libdart_openmvg/example/lib/main.dart

75 lines
2.1 KiB
Dart

import 'package:flutter/material.dart';
import 'dart:async';
import 'package:archimedes_mobile_lib/archimedes_mobile_lib.dart' as archimedes_mobile_lib;
void main() {
runApp(const MyApp());
}
class MyApp extends StatefulWidget {
const MyApp({super.key});
@override
State<MyApp> createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
late int sumResult;
late Future<int> sumAsyncResult;
@override
void initState() {
super.initState();
sumResult = archimedes_mobile_lib.sum(1, 2);
sumAsyncResult = archimedes_mobile_lib.sumAsync(3, 4);
}
@override
Widget build(BuildContext context) {
const textStyle = TextStyle(fontSize: 25);
const spacerSmall = SizedBox(height: 10);
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('Native Packages'),
),
body: SingleChildScrollView(
child: Container(
padding: const EdgeInsets.all(10),
child: Column(
children: [
const Text(
'This calls a native function through FFI that is shipped as source in the package. '
'The native code is built as part of the Flutter Runner build.',
style: textStyle,
textAlign: TextAlign.center,
),
spacerSmall,
Text(
'sum(1, 2) = $sumResult',
style: textStyle,
textAlign: TextAlign.center,
),
spacerSmall,
FutureBuilder<int>(
future: sumAsyncResult,
builder: (BuildContext context, AsyncSnapshot<int> value) {
final displayValue =
(value.hasData) ? value.data : 'loading';
return Text(
'await sumAsync(3, 4) = $displayValue',
style: textStyle,
textAlign: TextAlign.center,
);
},
),
],
),
),
),
),
);
}
}