如何在android file picker中拾取.dwg扩展名文件。当我的文件管理器打开时，此时.dwg文件处于禁用状态。不可选择

字符串[]mimeTypes= { “应用程序/acad”， “image/vnd.dwg”， “图像/x-dwg” };

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从Android的角度来看，这些都是晦涩难懂的MIME类型——AutoCAD DWG文件主要用于桌面操作系统。我不希望平台了解他们。

            Intent intent = new Intent(Intent.ACTION_GET_CONTENT); 
            intent.setType("*/*");
            intent.putExtra(Intent.EXTRA_MIME_TYPES, mimeTypes);
            intent.addCategory(Intent.CATEGORY_OPENABLE);
            intent.putExtra(Intent.EXTRA_LOCAL_ONLY, true);
            startActivityForResult(intent, 9);

    Intent intent;
                String[] mimeTypes =
                    {
                        "image/*",
                        "application/pdf",
                        "image/x-dwg",
                        "image/x-dxf",
                        "image/x-3ds",
                        "application/zip",
                        "application/octet-stream",
                    };
                intent = new Intent(
                    Intent.ACTION_GET_CONTENT);
                intent.setType("*/*");
                intent.putExtra(Intent.EXTRA_MIME_TYPES, mimeTypes);
                intent.addCategory(Intent.CATEGORY_OPENABLE);
                startActivityForResult(intent, 9);

After adding "application/octet-stream" .bin type my files are visible