titan_plugin 0.2.8

titan sdk flutter plugin, you can use the sdk to accelerate app to download media from web.

example/lib/main.dart

import 'dart:async';

import 'package:flutter/material.dart';
import 'package:titan_plugin/titan_plugin.dart';
import 'package:video_player/video_player.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  TitanPlugin.token = 4;
  TitanPlugin.pauseTimeout = 30000;
  TitanPlugin.sleepTimeout = 60000;
  TitanPlugin.listenPort = 6666;
  TitanPlugin.addHttpHeaderBypassKey("key1");
  TitanPlugin.start();
  runApp(TitanDemo());
}

class VideoRoute extends StatefulWidget {
  VideoRoute({Key key, @required this.url}) : super(key: key);
  final String url;

  @override
  State<StatefulWidget> createState() {
    return new _VideoAppState();
  }
}

class _VideoAppState extends State<VideoRoute> {
  VideoPlayerController _controller;

  @override
  void initState() {
    super.initState();
    print("url is " + widget.url);
    _controller = VideoPlayerController.network(widget.url)
      ..initialize().then((_) {
        setState(() {});
      });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: widget.url,
      home: Scaffold(
        appBar: AppBar(
          title: Text("Player"),
        ),
        body: Center(
          child: _controller.value.initialized
              ? AspectRatio(
                  aspectRatio: _controller.value.aspectRatio,
                  child: VideoPlayer(_controller),
                )
              : Container(),
        ),
        floatingActionButton: FloatingActionButton(
          onPressed: () {
            setState(() {
              _controller.value.isPlaying
                  ? _controller.pause()
                  : _controller.play();
            });
          },
          child: Icon(
            _controller.value.isPlaying ? Icons.pause : Icons.play_arrow,
          ),
        ),
      ),
    );
  }

  @override
  void dispose() {
    super.dispose();
    _controller.dispose();
  }
}

class TitanDemo extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Qiniu Titan Plugin 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,
        // This makes the visual density adapt to the platform that you run
        // the app on. For desktop platforms, the controls will be smaller and
        // closer together (more dense) than on mobile platforms.
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: HomePage(title: 'Titan Plugin Demo'),
    );
  }
}

class HomePage extends StatefulWidget {
  HomePage({Key key, this.title}) : super(key: key);

  // This widget is the home page of your application. It is stateful, meaning
  // that it has a State object (defined below) that contains fields that affect
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the App widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

  final String title;

  @override
  _HomePageState createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  String newUrl = "";
  String url = "";

  Future<void> _getVodUrl() async {
    String u2 = await TitanPlugin.getVodUrl(url, "{}");
    String u3 = await TitanPlugin.getDownloadUrl(url, "{}");
    print(u3);
    setState(() {
      // This call to setState tells the Flutter framework that something has
      // changed in this State, which causes it to rerun the build method below
      // so that the display can reflect the updated values. If we changed
      // _counter without calling setState(), then the build method would not be
      // called again, and so nothing would appear to happen.
      newUrl = u2;
    });
  }

  @override
  Widget build(BuildContext context) {
    // This method is rerun every time setState is called, for instance as done
    // by the _incrementCounter method above.
    //
    // The Flutter framework has been optimized to make rerunning build methods
    // fast, so that you can just rebuild anything that needs updating rather
    // than having to individually change instances of widgets.
    return Scaffold(
      appBar: AppBar(
        // Here we take the value from the MyHomePage object that was created by
        // the App.build method, and use it to set our appbar title.
        title: Text(widget.title),
      ),
      body: Center(
        // Center is a layout widget. It takes a single child and positions it
        // in the middle of the parent.
        child: Column(
          // Column is also a layout widget. It takes a list of children and
          // arranges them vertically. By default, it sizes itself to fit its
          // children horizontally, and tries to be as tall as its parent.
          //
          // Invoke "debug painting" (press "p" in the console, choose the
          // "Toggle Debug Paint" action from the Flutter Inspector in Android
          // Studio, or the "Toggle Debug Paint" command in Visual Studio Code)
          // to see the wireframe for each widget.
          //
          // Column has various properties to control how it sizes itself and
          // how it positions its children. Here we use mainAxisAlignment to
          // center the children vertically; the main axis here is the vertical
          // axis because Columns are vertical (the cross axis would be
          // horizontal).
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(newUrl),
            TextField(
                autofocus: true,
                decoration: InputDecoration(
                    labelText: "原始URL地址",
                    prefixIcon: Icon(Icons.video_library)),
                onSubmitted: (v) {
                  print("onSubmitted: $v");
                  url = v;
                  _getVodUrl();
                }),
            FlatButton(
              child: Text("open player"),
              textColor: Colors.blue,
              onPressed: () {
                //导航到新路由
                Navigator.push(context, MaterialPageRoute(builder: (context) {
                  return VideoRoute(url: newUrl);
                }));
              },
            ),
          ],
        ),
      ),
    );
  }
}