iOS中app图标圆角半径

括弧里面是对应的半径大小 iTunes Artwork icon ─────────────────512px (90px) App icon(iPhone4) ──────────────────114px (20px) App icon(iPad) ────────────────────72px (12px) App icon(iPhone 3G/3GS) ───────────────57px(10px) Spotlight/Settings icon icon(iPhone4) ──────────58px (10px) Spotlight/Settings icon icon(iPhone 3G/3GS/iPad) ──── 29px (9px)