A new flutter plugin project.
This project is a starting point for a Flutter plug-in package, a specialized package that includes platform-specific implementation code for Android and/or iOS.
For help getting started with Flutter, view our online documentation, which offers tutorials, samples, guidance on mobile development, and a full API reference.
Android, iOS
For iOS you needed to add this two rows into Info.plist file (see example for details):
<key>io.flutter.embedded_views_preview</key>
<true/>
特别注意：新建项目时只能用objc, 不能用swift不然会报错
flutter create -i objc projName
在pubspec.yaml里加入
dependencies:
flutter_hk: ^0.1.0
你可以用下面的命令安装组件
$ flutter pub get
在代码里
import 'package:flutter_hk/hk_controller.dart';
import 'package:flutter_hk/hk_player.dart';
import 'package:flutter_hk/hk_player_controller.dart';
定义管理控制器及播放器控制器 定义摄像头列表及错误参数
HkController hkController;
HkPlayerController playerController;
Map cameras = null;
String errMsg = null;
初始化
try {
hkController = HkController("hk"); // 必须要有名字，如果有多个摄像头或硬盘录像机就要定义多个
playerController = HkPlayerController(hkController); // 有多个播放器就要定义多个
await hkController.init();
await hkController.login(
this.widget.ip, this.widget.port, this.widget.user, this.widget.psd);
var chans = await hkController.getChans();
if (!mounted) return;
setState(() {
cameras = chans;
});
} catch (e, r) {
setState(() {
errMsg = e.toString();
});
}
定义获取摄像头后的列表方法
Widget buildCameras(Map cameras) {
var list = List<Widget>();
List<int> keys = List.from(cameras.keys);
keys.sort((l, r) => l.compareTo(r));
for (int key in keys) {
list.add(FlatButton(
child: Text(cameras[key]),
padding: EdgeInsets.all(1),
color: Colors.lightBlueAccent,
onPressed: () {
if (this.playerController.isPlaying) {
this.playerController.stop();
}
this.playerController.play(key);
},
));
}
return Container(
height: 200,
child: GridView.count(
crossAxisCount: 5,
padding: EdgeInsets.all(4),
mainAxisSpacing: 4,
crossAxisSpacing: 4,
children: list,
),
);
}
定义build
@override
Widget build(BuildContext context) {
Widget loading() {
if (this.cameras == null) {
if (errMsg == null) {
return Center(
child: Text("登录中。。。"),
);
} else {
return Center(
child: Text(errMsg),
);
}
} else {
return Column(
children: [
buildCameras(this.cameras),
Expanded(
child: Container(
padding: EdgeInsets.all(4),
child: HkPlayer(
controller: this.playerController,
),
),
),
],
);
}
}
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('Plugin example app'),
),
body: loading(),
),
);
}
在不用的时候一定要记得销毁控制器
@override
void dispose() {
this.hkController.logout();
this.hkController.dispose();
super.dispose();
}
完整测试代码
//import 'dart:async';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_hk/hk_controller.dart';
import 'package:flutter_hk/hk_player.dart';
import 'package:flutter_hk/hk_player_controller.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: FirstPage(),
onGenerateRoute: (RouteSettings settings) {
switch (settings.name) {
case "/":
return MaterialPageRoute(
builder: (context) => FirstPage(), maintainState: false);
break;
case "/v":
Map<String, Object> map = settings.arguments;
return MaterialPageRoute(
builder: (context) => SecondPage(map), maintainState: false);
break;
}
});
}
}
class FirstPage extends StatelessWidget {
String ip;
int port = 0;
String user, psd;
GlobalKey<FormState> _formKey = new GlobalKey<FormState>();
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text("海康视频Demo"),
),
body: Form(
key: _formKey,
child: Column(
children: [
TextFormField(
decoration: InputDecoration(
contentPadding: EdgeInsets.all(10), labelText: "请输入ip"),
initialValue: "ip",
onSaved: (v) => this.ip = v,
),
TextFormField(
keyboardType: TextInputType.number,
decoration: InputDecoration(
contentPadding: EdgeInsets.all(10), labelText: "请输入端口"),
initialValue: "192.168.1.20",
onSaved: (v) => this.port = int.parse(v),
),
TextFormField(
decoration: InputDecoration(
contentPadding: EdgeInsets.all(10), labelText: "请输入user"),
initialValue: "admin",
onSaved: (v) => this.user = v,
),
TextFormField(
decoration: InputDecoration(
contentPadding: EdgeInsets.all(10), labelText: "请输入密码"),
initialValue: "admin",
onSaved: (v) => this.psd = v,
),
IconButton(
icon: Icon(Icons.arrow_downward),
onPressed: () {
if (_formKey.currentState.validate()) {
_formKey.currentState.save();
Navigator.pushNamed(context, "/v", arguments: {
"ip": ip,
"port": port,
"user": user,
"psd": psd,
});
}
},
),
IconButton(icon: Icon(Icons.pages),
onPressed: (){
HkController.platformVersion.then((v)=>print("output:" + v));
},)
],
)));
}
}
class SecondPage extends StatefulWidget {
String ip;
int port = 0;
String user, psd;
SecondPage(Map<String, Object> map) {
ip = map["ip"];
port = map["port"];
psd = map["psd"];
user = map["user"];
}
@override
_SecondPageState createState() => _SecondPageState();
}
class _SecondPageState extends State<SecondPage> {
String _platformVersion = 'Unknown';
HkController hkController;
HkPlayerController playerController;
Map cameras = null;
String errMsg = null;
@override
void initState() {
super.initState();
initPlatformState();
}
@override
void dispose() {
this.hkController.logout();
this.hkController.dispose();
super.dispose();
}
// Platform messages are asynchronous, so we initialize in an async method.
Future<void> initPlatformState() async {
try {
hkController = HkController("hk"); // 必须要有名字，如果有多个摄像头或硬盘录像机就要定义多个
playerController = HkPlayerController(hkController); // 有多个播放器就要定义多个
await hkController.init();
await hkController.login(
this.widget.ip, this.widget.port, this.widget.user, this.widget.psd);
var chans = await hkController.getChans();
if (!mounted) return;
setState(() {
cameras = chans;
});
} catch (e, r) {
setState(() {
errMsg = e.toString();
});
}
}
Widget buildCameras(Map cameras) {
var list = List<Widget>();
List<int> keys = List.from(cameras.keys);
keys.sort((l, r) => l.compareTo(r));
for (int key in keys) {
list.add(FlatButton(
child: Text(cameras[key]),
padding: EdgeInsets.all(1),
color: Colors.lightBlueAccent,
onPressed: () {
if (this.playerController.isPlaying) {
this.playerController.stop();
}
this.playerController.play(key);
},
));
}
return Container(
height: 200,
child: GridView.count(
crossAxisCount: 5,
padding: EdgeInsets.all(4),
mainAxisSpacing: 4,
crossAxisSpacing: 4,
children: list,
),
);
}
@override
Widget build(BuildContext context) {
Widget loading() {
if (this.cameras == null) {
if (errMsg == null) {
return Center(
child: Text("登录中。。。"),
);
} else {
return Center(
child: Text(errMsg),
);
}
} else {
return Column(
children: [
buildCameras(this.cameras),
Expanded(
child: Container(
padding: EdgeInsets.all(4),
child: HkPlayer(
controller: this.playerController,
),
),
),
],
);
}
}
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('Plugin example app'),
),
body: loading(),
),
);
}
}