关于Unity启动时间过长（启动黑屏时间长）的问题
https://blog.csdn.net/h5q8n2e7/article/details/50484458
Unity3D游戏开发之“重写Unity android Splash，实现启动无黑屏”
http://www.manew.com/thread-98428-1-1.html
Unity Splash Image 与 Launch场景的背景图无缝衔接
https://blog.csdn.net/anyuanlzh/article/details/50176435
去除unity3d的splash页面（remove unity3d splash image），在android中。
https://blog.csdn.net/jiguangcanhen/article/details/41214205
https://blog.csdn.net/wkkingsam/article/details/52367954