I find unityplayer was inherited framelayout, when the untiy player activity was create , it set unityplayer to the current activity, during this time, unity maybe load splash screen depend on unity version. load unity engine library, load graphic system, set render setting ...

I am developing unity project with native android, is there any way to load unity engine and present my custom view, if i want to switch to Untiy , then show the unity view , rather than load engine repeat.
is that possible to seperate to load unity engine from create unity view ?