I have tried a lot of ways to open a pdf
in default local app for android and iOS but there was no
solutions (example –> when user click on the pdf in my app I want to redirect him to the default app with the selected pdf form my app)

I have tried the open-file package and the problem was it does not open
the default app with full features
like [drawing , etc…]

example –>
it opens the pdf like this (with limited features)

what I want is to open it
with full features like this

also I have tried the url-launcher
but it open the pdf in the browser not in the local default app

opening the pdf in the default app with full features