on
The user had already refused these with "don't ask again" before this request, so no dialog can be shown any more — only the app's settings screen will change them.
Return
true when you have handled it yourself, which ends the request here; false, the default, to let the SDK offer its own "open settings" dialog. Cancelling it ends in onDenied; returning from settings checks the permissions again.
Parameters
context
the application context, safe to keep.
blocked
the permanently refused permissions.