:
movieDetails
images = movieDetails["images"];
large = images["large"];

import "package:flutter/material.dart";
/ / load request tool
import" package:dio/dio.dart";

Dio dio = new Dio ();

/ / Movie details page
class MovieDetail extends StatefulWidget {
MovieDetail ({Key key, @ required this.id, @ required this.title})

  : super(key: key);

final String id;
final String title;
_ MovieDetailState createState () = > _ MovieDetailState ();
}
class _ MovieDetailState extends State < MovieDetail > {
/ / Movie details
var movieDetails = {};
@ override
void initState () {

super.initState();
//
getMovieDetail();

}
/ / get movie details
getMovieDetail () async {

//
print(widget.id);
var response =
    await dio.get("http://api.douban.com/v2/movie/subject/${widget.id}");
var result = response.data;
// 
if (result != null) {
  setState(() {
    movieDetails = result;
  });
}

}

@ override
Widget build (BuildContext context) {

// print("movie------${movieDetail}");
var detail = movieDetails;
var summary="";
var images={};
var large="";
summary = movieDetails["summary"];
images = movieDetails["images"];
// images = ;

/ / print (images);

large = images["large"];
print(large);
var info = movieDetails["year"]+"/"+movieDetails["countries"].join("/")+"/"+movieDetails["genres"].join("/");
return Scaffold(
    appBar: AppBar(
      title: Text(widget.title),
      centerTitle: true,
    ),
    body: Container(
      child: Column(
        children: <Widget>[
          Container(
            padding: EdgeInsets.only(top: 50, bottom: 30),
            color: Color.fromRGBO(23, 45, 74,1),
            child: Align(
              child: Image.network(
               movieDetails["images"]["large"].toString(),
                width: 200.0,
              ),
              alignment: Alignment.center,
            ),
          ),
          Container(
            child: Column(
              children: <Widget>[
                Padding(
                  padding: EdgeInsets.only(left: 20, top: 20),
                ),
                Container(
                  padding: EdgeInsets.only(left: 20),
                  child: Row(
                    children: <Widget>[
                      Expanded(
                        child: Column(
                          crossAxisAlignment: CrossAxisAlignment.start,
                          mainAxisAlignment: MainAxisAlignment.start,
                          children: <Widget>[
                            Text(
                              "${widget.title}",
                              softWrap: true,
                              style: TextStyle(
                                  fontSize: 22,
                                  fontWeight: FontWeight.bold),
                            ),
                            Text(
                              info,
                              softWrap: true,
                              style: TextStyle(fontSize: 12),
                            ),
                          ],
                        ),
                      ),
                    ],
                  ),
                )
              ],
            ),
          ),
          Container(
            padding: EdgeInsets.only(left: 20,top: 20),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              mainAxisAlignment: MainAxisAlignment.spaceAround,
              children: <Widget>[
                Container(
                  child:Text("",
                    softWrap: true,
                    ),
                ),
                Container(
                  padding: EdgeInsets.only(right: 20,top: 10),
                  child: 
                    Text(
                      summary,
                      maxLines: 40,
                      softWrap: true,
                    ),
                  
                )
              ],
            ),
          ),
        ],
      ),
    )
);

}
}

the environmental background of the problems and what methods you have tried

related codes

/ / Please paste the code text below (do not replace the code with pictures)

what result do you expect? What is the error message actually seen?