View an apps internal data on a device

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First, make sure your app can be backed up in AndroidManifest.xml, i.e. android:allowBackup is not false.

Backup command:

adb -s <device_id> backup -noapk <>

Create a tar with dd command:

dd if=backup.ab bs=1 skip=24 | python -c "import zlib,sys;sys.stdout.write(zlib.decompress(" > backup.tar

Extract the tar:

tar -xvf backup.tar

You may then view the extracted content.

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