iOS-study/iOSFirst/Assets.xcassets/AppIcon.appiconset/Contents.json

{
  "images" : [
    {
      "filename" : "LOGO.png",
      "idiom" : "universal",
      "platform" : "ios",
      "size" : "1024x1024"
    }
  ],
  "info" : {
    "author" : "xcode",
    "version" : 1
  }
}