When SeattleOnAndroid uninstalled, files still exist in /mnt/sdcard/com.seattletestbed

[choksi81]

After SeattleOnAndroid was uninstalled, /data/data/com.seattletestbed was removed:

/data/data # ls com.seattletestbed
com.seattletestbed: No such file or directory

But files still exist in /mnt/sdcard/

/mnt/sdcard # ls -l
d---rwxr-x system   sdcard_rw          2013-11-18 09:38 com.seattletestbed

[choksi81]

The app has its own "Uninstall" menu item that is meant for this purpose (but see #1322 why we don't always have one). I don't know if we can make it so that the installation process only uses those parts of the file system that the package manager can wipe on uninstall.
That said, the current logic of our app relies on certain files to be at certain places in order to consider itself configured, e.g. the Python binary and nmmain.py. This is probably not a very Android-ish design. We need to look into the proper way of handling such information (key-value store maybe).

[choksi81]

#1343 should make our app's Uninstall button redundant, i.e. the Android package manager's "delete local files" button should provide the same functionality. Yet we can't take it for granted that the user will both "delete local files" and "uninstall app" in the Android package manager. We should probably check during installation whether there is an old install left on the SD card, and overwrite it appropriately.