Intercepting permission request from application before the system permission check

I am developing a system to grant/deny permissions to Android applications' request based on certain scenario. For this purpose, I want to intercept the request call for permission from android application before the system performs its standard permission verification process. Where should I write my code to Intercept the request call? In 'ActivityManagerService.checkComponentPermission() ' , 'ActivityManager.checkComponentPermission()', or at some other location?

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