How to make my app a device owner?

Question

The device policy manager API docs and the android 5.0 overview both mention something about a device owner app. How can I setup my app as a device owner?

Edit: Is there any other ways than rooting and NFC if available please share.

Answer 1

There's actually a way other than NFC and rooting to set an application as a device owner app. You could use the dpm command line tool from an adb shell.

Usage :

usage: dpm [subcommand] [options] usage: dpm set-device-owner <COMPONENT> usage: dpm set-profile-owner <COMPONENT> <USER_ID>  dpm set-device-owner: Sets the given component as active admin, and its package as device owner. dpm set-profile-owner: Sets the given component as active admin and profile owner for an existing user. 

UPDATE : The dpm utility is really simple actually. Its goal is to create a new file called device_owner.xml under /data/system/device_owner.xml that references the Device/Profile owner apps.

The Android platform is then reading this file to check which application is considered as a Device Owner or Profile Owner App.

On a rooted device, you could indeed create this file by yourself, but since the dpm tool is doing it, you'd better use it (DRY principle) :

For example via a Runtime.exec() command:

Runtime.getRuntime().exec("dpm set-device-owner com.foo.deviceowner/.DeviceAdminRcvr"); 

Also notice that this tool is working only if no account is set for the user (make sure no account is set in Settings > Accounts) before its use.

Source and more information at Android shell command tool : Device Policy Manager