A.可組合項層次結(jié)構(gòu)的頂層B.每個屏幕的頂層C.每個導(dǎo)航圖的頂層D.每個可組合項的頂層
A.findNavController()B.obtainNavController()C.rememberNavController()D.createNavController()
A.NavControllerB.NavGraphC.NavHostD.屏幕