Android Question [SOLVED]How can I trap the error when a wrong lock screen code is used.

[Zvi]

I've made an app with phone owner's name, email and alternate contact number to be accessed if the phone is lost.
The app includes both main screen and home screen widget and a click on either will call and also send an sms to the alternate contact number.

Now I would like the app/widget to appear when a wrong lock screen code is entered (or even when the wrong code is entered more than x times).

What is the best way to do that?

Thanks for any suggestions...

 

[DonManfred]

What is the best way to do that?

i don´t think there is way at all. You get no notification about a wrong entered code.

 

[Zvi]

But doesn't a wrongly entered code generate an error?
If so, isn't there a service that can listen for that error?

 

[DonManfred]

I don´t think that there is such a listener possible.

 

[wes58]

i don´t think there is way at all. You get no notification about a wrong entered code.

It is (or at least it was) possible with Device Administration - https://stackoverflow.com/questions...-screen-incorrect-password-by-user-in-android
https://developer.android.com/guide/topics/admin/device-admin. Now some of the function are deprecated - typical to Google, always making OS changes and limit functionality.

 

[Zvi]

Thanks for the info. I'm going to play around with this a bit and if I make any progress I'll post the code.

 

[wes58]

Thanks for the info. I'm going to play around with this a bit and if I make any progress I'll post the code.

Did you have a look at this thread? https://www.b4x.com/android/forum/threads/device-administrator-library.19208/#content
I think everything what you need is there.

 

[Zvi]

Brilliant! Thanks, looks like just what I needed.