[Android Q&A, Help & Troubleshooting] MrCrayon:
Hi all,

I have a ZP980 rooted running android 4.2.1 that has 1.5GB for app storage and another partition of 26GB in the internal memory mounted as /sdcard used for data.

I wanted to use the big partition to store apps too and since none of the app I tried worked to move some apps to the fake SD I tried to do a script on my own.

PROBLEM:

The script works good but the problem is that if I reboot the phone all files and symlinks are still there but the app is "not installed" so I can't lunch it, I think android makes a scan on boot and maybe /sdcard is not available at that time.

TEMPORARY SOLUTION:

The only way to make it work again is to move the apk back to /data/app and reboot, or remove the symlink and use:

# pm install -r PACKAGE

WHAT I TRIED:

#pm enable PACKAGE

but it looks like it's not disabled that way

WHAT I'D LIKE TO HAVE:

I'd like to find a way to reenable the PACKAGE without having to reinstall it, any clue where android memorize that the app is "installed" or a command to do only that tiny bit and not the whole install process?

SCRIPT (for who interested)

#!/system/bin/sh
sdcard="/storage/sdcard0/Apps"
internal="/data"
data="/data/data"
package="$2"

usage()
{
echo "Usage: $0 [OPTION] [PACKAGE]"
echo
echo "This script copy app and dalvik cache from internal memory to sd and back creating a symlink."
echo
echo "OPTIONS:"
echo " -a Move app and dalvik cache to sd"
echo " -b Move app and dalvik cache back to internal memory"
echo " -r Restore apps after reboot"
echo
echo "PACKAGE"
echo " without .apk"
echo " ES. to move candycrush to sd:"
echo " mv2sd -a com.king.candycrushsaga"
}

function setperm
{
local file=$1
case $type in
"app")
group="system"
;;
"dalvik-cache")
local group=$(ls -ld $data/$package | awk '{print $4}')
;;
esac
chown system:$group $file
chmod 644 $file
}

function mvfile
{
local fileFrom=$1
local fileTo=$2
if [ "$back" -eq 1 ]; then
rm -f $fileTo
local destination="data"
else
local destination="sd"
fi
cp -a $fileFrom $fileTo
if [ $? -ne 0 ]; then
exit $?
else
echo "$package $type moved to $destination"
rm -f $fileFrom
if [ $back -eq 0 ]; then
ln -s $fileTo $fileFrom
else
setperm $fileTo
fi
fi
}

function mvfiles
{
type=$1
case $type in
"app")
local uri="$type/$filename"
;;
"dalvik-cache")
local uri="$type/data@app@$filename@classes.dex"
;;
esac
intFile="$internal/$uri"
sdFile="$sdcard/$uri"
if [ "$back" -eq 0 ] && [ -f "$intFile" ]; then
mvfile $intFile $sdFile
elif [ "$back" -eq 1 ] && [ -L "$intFile" ] && [ -f "$sdFile" ]; then
mvfile $sdFile $intFile
else
echo "$type file or symlink not found"
fi
}
#initialize
back=2
restore=0
while getopts "abrh" option
do
case $option in
a)
back=0;
;;
b)
back=1;
;;
r)
restore=1;
;;
h)
usage
exit
;;
esac
done
if [ "$back" -eq "2" ] && [ "$restore" -eq "0" ]; then
usage
exit 1
fi
#restore
if [ "$restore" -eq "1" ]; then
for file in $sdcard/app/*.apk
do
filename=$(basename "$file")
intFile="$internal/app/$filename"
sdFile="$sdcard/app/$filename"
intDalvik="$internal/dalvik-cache/data@app@$filename@classes.dex"
sdDalvik="$sdcard/dalvik-cache/data@app@$filename@classes.dex"
package="${filename%-*}"
if [ -L "$intFile" ] && [ -f "$sdFile" ] && [ -L "$intDalvik" ] && [ -f "$sdDalvik" ]; then
rm -f $intFile
rm -f $intDalvik
rm -f $sdDalvik
pm install -r $sdFile
rm -f $sdFile
mv2sd -a $package
fi
done
else
file=$(ls $internal/app/$package-*)
filename=$(basename "$file")
#move app
mvfiles "app"
mvfiles "dalvik-cache"
fi
shift $(($OPTIND -1))