Force to use specific pdf viewer in android [closed]

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I want user to use my pdf viewer instead of using OS suggested list of viwer(s). Is there is any chance i can achieve this functionality. I have secure folder where there are pdf files. What ia m looking for is when user opens that folder at that time only my pdf viewer should be used.

Answer 1

Thanks to the FSM you can't. There is no reason for you to take this freedom from end user.

If you need such a requirement, create a viewer application from scratch and asociate it to your own, newly created file extension.