问题描述
我想获得一个目录的总大小，包括目录，子文件夹中的文件等等.
I want to get the total size of a directory in flutter, including its files , files in its sub-folders and so on.
我尝试使用 Directory.statSync ，但它似乎只返回目录本身的元大小.
I tried to use Directory.statSync, but it seems to only return the meta size of the directory itself.
我应该递归遍历目录以计算大小吗?如果是这样，是否已经有一个飞镖包(我找不到一个)?
Should I recursively walk the directory to calculate the size? If so, is there a dart package that already does that (I can't find one)?
如果没有，有什么更有效的方法可用?
If not, what more efficient way is available?
推荐答案
这是递归遍历目录(同步版本)的示例.可以使用dir.list()及其listen()方法来完成异步版本.
This is a example walk a directory recursively (sync version).Async version can be done with dir.list() and its listen() method.
Map<String, int> dirStatSync(String dirPath) {
int fileNum = 0;
int totalSize = 0;
var dir = Directory(dirPath);
try {
if (dir.existsSync()) {
dir.listSync(recursive: true, followLinks: false)
.forEach((FileSystemEntity entity) {
if (entity is File) {
fileNum++;
totalSize += entity.lengthSync();
}
});
}
} catch (e) {
print(e.toString());
}
return {'fileNum': fileNum, 'size': totalSize};
}
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