剪固定比例的图片
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String imgPath = await saveImage(data);
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Uint8List afterImg = data;
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if (imgPath != null) {
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final croppedImage = await ImageCropper().cropImage(
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sourcePath: imgPath,
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cropStyle: CropStyle.rectangle,
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compressQuality: 100,
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compressFormat: ImageCompressFormat.jpg,
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aspectRatioPresets: [CropAspectRatioPreset.ratio5x4],
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// aspectRatio: const CropAspectRatio(ratioX: 0.8, ratioY: 1.0)
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);
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print(croppedImage);
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File yourFile = File(croppedImage.path);
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afterImg = await yourFile.readAsBytes();
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}
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var resizeBytes = await FlutterImageCompress.compressWithList(
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result,
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minHeight: 500,
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minWidth: 400,
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quality: quality,
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// rotate: 135,
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);
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IMG.Image decodedImage = IMG.decodeImage(data);
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print(decodedImage.width);
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print(decodedImage.height);
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IMG.Image decodedImageafterImg = IMG.decodeImage(afterImg);
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print(decodedImageafterImg.width);
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print(decodedImageafterImg.height);
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debugPrint("newnenwnewnnwen图片的大小：${size(afterImg.length)}");
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return afterImg;
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}
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//将回调拿到的Uint8List格式的图片转换为File格式
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static Future<String> saveImage(Uint8List imageByte) async {
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bool isGranted = await checkPermissionStorage();
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if (isGranted) {
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//获取临时目录
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var tempDir = await getTemporaryDirectory();
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//生成file文件格式
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var file =
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await File('${tempDir.path}/image_${DateTime.now().millisecond}.jpg')
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.create();
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//转成file文件
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file.writeAsBytesSync(imageByte);
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print("${file.path}");
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return file.path;
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// setState(() {
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// path = file.path;
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// // turn(file);
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// _imageUint8=imageByte;
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// });
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}
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return null;
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}
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print("压缩前：${result.length / 1024}");
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print("压缩后：${resizeBytes.length / 1024}");
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/// 根据传入的字节长度，转换成相应的 M 和 KB
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static String size(int length) {
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String res = "";
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final int unit = 1024;
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final int m = unit * unit; // 1M
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// 如果小于 1 兆，显示 KB
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if (length < 1 * m) {
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res = (length / unit).toStringAsFixed(0) + " KB";
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}
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// 如果大于 1 兆，显示 MB，并保留一位小数
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if (length >= 1 * m) {
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res = (length / m).toStringAsFixed(1) + " MB";
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}
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return res;
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}
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/// Uint8List 转 Image 方式一
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return resizeBytes;
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/// Uint8List 转 Image 方式二
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static Future<ui.Image> fun1(Uint8List list) async {
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ui.Codec codec = await ui.instantiateImageCodec(list);
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ui.FrameInfo frame = await codec.getNextFrame();
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return frame.image;
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}
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//分享邀请函
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@@ -1328,7 +1462,8 @@ class Utils { |
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String _path =
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"pages/customer/index?id=$rid&hasInvitation=1&hasSellerShare=1&uid=$uid";
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String _description = "进入查看包间详情，转发同行好友，还可一键导航到饭店";
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Uint8List source = await testComporessList(_thumbnail);
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Uint8List source = await testComporessList(context, _thumbnail);
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//跳转小程序
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var model = new WeChatShareMiniProgramModel(
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webPageUrl: _webPageUrl,
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