219 lines
6.7 KiB
Dart
219 lines
6.7 KiB
Dart
import 'dart:convert';
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import 'dart:io';
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import 'dart:math';
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import 'package:aiplot/network/NetworkConfig.dart';
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import 'package:cached_network_image/cached_network_image.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:flutter_cache_manager/flutter_cache_manager.dart';
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import 'package:flutter_easyloading/flutter_easyloading.dart';
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import 'package:http/http.dart' as http;
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import 'package:image_cropper/image_cropper.dart';
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import 'package:image_gallery_saver/image_gallery_saver.dart';
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import 'package:image_picker/image_picker.dart';
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import 'package:mime/mime.dart';
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import 'package:permission_handler/permission_handler.dart';
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class AppUtil {
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/// 默认为下载网络图片，如需下载资源图片，需要指定 [isAsset] 为 `true`。
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static Future<void> saveImage(String imageUrl, {bool isAsset = false}) async {
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try {
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if (imageUrl == null) throw '保存失败，图片不存在！';
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print(NetworkConfig.systemVersion);
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/// 权限检测
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PermissionStatus storageStatus;
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///android13及以上版本 "storage" 已废除 图片 视频 音频权限需要分别申请
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if (int.parse(NetworkConfig.systemVersion) >= 13) {
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storageStatus = await Permission.photos.status;
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} else {
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storageStatus = await Permission.storage.status;
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}
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if (storageStatus != PermissionStatus.granted) {
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if (int.parse(NetworkConfig.systemVersion) >= 13) {
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storageStatus = await Permission.photos.request();
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} else {
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storageStatus = await Permission.storage.request();
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}
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if (storageStatus != PermissionStatus.granted) {
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throw '无法存储图片，请先授权！';
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}
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}
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/// 保存的图片数据
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Uint8List imageBytes;
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if (isAsset == true) {
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/// 保存资源图片
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ByteData bytes = await rootBundle.load(imageUrl);
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imageBytes = bytes.buffer.asUint8List();
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} else {
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Map<String, String> map = {};
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/// 保存网络图片
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CachedNetworkImage image = CachedNetworkImage(imageUrl: imageUrl);
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BaseCacheManager manager = image.cacheManager ?? DefaultCacheManager();
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Map<String, String> headers = image.httpHeaders != null ? image.httpHeaders! : map;
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File file = await manager.getSingleFile(
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image.imageUrl,
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headers: headers,
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);
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imageBytes = await file.readAsBytes();
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}
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/// 保存图片
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final result = await ImageGallerySaver.saveImage(imageBytes, quality: 100);
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if (result == null || result == '') throw '图片保存失败';
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EasyLoading.showToast("Successfully saved");
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} catch (e) {
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print(e.toString());
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}
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}
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///保存Widget图片
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static Future<void> saveWidgetImage(ByteData bytes) async {
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try {
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if (bytes == null) throw '保存失败，图片不存在！';
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/// 权限检测
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PermissionStatus storageStatus;
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///android13及以上版本 "storage" 已废除 图片 视频 音频权限需要分别申请
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if (int.parse(NetworkConfig.systemVersion) >= 13) {
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storageStatus = await Permission.photos.status;
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} else {
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storageStatus = await Permission.storage.status;
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}
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if (storageStatus != PermissionStatus.granted) {
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if (int.parse(NetworkConfig.systemVersion) >= 13) {
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storageStatus = await Permission.photos.request();
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} else {
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storageStatus = await Permission.storage.request();
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}
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if (storageStatus != PermissionStatus.granted) {
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throw '无法存储图片，请先授权！';
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}
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}
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Uint8List imageBytes = bytes.buffer.asUint8List();
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/// 保存图片
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final result = await ImageGallerySaver.saveImage(imageBytes, quality: 100);
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if (result == null || result == '') throw '图片保存失败';
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EasyLoading.showToast("Successfully saved");
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} catch (e) {
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print(e.toString());
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}
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}
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//获取图片
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static Future<XFile> getImages() async {
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final pkImage = await ImagePicker().pickImage(
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source: ImageSource.gallery,
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);
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return pkImage!;
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}
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//裁剪
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static cropImage(String path, int index) async {
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double x = 1.0;
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double y = 1.0;
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switch (index) {
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case 0:
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x = 1.0;
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y = 1.0;
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break;
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case 1:
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x = 3.0;
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y = 4.0;
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break;
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case 2:
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x = 4.0;
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y = 3.0;
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break;
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case 3:
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x = 9.0;
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y = 16.0;
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break;
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case 4:
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x = 16.0;
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y = 9.0;
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break;
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}
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CroppedFile? croppedFile = await ImageCropper().cropImage(
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sourcePath: path,
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aspectRatioPresets: [
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CropAspectRatioPreset.square, //1:1
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],
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aspectRatio: CropAspectRatio(ratioX: x, ratioY: y),
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uiSettings: [
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IOSUiSettings(
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title: 'Cropper',
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aspectRatioLockEnabled: true,
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resetAspectRatioEnabled: false,
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),
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AndroidUiSettings(
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toolbarTitle: 'Cropper',
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toolbarColor: Color(0xFFBE6FDF),
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toolbarWidgetColor: Colors.white,
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activeControlsWidgetColor: Color(0xFFBE6FDF),
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initAspectRatio: CropAspectRatioPreset.square,
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lockAspectRatio: true,
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),
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],
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);
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return croppedFile;
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}
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//解析图片转base64
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static uploadImage(XFile pickedFile) async {
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var file = File(pickedFile.path);
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String? type = lookupMimeType(pickedFile.path); //读取格式
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Uint8List imageBytes = await file.readAsBytes();
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String base64 = base64Encode(imageBytes);
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return "data:$type;base64,$base64";
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}
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//解析图片转base64
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static uploadImage2(File pickedFile) async {
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String? type = lookupMimeType(pickedFile.path); //读取格式
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Uint8List imageBytes = await pickedFile.readAsBytes();
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String base64 = base64Encode(imageBytes);
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return "data:$type;base64,$base64";
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}
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// 获取文件大小
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static String getFileSizeString({int? bytes, int decimals = 0}) {
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if (bytes! <= 0) return "0 Bytes";
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const suffixes = [" Bytes", "KB", "MB", "GB", "TB"];
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var i = (log(bytes) / log(1024)).floor();
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return ((bytes / pow(1024, i)).toStringAsFixed(decimals)) + suffixes[i];
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}
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// 获取文件大小(mb)
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static double getFileSizeDouble({int? bytes, int decimals = 0}) {
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final kb = bytes! / 1024;
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final mb = kb / 1024;
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print("object===$mb");
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return mb;
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}
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///网络图片转base64
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static Future<String?> networkImageToBase64(String imageUrl) async {
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http.Response response = await http.get(Uri.parse(imageUrl));
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final bytes = response.bodyBytes;
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print("bytes===$bytes");
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return bytes != null ? base64Encode(bytes) : null;
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}
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}
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