UIViewの外側に枠線を付ける
import <QuartzCore/QuartzCore.h>
[[uiview layer] setBorderColor:[[UIColor whiteColor] CGColor]];
[[uiview layer] setBorderWidth:1.0];
import <QuartzCore/QuartzCore.h>
[[uiview layer] setBorderColor:[[UIColor whiteColor] CGColor]];
[[uiview layer] setBorderWidth:1.0];