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| import 'dart:ui';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'dart:async';
void main() => runApp(new MyApp());
Widget _widgetForRoute(String route) {
switch (route) {
case 'route1':
return MyHomePage(title: 'Flutter Demo Home Page1');
case 'route2':
return MyHomePage(title: 'Flutter Demo Home Page2');
default:
return MyHomePage(title: 'Flutter Demo Home Page2');
}
}
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: _widgetForRoute(window.defaultRouteName),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
int _counter = 0;
//获取到插件与原生的交互通道 需要和android的key一致
static const toAndroidPlugin = const MethodChannel('com.guoshikeji.toandroid/project_details');
static const fromAndroiPlugin = const EventChannel('com.guoshikeji.toflutter/project_details');
StreamSubscription _fromAndroiSub;
var _nativeParams;
@override
void initState() {
// TODO: implement initState
super.initState();
_startfromAndroiPlugin();//在initState中初始化
}
//注册从android获取消息的监听
void _startfromAndroiPlugin(){
if(_fromAndroiSub == null){
_fromAndroiSub = fromAndroiPlugin.receiveBroadcastStream()
.listen(_onfromAndroiEvent,onError: _onfromAndroiError);
}
}
//获取成功的方法
void _onfromAndroiEvent(Object event) {
setState(() {
_nativeParams = event;
});
}
//获取失败的方法
void _onfromAndroiError(Object error) {
setState(() {
_nativeParams = "error";
print(error);
});
}
//发送消息
Future<Null> _jumpToNative() async {
String result = await toAndroidPlugin.invokeMethod('withoutParams');
print(result);
}
//发送带参数的消息
Future<Null> _jumpToNativeWithParams() async {
Map<String, String> map = { "flutter": "这是一条来自flutter的参数" };
String result = await toAndroidPlugin.invokeMethod('withParams', map);
print(result);
}
@override
Widget build(BuildContext context) {
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(
child: new ListView(
children: <Widget>[
new Padding(
padding: const EdgeInsets.only(left: 10.0, top: 10.0, right: 10.0),
child: new RaisedButton(
textColor: Colors.black,
child: new Text('跳转到原生界面'),
onPressed: () {
_jumpToNative();
}),
),
new Padding(
padding: const EdgeInsets.only(
left: 10.0, top: 10.0, right: 10.0),
child: new RaisedButton(
textColor: Colors.black,
child: new Text('跳转到原生界面(带参数)'),
onPressed: () {
_jumpToNativeWithParams();
}),
),
new Padding(
padding: const EdgeInsets.only(
left: 10.0, top: 10.0, right: 10.0),
child: new Text('这是一个从原生获取的参数：$_nativeParams'),
)
, new Padding(
padding: const EdgeInsets.only(
left: 10.0, top: 10.0, right: 10.0),
child: new Text('Flutter floatingActionButton 点击次数$_counter'),
)
],
)
),
);
}
}
|
