Hooking to override Settings.Global.* values

Question

I'm using the app DevOptsHide to make other apps think the developer mode is disabled. To summarize, we are hooking into Settings.Global.getInt() and Settings.Secure.getInt(), and override values of Settings.Global/Secure.ADB_ENABLED and Settings.Global/Secure.DEVELOPMENT_SETTINGS_ENABLED constants.

I found some points of interest, but I'm not an Android developer, and the app author isn't willing to spend much time working on the app anymore, thus I'm asking the questions here in hope to find some insights.

The originating discussion can be found on DevOptsHide issue #17. The main code is at HideDevOpts.kt.

My questions are:

• I am right when I spotted that when hooking into Settings.Secure.getInt(), in the hook param equals Settings.Secure.* thus detection of access to the desired constants fails, as currently the only checked names are Settings.Global.*?
• I am right when I pointed out that as handleLoadPackage() is executed for each and every package loaded, Settings.Global.getInt() and Settings.Secure.getInt() end up with a huge stack of registered hooks?
  • But maybe there is some singleton mechanism?
  • On the other hand, if you confirm there is an issue, how could it be fixed? Could initZygote() be used instead (maybe it runs too soon)?