import 'dart:html'; import 'package:flutter/material.dart'; import 'package:flutter_screenutil/flutter_screenutil.dart'; import 'package:hengyi/utils/dio_util.dart'; import '../utils/common_util.dart'; class CountryDetailWidget extends StatelessWidget { CountryDetailWidget(this.countryId, {super.key}); final int countryId; var countryTitleTextSize = 0.0; var countryPicWidth = 0.0; var countryPicHeight = 0.0; var padding = 0.0; var height = 0.0; var textSize = 0.0; var textSize2 = 0.0; var textSize3 = 0.0; var itemHeight = 0.0; var topMarin = 0.0; var bottomMarin = 0.0; @override Widget build(BuildContext context) { if (Util.isWeb()) { countryTitleTextSize = 20.sp; countryPicWidth = 200.w; countryPicHeight = 100.w; padding = 0.3.sw; height = 30.h; textSize = 24.sp; textSize2 = 24.sp; textSize3 = 24.sp; itemHeight = 50.h; topMarin = 30.r; bottomMarin = 10.r; } else { countryTitleTextSize = 72.sp; countryPicWidth = 500.w; countryPicHeight = 250.w; padding = 0.1.sw; height = 40.h; textSize = 72.sp; textSize2 = 72.sp; textSize3 = 72.sp; itemHeight = 80.h; topMarin = 60.r; bottomMarin = 30.r; } return FutureBuilder( future: NetworkUtil().getCountryDetail(countryId), builder: (context, snapshot) { if (snapshot.connectionState == ConnectionState.done) { if (snapshot.hasData) { return Padding( padding: EdgeInsets.only(left: padding, right: padding), child: Column( mainAxisAlignment: MainAxisAlignment.center, children: [ Expanded( flex: 1, child: Column( children: [ Container( margin: EdgeInsets.only(top: 100.r), child: Row( mainAxisAlignment: MainAxisAlignment.center, children: [ Text( snapshot.data?.countryName ?? "", style: TextStyle( fontSize: countryTitleTextSize, fontWeight: FontWeight.bold, color: Colors.black), ), Padding( padding: EdgeInsets.only(left: 10), child: Image( fit: BoxFit.fill, image: NetworkImage( snapshot.data?.countryImgUrl ?? ""), width: countryPicWidth, height: countryPicHeight, ), ) ], ), ), Container( alignment: Alignment.centerLeft, color: Colors.grey[200], height: height, margin: EdgeInsets.only( top: topMarin, bottom: bottomMarin), child: Text( "签证须知:", style: TextStyle( fontSize: textSize, color: Colors.red, fontWeight: FontWeight.bold), ), ), Container( width: 0.8.sw, child: Text( snapshot.data?.countryContent ?? "", style: TextStyle( fontSize: textSize2, color: Colors.black, fontWeight: FontWeight.bold), ), ), Expanded( flex: 1, child: ListView.builder( itemExtent: itemHeight, itemCount: snapshot.data?.countryVisitVisaUrl.length ?? 0, itemBuilder: (context, index) { return ListTile( title: TextButton( onPressed: () { if (snapshot.data != null && snapshot.data!.countryVisitVisaUrl .isNotEmpty) { downLoadFile(snapshot .data! .countryVisitVisaUrl[index] .fileUrl); } }, child: Text( snapshot .data ?.countryVisitVisaUrl[index] .fileName ?? "", style: TextStyle( fontSize: textSize3, color: Colors.red, fontWeight: FontWeight.bold)), ), ); }), ) ], ), ), ], ), ); } else { return Text("Error:${snapshot.error}"); } } else { return Container( alignment: Alignment.center, child: const CircularProgressIndicator(), ); } }); } ///调用浏览器的下载功能下载文件 downLoadFile(url) { AnchorElement anchorElement = AnchorElement(href: url); anchorElement.download = "资料"; anchorElement.click(); } }