Image 检查颤振中的图像大小（kb，mb…）？

我知道如何检查图像宽度和高度：

import 'dart:io';

File image = new File('image.png'); // Or any other way to get a File instance.
var decodedImage = await decodeImageFromList(image.readAsBytesSync());
print(decodedImage.width);
print(decodedImage.height)

---

但我想检查图像大小，如100kb、200kb或类似的大小。请帮助我。

使用

lengthInBytes

final bytes = image.readAsBytesSync().lengthInBytes;
final kb = bytes / 1024;
final mb = kb / 1024;

如果要

异步等待

，请使用

final bytes = (await image.readAsBytes()).lengthInBytes;

var file = File('the_path_to_the_image.jpg');
print(file.lengthSync());