Device Administration Problem after RESTART

I was able to follow and complete the Device Administration Sample. I can successfully lock, wipe data and do other administrative tasks as well.

Case 1: The problem I noticed is that whenever I disable the device administrator (settings->security->choose device administrators) then restart the device, the device administrator is enabled again after restart.

Case 2: Eventhough after I installed my app and did not activate the device administrator through my app. The device administrator is still enabled after restart.

Is this a device administrator feature after restart? or limitation? What 开发者_如何学JAVAcould be wrong? Need some help. Thanks

It's probably a bug in the device because there's no logical reason for that to happen. Try pulling the battery out while the phone is on, then just normally powering off and back on, and if it continues acting weird, uninstall and re-install the app, if it still happens, try a different device or do a factory data reset. Only thing I can think of.