How can get Gallery2's album Width and Height

问题

The picture like below.

• Tap Gallery2, then show the album .Like the below picture

How can I get this album's Width and Height (The center of this )?

• Tap Album,then show the details,Like the below picture

Question:

How can I get those album's Width and Height (each 7 image).

来源：https://stackoverflow.com/questions/15135616/how-can-get-gallery2s-album-width-and-height