[android-developers] External Storage - Android Ice Cream, Galaxy Nexus

I'm updating an app to work with android 4.0.1 and running into a
problem.

The app generates an xml export using the following code (exception
handling removed):

File file = new
File(Environment.getExternalStoragePublicDirectory("XMLExport").toString());
file.mkdirs();

file = new File(
Environment.getExternalStoragePublicDirectory("XMLExport"),
"tag_data.xml"
);

XmlSerializer serializer = Xml.newSerializer();
StringWriter writer = new StringWriter();
serializer.setOutput(writer);

// build up the xml .....

os = new FileOutputStream(file, false);
out = new OutputStreamWriter(os, "UTF8");
out.write(writer.toString());
writer.close();
out.close();
os.close();

With android 2.3 this worked perfectly fine, meaning the file showed
up immediately when the phone was connected via USB and could be read
by a PC or whatever.

With android 4.0.1. The directory and file are written correctly
(verified through astro file manager). But the directory and file are
not visible through MTP when I connect my PC via usb. Only if I power
off/on the phone is the xml file and directory finally visible via usb
MTP. (This behavior is also present if I first generate the directory
and file, no usb connect then connect usb, file is still not present
until I power off/on the phone)

The permissions of the directory and file seem OK according to astro,
i.e. drw and -rw.

What am I missing here?

Regards,
Dean

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