请问一下，ios打包后提示Your binary is not optimized for iPhone 5

Your binary is not optimized for iPhone 5 - - New iPhone apps and app updates submitted must support the 4-inch display on iPhone 5 and must include a launch image referenced in the Info.plist under UILaunchImages with a UILaunchImageSize value set to {320, 568}. Launch images must be PNG files and located at the top-level of your bundle, or provided within each .lproj folder if you localize your launch images. Learn more about iPhone 5 support and app launch images by reviewing the 'iOS Human Interface Guidelines' at https://developer.apple.com/ios/human-interface-guidelines/graphics/launch-screen. 二进制不是iPhone 5的优化，求大神回答一下，图片都是按照分辨率调好了，可还是警告状态