I'm not sure if you've seen the response Majalis gave someone else in a similar thread; but here's the link to that.
Although, the above link mainly focuses around transferring saves between different android versions. As for the actual in-game progress and gallery, if that doesn't transfer upon the new installation I think one of the only other ways to solve it would be to root your android device.
Also an app such as Total Commander might work too, not sure.