220614 carousel_slider.dart

Question

플러터 3.0 버전 carousel_slider : ^4.1.1 import 'package:carousel_slider/carousel_slider.dart' ; import 'package:flutter/material.dart' ; import 'package:netflixapp/model/model_movie.dart' ; class CarouselImage extends StatefulWidget { final List < Movie > ? movies ; CarouselImage ({ Key ? key , required this . movies}) : super (key : key) ; @override State < CarouselImage > createState () => _CarouselImageState () ; } class _CarouselImageState extends State < CarouselImage > { List < Movie > ? movies ; List < Widget > ? images ; List < String > ? keywords ; List < bool > ? likes ; int _currentPage = 0 ; late String _currentKeyword ; @override void initState () { super . initState () ; movies = widget . movies ; images = movies ? . map ((m) => Image . asset ( './images/' + m . poster)) . toList () ; keywords = movies ? . map ((m) => m . keyword) . cast < String >() . toList () ; likes = movies ? . map ((m) => m . like) . cast < bool >() . toList () ; _currentKeyword = keywords ! [ 0 ] ; } @override Widget build ( BuildContext context) { return Container ( child : Column ( children : [ Container ( padding : EdgeInsets . all ( 20 ) , ) , CarouselSlider ( items : images , options : CarouselOptions ( onPageChanged : (index , reason) { setState ( () { _currentPage = index ; _currentKeyword = keywords ! [_currentPage] ; } , ) ; } , ) , ) , Container ( child : Text (_currentKeyword) , ) , ] , ) , ) ; } }

imhw1997 · Answer

Container ( child : Text (_currentKeyword) ,   이부분 _currentKeyword 가 빨간줄로 나오면서 안되는데 어떻게 해야하나요??