flutter - Flutter 无法创建目录（操作系统错误：只读文件系统）

Question

我在关注 - 如何从https://docs.flutter.io/flutter/dart-io/Directory-class.html创建目录

new Directory('dir/subdir').create(recursive: true)
  // The created directory is returned as a Future.
  .then((Directory directory) {
    print(directory.path);
});

这是我得到的错误：

FileSystemException：创建失败，路径 = 'dir'（操作系统错误：只读文件系统，errno = 30）

我已启用Storage(WRITE_EXTERNAL_STORAGE)权限。（安卓设备）

我错过了什么？

标签： flutter

Answer 1

知道了（使用 path_provider 插件获取正确的路径）

Directory appDocDirectory = await getApplicationDocumentsDirectory();

new Directory(appDocDirectory.path+'/'+'dir').create(recursive: true)
// The created directory is returned as a Future.
    .then((Directory directory) {
  print('Path of New Dir: '+directory.path);
});