LaunchImage.png (320480 for iOS5,6)
LaunchImage@2x.png (640960 for iOS5,6)
LaunchImage-568h@2x.png (6401136 for iOS5,6)
LaunchImage-700-568h@2x.png (6401136 for iOS 7,8)
LaunchImage-700@2x.png (640960 for iOS7,8)
LaunchImage-800-667h@2x.png (7501134 for iOS8)

LaunchImage-800-Portrait-736h@3x.png (1242*2208 for iOS8)

LaunchImage-700-Landscape@2x~ipad.png (20481536 for iOS7,8)
LaunchImage-700-Landscape~ipad.png (1024768 for iOS7,8)
LaunchImage-700-Portrait@2x~ipad.png (15362048 for iOS7,8)
LaunchImage-700-Portrait~ipad.png (7681024 for iOS7,8)
LaunchImage-Landscape@2x~ipad.png (20481536 for iOS5,6)
LaunchImage-Landscape~ipad.png (1024768 for iOS5,6)
LaunchImage-Portrait@2x~ipad.png (15362048 for iOS5,6)
LaunchImage-Portrait~ipad.png (7681024 for iOS5,6)

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AppIcon29x29.png (Spotlight iOS5,6; Setting iOS5-8)
AppIcon29x29@2x.png (Spotlight iOS5,6; Setting iOS5-8)
AppIcon29x29@3x.png (Spotlight iOS5,6; Setting iOS5-8)
AppIcon40x40@2x,png (Spotlight iOS7,8)
AppIcon40x40@3x.png (Spotlight iOS7,8)
AppIcon57x57.png (icon iOS5,6)
AppIcon57x57@2x.png (icon iOS5,6)
AppIcon60x60@2x.png (icon iOS7,8)
AppIcon60x60@3x.png (icon iOS7,8)

AppIcon29x29@2x~ipad.png (Setting iOS 5-8)
AppIcon29x29~ipad.png (Setting iOS 5-8)
AppIcon40x40@2x~ipad.png (Spotlight iOS7,8)
AppIcon40x40~ipad.png (Spotlight iOS7,8)
AppIcon50x50@2x~ipad.png (Spotlight iOS5,6)
AppIcon50x50~ipad.png (Spotlight iOS5,6)
AppIcon72x72@2x~ipad.png (icon iOS5,6)
AppIcon72x72~ipad.png (icon iOS5,6)
AppIcon76x76@2x~ipad.png (icon iOS7,8)
AppIcon76x76~ipad.png
(icon iOS7,8)

iPhone4/4s:[UIImage imageNamed: @"LaunchImage-700"];

iPhone5/5s/5c： [UIImage imageNamed: @"LaunchImage-700-568h"];

iPhone6： [UIImage imageNamed: @"LaunchImage-800-667h"];

iPhone6 plus 豎屏：[UIImage imageNamed: @"LaunchImage-800-Portrait-736h"];

iPhone6 plus 橫屏：[UIImage imageNamed: @"LaunchImage-800-Portrait-736h"];