import 'package:flutter/material.dart';
import 'package:flutterapp/KlineChartActivity.dart';
import 'package:flutterapp/stateful_learn.dart';
import 'package:flutterapp/stateless_learn.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter主页',
      theme: ThemeData(

        primarySwatch: Colors.blue,
      ),
      home: Scaffold(
        appBar: AppBar(
          title: Text("如何创建flutter路由以及导航"),
        ),
        body: RouterNavigator(),
      ),
      //页面配置信息
      routes: {
        "stateLess": (BuildContext context) => StateLessLearn(),
        "stateFul": (BuildContext context) => StatefulLearn(),
        "kline": (BuildContext context) => Klinechart(),
      },
    );
  }
}

class RouterNavigator extends StatefulWidget {

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

bool byName = false;

class _RouterNavigatorState extends State<RouterNavigator> {


  @override
  Widget build(BuildContext context) {
    return Container(
      child: Column(
        children: <Widget>[
          //点击选择切换
          SwitchListTile(

            value: byName, onChanged: (value) { //监听变化
              setState(() {//发生变化后赋值给byName
                byName=value;
              });
          },
            title: Text("${byName?'':'不'}通过路由进行跳转"),
          ),

          _item("跳转到stateLess页面", StateLessLearn(), "stateLess"),
          _item("跳转到stateFul页面", StatefulLearn(), "stateFul"),
          _item("跳转到kline页面", Klinechart(), "kline"),
        ],
      ),
    );
  }

  _item(String titleText,Widget  route, String routerName) {
    return Container(

      child: RaisedButton(
        onPressed: () {//点击事件
            if(byName){
              Navigator.pushNamed(context, routerName);
            }else{
              Navigator.push(context, MaterialPageRoute(builder: (context)=>route));
            }
        },
        child: Text(titleText),
      ),
    );
  }

}