Android open a srt file to read it

Question

I have .srt files on my android device.

But I don't have any program that allows me to be able to open it to be able to see what the contents of them are.

So I would like to create a simple program that allows me to be able to open the file as if it were a .txt in order to be able to read it.

The problem is how do I specify that that type of .srt extension can be opened by that program.

There is something in the android manifest that allows me to do this.

What I want to do is this:

1. I have my .srt files in my archive
2. When I click on one of these files, it must open the program to be able to read it with the file open