A.findNavController（）B.obtainNavController（）C.rememberNavController（）D.createNavController（）
A.NavControllerB.NavGraphC.NavHostD.屏幕
A.導(dǎo)航圖、導(dǎo)航宿主、導(dǎo)航控制器B.導(dǎo)航圖、導(dǎo)航控制器、導(dǎo)航宿主C.導(dǎo)航宿主、導(dǎo)航圖、導(dǎo)航控制器D.導(dǎo)航控制器、導(dǎo)航宿主、導(dǎo)航圖
