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https://github.com/flutter/samples.git
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Flutter 3.29 beta (#2571)
This commit is contained in:
Eric Windmill
GitHub
207
pedometer/example/lib/main.dart
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207
pedometer/example/lib/main.dart
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import 'package:fl_chart/fl_chart.dart';
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import 'package:flutter/material.dart';
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import 'package:intl/intl.dart';
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import 'steps_repo.dart';
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void main() {
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runApp(const MyApp());
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}
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class MyApp extends StatelessWidget {
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const MyApp({super.key});
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@override
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Widget build(BuildContext context) {
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return MaterialApp(
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title: 'Flutter Demo',
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theme: ThemeData(primarySwatch: Colors.blue),
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home: const Home(),
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);
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}
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}
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class RoundClipper extends CustomClipper<Path> {
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@override
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Path getClip(Size size) {
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final diameter = size.shortestSide * 1.5;
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final x = -(diameter - size.width) / 2;
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final y = size.height - diameter;
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final rect = Offset(x, y) & Size(diameter, diameter);
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return Path()..addOval(rect);
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}
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@override
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bool shouldReclip(CustomClipper<Path> oldClipper) {
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return false;
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}
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}
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class Home extends StatefulWidget {
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const Home({super.key});
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@override
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State<Home> createState() => _HomeState();
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}
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class _HomeState extends State<Home> {
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var hourlySteps = <Steps>[];
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DateTime? lastUpdated;
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@override
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void initState() {
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runPedometer();
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super.initState();
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}
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void runPedometer() async {
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final now = DateTime.now();
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hourlySteps = await StepsRepo.instance.getSteps();
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lastUpdated = now;
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setState(() {});
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}
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@override
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Widget build(BuildContext context) {
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final textTheme = Theme.of(context).textTheme;
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final barGroups =
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hourlySteps
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.map(
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(e) => BarChartGroupData(
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x: int.parse(e.startHour),
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barRods: [
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BarChartRodData(
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color: Colors.blue[900],
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toY: e.steps.toDouble() / 100,
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),
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],
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),
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)
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.toList();
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return Scaffold(
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body: Stack(
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children: [
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ClipPath(
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clipper: RoundClipper(),
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child: FractionallySizedBox(
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heightFactor: 0.55,
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widthFactor: 1,
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child: Container(color: Colors.blue[300]),
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),
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),
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Align(
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alignment: Alignment.topCenter,
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child: Padding(
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padding: const EdgeInsets.all(80.0),
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child: Column(
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children: [
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lastUpdated != null
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? Padding(
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padding: const EdgeInsets.symmetric(vertical: 50.0),
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child: Text(
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DateFormat.yMMMMd('en_US').format(lastUpdated!),
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style: textTheme.titleLarge!.copyWith(
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color: Colors.blue[900],
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),
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),
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)
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: const SizedBox(height: 0),
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Text(
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hourlySteps.fold(0, (t, e) => t + e.steps).toString(),
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style: textTheme.displayMedium!.copyWith(
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color: Colors.white,
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),
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),
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Text(
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'steps',
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style: textTheme.titleLarge!.copyWith(color: Colors.white),
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),
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],
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),
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),
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),
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Align(
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alignment: Alignment.centerRight,
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child: GestureDetector(
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onTap: runPedometer,
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child: Padding(
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padding: const EdgeInsets.all(20.0),
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child: Container(
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decoration: BoxDecoration(
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color: Colors.blue[900],
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shape: BoxShape.circle,
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),
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child: const Padding(
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padding: EdgeInsets.all(8.0),
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child: Icon(Icons.refresh, color: Colors.white, size: 50),
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),
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),
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),
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),
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),
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Align(
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alignment: Alignment.bottomCenter,
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child: Padding(
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padding: const EdgeInsets.symmetric(
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horizontal: 30.0,
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vertical: 50.0,
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),
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child: AspectRatio(
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aspectRatio: 1.2,
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child: BarChart(
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BarChartData(
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titlesData: const FlTitlesData(
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show: true,
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// Top titles are null
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topTitles: AxisTitles(
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sideTitles: SideTitles(showTitles: false),
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),
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rightTitles: AxisTitles(
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sideTitles: SideTitles(showTitles: false),
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),
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leftTitles: AxisTitles(
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sideTitles: SideTitles(showTitles: false),
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),
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bottomTitles: AxisTitles(
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sideTitles: SideTitles(
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showTitles: true,
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reservedSize: 30,
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getTitlesWidget: getBottomTitles,
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),
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),
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),
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borderData: FlBorderData(show: false),
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barGroups: barGroups,
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gridData: const FlGridData(show: false),
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alignment: BarChartAlignment.spaceAround,
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),
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),
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),
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),
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),
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],
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),
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);
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}
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}
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// Axis labels for bottom of chart.
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Widget getBottomTitles(double value, TitleMeta meta) {
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final timeText = switch (value.toInt()) {
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0 => '12AM',
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6 => '6AM',
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12 => '12PM',
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18 => '6PM',
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_ => '',
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};
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return SideTitleWidget(
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space: 4,
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meta: meta,
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child: Text(
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timeText,
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style: TextStyle(fontSize: 14, color: Colors.blue[900]),
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),
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);
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}
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173
pedometer/example/lib/steps_repo.dart
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173
pedometer/example/lib/steps_repo.dart
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@@ -0,0 +1,173 @@
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import 'dart:async';
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import 'dart:collection';
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import 'dart:ffi' as ffi;
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import 'dart:io';
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import 'package:flutter/foundation.dart';
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import 'package:intl/intl.dart';
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import 'package:jni/jni.dart' as jni;
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import 'package:pedometer/health_connect.dart' as hc;
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import 'package:pedometer/pedometer_bindings_generated.dart' as pd;
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/// Class to hold the information needed for the chart
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class Steps {
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final String startHour;
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final int steps;
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Steps(this.startHour, this.steps);
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}
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abstract class StepsRepo {
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static const _formatString = "yyyy-MM-dd HH:mm:ss";
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static StepsRepo? _instance;
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static StepsRepo get instance =>
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_instance ??= Platform.isAndroid ? _AndroidStepsRepo() : _IOSStepsRepo();
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Future<List<Steps>> getSteps();
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}
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class _IOSStepsRepo implements StepsRepo {
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static const _dylibPath =
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'/System/Library/Frameworks/CoreMotion.framework/CoreMotion';
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// Bindings for the CMPedometer class.
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final lib = pd.PedometerBindings(ffi.DynamicLibrary.open(_dylibPath));
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// Bindings for the helper function.
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final helpLib = pd.PedometerBindings(ffi.DynamicLibrary.process());
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late final pd.CMPedometer client;
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late final pd.NSDateFormatter formatter;
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late final pd.NSDateFormatter hourFormatter;
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_IOSStepsRepo() {
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// Contains the Dart API helper functions
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final dylib = ffi.DynamicLibrary.open("pedometer.framework/pedometer");
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// Initialize the Dart API
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final initializeApi = dylib.lookupFunction<
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ffi.IntPtr Function(ffi.Pointer<ffi.Void>),
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int Function(ffi.Pointer<ffi.Void>)
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>('Dart_InitializeApiDL');
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final initializeResult = initializeApi(ffi.NativeApi.initializeApiDLData);
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if (initializeResult != 0) {
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throw StateError('failed to init API.');
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}
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// Create a new CMPedometer instance.
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client = pd.CMPedometer.new1(lib);
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// Setting the formatter for date strings.
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formatter = pd.NSDateFormatter.castFrom(
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pd.NSDateFormatter.alloc(lib).init(),
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);
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formatter.dateFormat = pd.NSString(lib, "${StepsRepo._formatString} zzz");
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hourFormatter = pd.NSDateFormatter.castFrom(
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pd.NSDateFormatter.alloc(lib).init(),
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);
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hourFormatter.dateFormat = pd.NSString(lib, "HH");
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}
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pd.NSDate dateConverter(DateTime dartDate) {
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// Format dart date to string.
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final formattedDate = DateFormat(StepsRepo._formatString).format(dartDate);
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// Get current timezone.
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// If eastern african change to AST to follow with NSDate.
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final tz = dartDate.timeZoneName == "EAT" ? "AST" : dartDate.timeZoneName;
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// Create a new NSString with the formatted date and timezone.
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final nString = pd.NSString(lib, "$formattedDate $tz");
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// Convert the NSString to NSDate.
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return formatter.dateFromString_(nString)!;
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}
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@override
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Future<List<Steps>> getSteps() async {
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if (!pd.CMPedometer.isStepCountingAvailable(lib)) {
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debugPrint("Step counting is not available.");
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return [];
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}
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final handlers = [];
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final futures = <Future<Steps?>>[];
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final now = DateTime.now();
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for (var h = 0; h <= now.hour; h++) {
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final start = dateConverter(DateTime(now.year, now.month, now.day, h));
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final end = dateConverter(DateTime(now.year, now.month, now.day, h + 1));
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final completer = Completer<Steps?>();
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futures.add(completer.future);
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final handler = helpLib.wrapCallback(
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pd.ObjCBlock_ffiVoid_CMPedometerData_NSError.listener(lib, (
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pd.CMPedometerData? result,
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pd.NSError? error,
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) {
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if (result != null) {
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final stepCount = result.numberOfSteps.intValue;
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final startHour =
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hourFormatter.stringFromDate_(result.startDate).toString();
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completer.complete(Steps(startHour, stepCount));
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} else {
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debugPrint("Query error: ${error?.localizedDescription}");
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completer.complete(null);
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}
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}),
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);
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handlers.add(handler);
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client.queryPedometerDataFromDate_toDate_withHandler_(
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start,
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end,
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handler,
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);
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}
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return (await futures.wait).nonNulls.toList();
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}
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}
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class _AndroidStepsRepo implements StepsRepo {
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late final hc.Activity activity;
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late final hc.Context applicationContext;
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late final hc.HealthConnectClient client;
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_AndroidStepsRepo() {
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// ignore: invalid_use_of_internal_member
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activity = hc.Activity.fromReference(jni.Jni.getCurrentActivity());
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applicationContext =
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// ignore: invalid_use_of_internal_member
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hc.Context.fromReference(jni.Jni.getCachedApplicationContext());
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client = hc.HealthConnectClient.getOrCreate$1(applicationContext);
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}
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@override
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Future<List<Steps>> getSteps() async {
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final futures = <Future<hc.AggregationResult>>[];
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final now = DateTime.now();
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for (var h = 0; h <= now.hour; h++) {
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final start =
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DateTime(now.year, now.month, now.day, h).millisecondsSinceEpoch;
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final end =
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DateTime(now.year, now.month, now.day, h + 1).millisecondsSinceEpoch;
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final request = hc.AggregateRequest(
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{
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hc.StepsRecord.COUNT_TOTAL,
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}.toJSet(hc.AggregateMetric.type(jni.JLong.type)),
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hc.TimeRangeFilter.between(
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hc.Instant.ofEpochMilli(start)!,
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hc.Instant.ofEpochMilli(end)!,
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),
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jni.JSet.hash(jni.JObject.type),
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);
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futures.add(client.aggregate(request));
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}
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final data = await Future.wait(futures);
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return data.asMap().entries.map((entry) {
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final stepsLong = entry.value.get(hc.StepsRecord.COUNT_TOTAL);
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final steps = stepsLong?.intValue() ?? 0;
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return Steps(entry.key.toString().padLeft(2, '0'), steps);
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}).toList();
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}
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}
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