How to remove set-device-owner in Android DPM?
I have made an app device owner using ADB, by following this link : How to make my app a device owner?
but now, I'm not able to revert this.
In the device administration Tab, this option is disabled. Not able to change the value of this app.
Answer
By specifying the android:testOnly="true" attribute in the AndroidManifest.xml it will be possible to uninstall the app or remove admin with:
adb shell dpm remove-active-admin package.name/MyDeviceAdminReceiver
But on a production device, this attribute should not be included and the app will be a non-test admin. From that point, it will not be possible to remove it or uninstall the application without wipe/factory reset.
Thankfully, updates can be done when the app is signed with the same key and when the version code is equal or greater:
adb install -r path/to/kiosk.apk
If you would like to get rid of admin and application on a production device programatically you have to reinstall it with a few new changes. Firstly you can wipe data programmatically if you have permission <wipe-data \> in device_admin_receiver.xml with:
devicePolicyManager.wipeData(DevicePolicyManager.WIPE_RESET_PROTECTION_DATA)
If you don’t have this permission new version should not start LockTask and remove its package from default Home app list with:
devicePolicyManager.clearPackagePersistentPreferredActivities(adminComponentName, packageName)
You could then manually go to Settings to perform a wipe/factory reset.
Information found on https://snow.dog/blog/kiosk-mode-android