Without user interaction how to navigate a second page?
Niyazi Toros
Eugenio Tesio
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Niyazi Toros
// TODO: 4) _MyHomePageState Class
class _MyHomePageState extends State<MyHomePage> {
@override
void initState() {
// TODO: implement initState
super.initState();
this.getCompanyJsonData();
}
Future<String> this.getCompanyJsonData() async {
var response = await http.get(
Uri.encodeFull("https://secur****-company-api-*****/fx.jsp"),
headers: {'Accept': 'application/json'});
setState(() {
var resBody = json.decode(response.body);
currencyData = resBody[“alis”];
aAlis = currencyData["aalis"];
bAlis = currencyData[[“balis"];
cAlis = currencyData[“calis"];
});
return "Success!";
}
// TODO: BUILD WIDGET
@override
Widget build(BuildContext context) {
if (currencyData == null){
return new Center(
child: new CircularProgressIndicator(
backgroundColor: lightMainGreen,
)
);
} else if (aAlis != null) {
// redirect to Second Page
}
else if (bAlis != null) {
// redirect to Third Page
}
else if (cAlis != null) {
// redirect to Fourth Page
}
else {
return new Scaffold(
// APPBAR
// title: ,
appBar: new AppBar(
title: new Text(
trans(context, "main.appTitle"),
style: TextStyle(fontSize: 18.0, fontWeight: FontWeight.w500),
),
//elevation: 1.0,
backgroundColor: midMainGreen,
),
// BODY
body: new Center(
child: new Text(‘No data found’),
),
);
}
} // build Widget
}
Eugenio Tesio
// TODO: 4) _MyHomePageState Class
class _MyHomePageState extends State<MyHomePage> {
@override
void initState() {
// TODO: implement initState
super.initState();
this.getCompanyJsonData();
}
Future<String> this.getCompanyJsonData() async {
var response = await http.get(
Uri.encodeFull("https://secur****-company-api-*****/fx.jsp"),
headers: {'Accept': 'application/json'});
aAlis = currencyData["aalis"];
setState(() {
var resBody = json.decode(response.body);
currencyData = resBody[“alis”];
bAlis = currencyData[[“balis"];
cAlis = currencyData[“calis"];
});
if (aAlis != null) {
Navigator
.of(context)
.push(new MaterialPageRoute(builder: (BuildContext context) {
return new AlisPage(...);
}));
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Niyazi Toros
Eugenio Tesio
// TODO: BUILD WIDGET
@override
Widget build(BuildContext context) {
if (currencyData == null){
return new Center(
child: new CircularProgressIndicator(
backgroundColor: lightMainGreen,
)
);
} else if (aAlis != null) {
return secondPage();
}
else if (bAlis != null) {
return thirdPage();
}
else if (cAlis != null) {
return fourPage();
}
else {
return new Scaffold(
// APPBAR
// title: ,
appBar: new AppBar(
title: new Text(
trans(context, "main.appTitle"),
style: TextStyle(fontSize: 18.0, fontWeight: FontWeight.w500),
),
//elevation: 1.0,
backgroundColor: midMainGreen,
),
// BODY
body: new Center(
child: new Text(‘No data found’),
),
);
}
} // build Widget
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Niyazi Toros
import 'package:flutter/material.dart';
class AlisPage extends StatefulWidget {
@override
_AlisPageState createState() => new _AlisPageState();
}
class _AlisPageState extends State<AlisPage> {
@override
Widget build(BuildContext context) {
return new Container(
child: new Text('Welcome to Second Page...'),
);
}
}
The main.dart:import 'package:flutter/material.dart';
import 'dart:async';
import 'dart:convert';
import 'package:http/http.dart' as http;
import 'package:navigator_capital/aalis.dart';
final Color darkMainGreen = const Color(0xFF689F38);
final Color midMainGreen = const Color(0xFF7CB342);
final Color lightMainGreen = const Color(0xFF8BC34A);
bool appLocaleSet;
Map companyData;
String aAlis;
// TODO: 1) MAIN **********************************************
void main() async {
runApp(new MyApp());
}
// TODO: 2) MyApp *********************************************
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return new MaterialApp(
debugShowCheckedModeBanner: false,
title: "Company",
home: new MyHomePage(),
);
}
}
// TODO: 3) Statefull MyHomePage Class ************************
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => new _MyHomePageState();
}
// TODO: 4) _MyHomePageState Class ****************************
class _MyHomePageState extends State<MyHomePage> {
@override
void initState() {
super.initState();
getCompanyJsonData();
}
Future<String> getCompanyJsonData() async {
var response = await http.get(
Uri.encodeFull("https://*******************************”),
headers: {'Accept': 'application/json'});
setState(() {
var resBody = json.decode(response.body);
companyData = resBody[“alis”];
aAlis = 'aalis';
});
return "Success!";
}
// TODO: BUILD WIDGET ******************************************
@override
Widget build(BuildContext context) {
if (companyData == null){
return new Center(
child: new CircularProgressIndicator(
backgroundColor: lightMainGreen,
)
);
} else if (aAlis != null) {
// redirect to Second Page
// ******* this is not work either ******************
// ******* the AlisPage is in aalis.dart ************
Navigator
.of(context)
.push(new MaterialPageRoute(builder: (BuildContext context){
Widget AlisPage() {
return new Scaffold(
body: new Center(
child: new Text("This is Second Page that returns"),
),
);
}
}));
}
else {
return new Scaffold(
// APPBAR
appBar: new AppBar(
title: new Text('Company'),
),
backgroundColor: midMainGreen,
// BODY
body: new Center(
child: new Text(’Showing the Json Data’),