I'm trying to simply write a simple XML file to the SD card and I noticed that my Nexus 4 does write the file, but it is not viewable via the MTP protocol using Windows 7.
code:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
CustomerQueryRqType customerQueryRequest = new CustomerQueryRqType();
Serializer serializer = new Persister();
File myFile = new File(Environment.getExternalStorageDirectory() + "/customerQueryRequest.xml");
try {
boolean created = myFile.createNewFile();
serializer.write(customerQueryRequest, myFile);
} catch (Exception e) {
e.printStackTrace();
}
}
I can see the file on the phone itself with Astro File Manager:
but Windows doesn't see it...:
adb shell
on the directory shows:
ls -l
drwxrwxr-x root sdcard_rw 1970-01-16 20:51 Alarms
drwxrwxr-x root sdcard_rw 1970-01-16 20:51 Android
drwxrwxr-x root sdcard_rw 2012-11-21 19:30 DCIM
drwxrwxr-x root sdcard_rw 1970-01-16 20:51 Download
drwxrwxr-x root sdcard_rw 1970-01-16 20:51 Movies
drwxrwxr-x root sdcard_rw 1970-01-16 20:51 Music
drwxrwxr-x root sdcard_rw 1970-01-16 20:51 Notifications
drwxrwxr-x root sdcard_rw 2012-11-19 12:06 Pictures
drwxrwxr-x root sdcard_rw 1970-01-16 20:51 Podcasts
drwxrwxr-x root sdcard_rw 2012-11-19 13:22 Ringtones
drwxrwxr-x root sdcard_rw 2012-11-19 14:33 bluetooth
-rw-rw-r-- root sdcard_rw 79 2012-12-05 22:26 customerQueryRequest.xml
drwxrwxr-x root sdcard_rw 2012-11-20 02:50 data
-rw-rw-r-- root sdcard_rw 11394 2012-11-19 13:54 eightpen_custom_gestures
drwxrwxr-x root sdcard_rw 2012-11-19 13:17 media
What's going on with my Nexus 4? Why is it hiding my things from Windows?
On Xperia Z below code worked just fine:
for 4.4+ use:
(unfortunalelly I dont remember if I have tested it well enough)
http://commonsware.com/blog/2013/11/06/android-4p4-permission-regressions.html
Had a similar issue with my OneplusOne:
After software update (to 6.0.1) i was not able to see my camera pictures when connecting to the computer (PTP and MTP). Both app's SDRescan and SDscanner had no effect.
My solution was to copy all pictures from DCIM to another folder using terminal or any file Explorer app on the Phone. When connecting to computer i was able to see the copied files.. i moved them to my computer and cleared my camera folder. No permanent solution but it fixed the problem for me at least until i do the next backup. =D
Seems to be a known issue affecting Android USB file access over MTP. The MTP cache gets out of date until a reboot of the phone.
A workaround is:
Or just avoid using USB at all. The issue does not affect other methods of accessing the files. For example, try AirDroid to transfer files.
Note: This doesn't work for Android 5.0.2: After clearing "Media Storage" and using an SD Rescanner, the folders appears in Windows 7 as unopenable 4K files. The only solution at that point is to clear once again Media Storage and restart the device
The best workaround I found to the bug mentioned in the accepted answer is to copy data from Android OS to a another machine/server (Linux, MacOS, windows) using SSH.
Optional and recommended
In the Android device
In the machine
rsync -avzhP --inplace --info=progress2 -e 'ssh -p 2222' 192.168.1.5:/storage/emulated/0/DCIM/Camera/ /home/username/path/to/pics/
SSHelper Version 8.5 Copyright 2014, P. Lutus Default password is "admin" (recommend: change it) username@192.168.1.5's password: admin receiving incremental file list
The other suggestions did not work for me:
You can use the following code after file close
Source: https://code.google.com/p/android/issues/detail?id=38282
Recently I faced with the same problem but some additional research helped find hidden files. It seems that Google has made some changes in storage structure. All these files were moved to another folder
This Computer\HTC One\Internal Storage\storage\emulated\0
. But it's strange that not all files were moved.Android 4.4.2