Recipe: Responding to Orientation Changes
A device’s screen geometry may influence how you want to lay out interfaces. For example, a landscape aspect ratio may not provide enough vertical range to fit in all your content. Consider Figure 5-10. The portrait layout places the iTunes album art on top of the album name, the artist name, and a Buy button, with the album price. The landscape layout moves the album art to the left and places the album name, artist, and Buy button in the lower-right corner.
To accomplish this, your layout constraints must be orientation aware. The