Flutter dart，IF语句后可以使用object方法

Question

Anyone can explain, why after IF statement can can not use object methods?

if(state is CurrentPlayerState){
  state.getPermanentStatsByTitle(); <- The method 'getPermanentStatsByTitle' isn't defined for the type 'PlayerState'.
}

PlayerState - is abstract and really not contain the method. But CurrentPlayerState has the method.

Answer 1

Try casting it:

if(state is CurrentPlayerState){
  (state as CurrentPlayerState).getPermanentStatsByTitle();
}