Prerequisites:

• a rooted Rockchip-based China tablet device running Android 6, patched to disable SystemUI

• own-developed app which declares LAUNCHER category and is intended to take full conrol of the device

What am I trying to achieve:

install the app as a system app to avoid handling SDK 23+ permissions

What have I done so far:

• installed the app regularly via Android Studio
• moved the app to /system/priv-app:

(root)

ls /data/app/my.package.name-1  base.apk  lib  oat mount -o rw,remount /system mv /data/app/my.package.name-1 /system/priv-app/AppName ls -la /system/priv-app/AppName  -rw-r--r-- system   system    2464934 2017-12-08 11:32 base.apk  drwxr-xr-x system   system            2017-12-08 11:32 lib  drwxrwx--x system   install           2017-12-08 11:32 oat reboot 

What is the problem?

It seems the system is not aware the app exists: it does not run on boot (which it perfectly does when installed as a regular app) and I am unable to launch it manually:

root@rk312x:/ # am start -n my.package.name/.ui.MainActivity Starting: Intent { cmp=my.package.name/.ui.MainActivity } Error type 3 Error: Activity class {my.package.name/my.package.name.ui.MainActivity} does not exist. 

What am I missing?