使用 Assets 配置 iOS Launch Image 尺寸大全

by Jon

iOS App 打包上传时提示这样的错误：

ERROR ITMS-90096: "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."

大概意思是 LaunchImage 尺寸不全，那到底需要哪些尺寸呢？

1 在 Assets 里新建一个 LaunchImage 资源

首先，在工程中某个 AssestsCatalog 里新建一个对象，并且把类型设置成 iOS LaunchImage：

2 配置图片

然后，勾选 App 需要兼容的设备，并放上对应尺寸的图片：

但是这里的命名让人十分疑惑，比如 2x、Retina 4 这些图片的像素值到底应该是多少呢？请参考下面的表格：

类别 机型/系统 宽 高
iPhone XS Max iOS 12+ iPhone XS Max 1242 2688
iPhone XR iOS 12+ iPhone XR 828 1792
iPhone X iOS 11+ iPhoneX 1125 2436
iPhone Portrait iOS 8,9 Retina HD 5.5 (iPhone 6 Plus) 1242 2208
Retina HD 4.7 (iPhone 6) 750 1334
iPhone Portrait iOS 7-9 2x (iPhone 4) 640 960
Retina 4 (iPhone 5) 640 1136
iPhone Portrait iOS 5,6 1x (iPhone 3) 320 480
2x (iPhone 4) 640 960
Retina 4 (iPhone 5) 640 1136

完整的尺寸列表可通过文末列出的参考链接查看。

3 设置项目的 LaunchImage

最后，在项目设置里选择刚刚配置的 LaunchImage 即可：

参考