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@@ -1604,15 +1604,19 @@ class Utils { |
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Loading.showLoading(context);
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Uint8List result = list;
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Uint8List resultnew;
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if (needResize) {
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result = await resizeImage(list); //重置图片尺寸
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result = await resizeImage(list); //重置图片尺寸，裁剪5:4尺寸
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if (result == null) {
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//取消重置尺寸
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Loading.hideLoading(context);
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return null;
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}
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resultnew = await realComporessList(result); //压缩图片
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} else {
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resultnew = await compressImage(list);
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debugPrint("压缩后图片的大小：${size(result.length)}");
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}
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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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@@ -1624,43 +1628,121 @@ class Utils { |
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// }
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}
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/// 图片压缩 Uint8List -> Uint8List
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static Future<Uint8List> testComporessList(
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BuildContext context, String url) async {
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///本地选择 图片压缩 Uint8List -> Uint8List
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static Future<Uint8List> testFromFileComporessList5R4(
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BuildContext context,
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Uint8List list,
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) 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 result = list;
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result = await resizeImage(list); //重置图片尺寸，裁剪5:4尺寸
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if (result == null) {
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//取消重置尺寸
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Loading.hideLoading(context);
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return null;
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}
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Uint8List resultnew = await realComporessList(result); //压缩图片
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Uint8List resultnew = await compressImage(list);
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debugPrint("压缩后图片的大小：${size(result.length)}");
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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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/// 图片压缩 Uint8List -> Uint8List
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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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// if (result == null) {
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// //取消重置尺寸
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// Loading.hideLoading(context);
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// return null;
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// }
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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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debugPrint("压缩前图片的大小：${size(list.length)}");
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int minHeight = 457; // 指定最小分辨率的高度
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int minWidth = 572; // 指定最小分辨率的宽度
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int quality = imageQuality(list.length);
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print(size(list.length));
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Uint8List result = await FlutterImageCompress.compressWithList(
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list,
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minWidth: minWidth,
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minHeight: minHeight,
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quality: quality,
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);
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debugPrint("压缩后图片的大小：${size(result.length)}");
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return result;
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}
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// 异步方法，压缩图片到指定大小
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static Future<Uint8List> compressImage(Uint8List imageBytes,
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{int quality = 90}) async {
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try {
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print("图片初始大小：${imageBytes.length / 1024 / 1024}MB");
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// 控制压缩后图片大小,不得超过0.5MB
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// int quality = 90;
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while (imageBytes.length > 1024 * 1024 * 2 && quality > 0) {
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imageBytes = await FlutterImageCompress.compressWithList(
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imageBytes,
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quality: quality,
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);
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print('压缩后大小: ${imageBytes.length / 1024 / 1024}MB');
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quality -= 2;
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}
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return imageBytes;
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} catch (e) {
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// 处理异常情况
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print('压缩图片出错：$e');
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return null;
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}
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}
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// 异步方法，压缩图片到指定大小
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static Future<File> compressImageToFile(String path,
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{int quality = 90}) async {
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try {
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File image = File(path);
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Uint8List imageBytes = await image.readAsBytes();
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print("图片初始大小：${imageBytes.length / 1024 / 1024}MB");
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// 控制压缩后图片大小,不得超过0.5MB
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// int quality = 90;
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while (imageBytes.length > 1024 * 1024 * 2 && quality > 0) {
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imageBytes = await FlutterImageCompress.compressWithList(
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imageBytes,
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quality: quality,
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);
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print('压缩后大小: ${imageBytes.length / 1024 / 1024}MB');
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quality -= 2;
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}
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String imgPath = await saveImage(imageBytes);
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return File(imgPath);
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} catch (e) {
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// 处理异常情况
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print('压缩图片出错：$e');
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return null;
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}
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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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...
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