pdf_js_viewer 1.0.4 pdf_js_viewer: ^1.0.4 copied to clipboard
a pdf viewer base pdf.js for flutter.
import 'dart:async';
import 'package:flutter/material.dart';
import 'package:pdf_viewer/pdf_viewer_page.dart';
import 'package:http/http.dart' as http;
import 'package:connectivity_plus/connectivity_plus.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
// This is the theme of your application.
//
// Try running your application with "flutter run". You'll see the
// application has a blue toolbar. Then, without quitting the app, try
// changing the primarySwatch below to Colors.green and then invoke
// "hot reload" (press "r" in the console where you ran "flutter run",
// or simply save your changes to "hot reload" in a Flutter IDE).
// Notice that the counter didn't reset back to zero; the application
// is not restarted.
primarySwatch: Colors.blue,
),
home: const MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({super.key});
@override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
late StreamSubscription<ConnectivityResult> subscription;
String _connectionStatus = 'Unknown';
@override
void initState() {
super.initState();
subscription = Connectivity().onConnectivityChanged.listen((ConnectivityResult result) {
setState(() {
_connectionStatus = result.toString();
});
});
Future.delayed(const Duration(milliseconds: 300),_testHttp);
}
// test http
_testHttp(){
http.get(Uri.parse('https://www.baidu.com')).then((value){
print('http请求成功');
}).catchError((e){
print('http请求错误:$e');
});
}
@override
void dispose() {
subscription.cancel();
super.dispose();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('PDF VIEWER'),
),
body: Container(
alignment: Alignment.center,
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text('网络状态:$_connectionStatus'),
const SizedBox(height: 30),
OutlinedButton(onPressed: (){
Navigator.push(context, MaterialPageRoute(builder: (ctx){
return const PdfViewerPage();
}));
}, child: const Text('Open PDF Detail Page'))
],
),
),
);
}
}