Android Question Autostart setting app

[GaNdAlF89]

Hi, I created a launcher that run my app, and it waits when the app is updating (not from Play Store). I set the launcher as default autostart (launch by default) on Android settings (Complete action using and Always). But the problem is that the user can start the device in safe mode, and then he can delete the autostart clicking on Settings->Applications->(Launcher)->Clear defaults.

How can I solve this? And, there is any way to read the app that is set as "launch by defalut" on device? Other ideas?

Thanks to all!!

 

[GaNdAlF89]

Update:
I need also something like this:
https://play.google.com/store/apps/details?id=com.procoit.kioskbrowser&hl=it
that disable the power button and the drop down menu of android. How can I do this?

 

[Erel]

There is no public API in Android to disable the power button menu.

 

[GaNdAlF89]

There is no public API in Android to disable the power button menu.

Thanks for reply. I tried the app linked in my previous post, and it works as I would like: when I press the power button, or I try to open the Android drop down menu, this app closes them quickly, as if there is a Kiosk. How can I do this (use the Kiosk in these particular cases)?

 

[GaNdAlF89]

Someone knows how to create a similar behavior when user presses the power button, as it is done in this app (no root requested)?
https://play.google.com/store/apps/details?id=com.procoit.kioskbrowser&hl=it

Thanks