如果使用 Unity 个人版来开发项目，则会在游戏加载时显示默认的启动画面。该画面根据 Player Settings 中的 Default Screen Orientation 选项进行定向。无法更改此启动画面。
Unity Professional Edition users can change the splash screen. You can use any texture in the project as a splash screen.
The size of the texture depends on the target device:
The texture you supply is scaled to fit if necessary.
You can set the splash screen textures using the iOS Player Settings.