本代码支持 iPhone 6 以下. 支持 iPhone 及 iPad

+(NSString*)getLaunchImageName{NSArray* images= @[@"LaunchImage.png", @"LaunchImage@2x.png",@"LaunchImage-700@2x.png",@"LaunchImage-568h@2x.png",@"LaunchImage-700-568h@2x.png",@"LaunchImage-700-Portrait@2x~ipad.png",@"LaunchImage-Portrait@2x~ipad.png",@"LaunchImage-700-Portrait~ipad.png",@"LaunchImage-Portrait~ipad.png",@"LaunchImage-Landscape@2x~ipad.png",@"LaunchImage-700-Landscape@2x~ipad.png",@"LaunchImage-Landscape~ipad.png",@"LaunchImage-700-Landscape~ipad.png"];UIImage *splashImage;if ([self isDeviceiPhone]){if ([self isDeviceiPhone4] && [self isDeviceRetina]){splashImage = [UIImage imageNamed:images[1]];if (splashImage.size.width!=0)return images[1];elsereturn images[2];}else if ([self isDeviceiPhone5]){splashImage = [UIImage imageNamed:images[1]];if (splashImage.size.width!=0)return images[3];elsereturn images[4];}elsereturn images[0]; //Non-retina iPhone}else if ([[UIDevice currentDevice] orientation]==UIDeviceOrientationPortrait || [[UIDevice currentDevice] orientation] == UIDeviceOrientationPortraitUpsideDown)//iPad Portrait{if ([self isDeviceRetina]){splashImage = [UIImage imageNamed:images[5]];if (splashImage.size.width!=0)return images[5];elsereturn images[6];}else{splashImage = [UIImage imageNamed:images[7]];if (splashImage.size.width!=0)return images[7];elsereturn images[8];}}else{if ([self isDeviceRetina]){splashImage = [UIImage imageNamed:images[9]];if (splashImage.size.width!=0)return images[9];elsereturn images[10];}else{splashImage = [UIImage imageNamed:images[11]];if (splashImage.size.width!=0)return images[11];elsereturn images[12];}}}+(BOOL)isDeviceiPhone{if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone){return TRUE;}return FALSE;}+(BOOL)isDeviceiPhone4{if ([[UIScreen mainScreen] bounds].size.height==480)return TRUE;return FALSE;}+(BOOL)isDeviceRetina{if ([[UIScreen mainScreen] respondsToSelector:@selector(displayLinkWithTarget:selector:)] &&([UIScreen mainScreen].scale == 2.0)) // Retina display{return TRUE;}else // non-Retina display{return FALSE;}}+(BOOL)isDeviceiPhone5{if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone && [[UIScreen mainScreen] bounds].size.height>480){return TRUE;}return FALSE;}