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fix:优化图片上传组件，解决png图片报错问题

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伍兴隆
2026-05-12 11:35:21 +08:00
parent aa47bc97d5
commit 1c971fb0b2
7 changed files with 417 additions and 278 deletions
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lib/upload_image/upload_images_tool.dart
+140 -20
View File
@@ -1,5 +1,4 @@
import 'dart:io';
import 'dart:math';
import 'package:flutter/cupertino.dart';
import 'package:flutter_common/upload_image/ossUtil.dart';
@@ -12,6 +11,28 @@ import 'package:image_picker/image_picker.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:wechat_assets_picker/wechat_assets_picker.dart';
class _CompressedImageFile {
const _CompressedImageFile({
required this.path,
required this.fileType,
});
final String path;
final String fileType;
}
class _ImageCompressionTarget {
const _ImageCompressionTarget({
required this.format,
required this.extension,
required this.fileType,
});
final CompressFormat format;
final String extension;
final String fileType;
}
class UploadImagesTool {
static uploadImagesTool({
String? oSSAccessKeyId,
@@ -139,7 +160,9 @@ class UploadImagesTool {
)
: CupertinoActionSheet(
title: const Text('上传图片'),
message: (max == null || max == 0) ? null : Text('请选择上传方式\n相册最多${max}张'),
message: (max == null || max == 0)
? null
: Text('请选择上传方式\n相册最多$max张'),
actions: isAddOtherWidget != null
? <Widget>[
isAddOtherWidget,
@@ -153,7 +176,8 @@ class UploadImagesTool {
policy: policy ?? '',
callback: callback ?? '',
signature: signature ?? '',
chooseImages: (list) => chooseImages?.call(list),
chooseImages: (list) =>
chooseImages?.call(list),
);
Get.back();
},
@@ -169,7 +193,8 @@ class UploadImagesTool {
policy: policy ?? '',
callback: callback ?? '',
signature: signature ?? '',
chooseImages: (list) => chooseImages?.call(list),
chooseImages: (list) =>
chooseImages?.call(list),
);
Get.back();
},
@@ -186,7 +211,8 @@ class UploadImagesTool {
policy: policy ?? '',
callback: callback ?? '',
signature: signature ?? '',
chooseImages: (list) => chooseImages?.call(list),
chooseImages: (list) =>
chooseImages?.call(list),
);
Get.back();
},
@@ -203,7 +229,8 @@ class UploadImagesTool {
callback: callback ?? '',
signature: signature ?? '',
isShowLoading: isShowLoading,
chooseImages: (list) => chooseImages?.call(list),
chooseImages: (list) =>
chooseImages?.call(list),
);
Get.back();
},
@@ -231,11 +258,10 @@ class UploadImagesTool {
String? ossHost,
}) async {
XFile? file = await ImagePicker().pickImage(
source: ImageSource.camera,
maxHeight: 1080,
maxWidth: 1920,
imageQuality: 80
);
source: ImageSource.camera,
maxHeight: 1080,
maxWidth: 1920,
imageQuality: 80);
if (file == null) {
Get.back();
} else {
@@ -267,7 +293,8 @@ class UploadImagesTool {
if (isVideo == true) {
final List<AssetEntity>? result = await AssetPicker.pickAssets(
Get.context!,
pickerConfig: AssetPickerConfig(maxAssets: 1, requestType: RequestType.video),
pickerConfig:
AssetPickerConfig(maxAssets: 1, requestType: RequestType.video),
);
final File? video = await result?.first.file;
String path = await saveNetworkImgGallery(
@@ -283,34 +310,34 @@ class UploadImagesTool {
chooseImages?.call([path]);
} else {
/// 创建临时目录
final Directory tempDir = Directory.systemTemp.createTempSync('compressed_images_');
final Directory tempDir =
Directory.systemTemp.createTempSync('compressed_images_');
final List<AssetEntity>? result = await AssetPicker.pickAssets(
Get.context!,
pickerConfig: AssetPickerConfig(maxAssets: max ?? 50),
);
/// 临时存储选中的图片
final List<XFile> selectedFiles = [];
final List<_CompressedImageFile> selectedFiles = [];
if (result != null && result.isNotEmpty) {
for (int i = 0; i < result.length; i++) {
final File? file = await result[i].file;
if (file != null) {
/// 获取文件扩展名
final String extension = file.absolute.path.split('.').last;
/// 压缩并保存到临时文件
final XFile? compressedFile = await FlutterImageCompress.compressAndGetFile(
file.absolute.path, '${tempDir.path}/${DateTime.now().millisecondsSinceEpoch}_compressed.$extension',
quality: 80, minWidth: 1920, minHeight: 1080);
final _CompressedImageFile? compressedFile =
await _compressGalleryImage(file, tempDir);
if (compressedFile != null) {
selectedFiles.add(compressedFile);
}
}
}
}
/// 上传选中的图片
List<String> list = [];
for (var element in selectedFiles) {
String path = await saveNetworkImgGallery(
element.path,
fileType: element.fileType,
oSSAccessKeyId: oSSAccessKeyId ?? '',
ossHost: ossHost ?? '',
ossDirectory: ossDirectory ?? '',
@@ -325,6 +352,99 @@ class UploadImagesTool {
}
}
static Future<_CompressedImageFile?> _compressGalleryImage(
File file,
Directory tempDir,
) async {
final _ImageCompressionTarget target =
_compressionTargetForPath(file.absolute.path);
final XFile? compressedFile = await _compressImageWithTarget(
file,
tempDir,
target,
);
if (compressedFile != null) {
return _CompressedImageFile(
path: compressedFile.path,
fileType: target.fileType,
);
}
if (target.format == CompressFormat.jpeg) {
return null;
}
const _ImageCompressionTarget fallbackTarget = _ImageCompressionTarget(
format: CompressFormat.jpeg,
extension: 'jpg',
fileType: 'jpg',
);
final XFile? fallbackFile = await _compressImageWithTarget(
file,
tempDir,
fallbackTarget,
);
if (fallbackFile == null) {
return null;
}
return _CompressedImageFile(
path: fallbackFile.path,
fileType: fallbackTarget.fileType,
);
}
static Future<XFile?> _compressImageWithTarget(
File file,
Directory tempDir,
_ImageCompressionTarget target,
) async {
try {
return await FlutterImageCompress.compressAndGetFile(
file.absolute.path,
'${tempDir.path}/${DateTime.now().microsecondsSinceEpoch}_compressed.${target.extension}',
quality: 80,
minWidth: 1920,
minHeight: 1080,
format: target.format,
);
} catch (_) {
return null;
}
}
static _ImageCompressionTarget _compressionTargetForPath(String path) {
final String extension =
path.split('?').first.split('.').last.toLowerCase();
switch (extension) {
case 'png':
return const _ImageCompressionTarget(
format: CompressFormat.png,
extension: 'png',
fileType: 'png',
);
case 'webp':
return const _ImageCompressionTarget(
format: CompressFormat.webp,
extension: 'webp',
fileType: 'webp',
);
case 'heic':
case 'heif':
return const _ImageCompressionTarget(
format: CompressFormat.heic,
extension: 'heic',
fileType: 'heic',
);
case 'jpeg':
case 'jpg':
default:
return const _ImageCompressionTarget(
format: CompressFormat.jpeg,
extension: 'jpg',
fileType: 'jpg',
);
}
}
// 保存网络图片
static Future<String> saveNetworkImg(
XFile file, {