How to create a certificate for android app?

There is a set of symbols for reference to the application that tried to do in a Dialog fragment, but it eats a lot of memory and error out.
Is it possible for example application resources to push .pdf , .doc .html document and open it by means of a smartphone using intent?
June 14th 19 at 19:02
1 answer
June 14th 19 at 19:04
Images drive more literate one, do not load full screen. HTML more universal format, if you do separately.

Find more questions by tags Android