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javaandroidandroid-studioadbgoogle-nexus

How do I get the files I stored with my app (Android) on my PC?

I created json files on the internal (private) storage of the app I write for my Google Nexus 5.

I was told, that this is the so-called private app space which I cannot access from my PC unless I either root the phone (not an option) or use the work-around by making backups via adb.

I tried to get access via adb shell. But whenever I try to access the `data? directory I am being told I don't have permissions to access that directory.

How do I get access to this directory and to my files?

Note: I also was told that I should try to use Environment.getExternalStorageState() instead of writing into the private app space. But when I try to write to /storage/emulated/0/ it just won't work either.

I don't care which approach to use, I just need access to the files I create on my PC asap.

Solution

  • This did the job:

    adb shell
run-as PACKAGE.NAME
chmod 771 files
cp files/*.json /sdcard/<SOME_DIR>
adb pull /sdcard/<SOME_DIR> <SOME_LOCAL_DIR>

    other possible solution that also worked for me:

    adb backup -noapk PACKAGE.NAME
dd if=backup.ab bs=24 skip=1|openssl zlib -d > backup.tar
tar -zxvf backup.tar