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@ -1,3 +1,6 @@
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import 'dart:async';
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import 'dart:io' show Platform;
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import 'package:flutter/material.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter_blue_plus/flutter_blue_plus.dart';
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import 'package:flutter_blue_plus/flutter_blue_plus.dart';
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import 'package:provider/provider.dart';
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import 'package:provider/provider.dart';
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@ -18,6 +21,8 @@ class ScannerScreen extends StatefulWidget {
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class _ScannerScreenState extends State<ScannerScreen> {
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class _ScannerScreenState extends State<ScannerScreen> {
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bool _changedNavigation = false;
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bool _changedNavigation = false;
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late final VoidCallback _connectionListener;
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late final VoidCallback _connectionListener;
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BluetoothAdapterState _bluetoothState = BluetoothAdapterState.unknown;
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late StreamSubscription<BluetoothAdapterState> _bluetoothStateSubscription;
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@override
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@override
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void initState() {
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void initState() {
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@ -39,12 +44,25 @@ class _ScannerScreenState extends State<ScannerScreen> {
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};
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};
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connector.addListener(_connectionListener);
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connector.addListener(_connectionListener);
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_bluetoothStateSubscription = FlutterBluePlus.adapterState.listen((state) {
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if (mounted) {
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setState(() {
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_bluetoothState = state;
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});
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// Cancel scan if Bluetooth turns off while scanning
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if (state != BluetoothAdapterState.on) {
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unawaited(connector.stopScan());
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}
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}
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});
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}
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}
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@override
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@override
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void dispose() {
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void dispose() {
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final connector = Provider.of<MeshCoreConnector>(context, listen: false);
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final connector = Provider.of<MeshCoreConnector>(context, listen: false);
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connector.removeListener(_connectionListener);
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connector.removeListener(_connectionListener);
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unawaited(_bluetoothStateSubscription.cancel());
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super.dispose();
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super.dispose();
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}
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}
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@ -62,6 +80,10 @@ class _ScannerScreenState extends State<ScannerScreen> {
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builder: (context, connector, child) {
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builder: (context, connector, child) {
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return Column(
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return Column(
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children: [
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children: [
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// Bluetooth off warning
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if (_bluetoothState == BluetoothAdapterState.off)
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_bluetoothOffWarning(context),
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// Status bar
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// Status bar
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_buildStatusBar(context, connector),
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_buildStatusBar(context, connector),
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@ -76,15 +98,18 @@ class _ScannerScreenState extends State<ScannerScreen> {
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builder: (context, connector, child) {
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builder: (context, connector, child) {
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final isScanning =
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final isScanning =
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connector.state == MeshCoreConnectionState.scanning;
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connector.state == MeshCoreConnectionState.scanning;
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final isBluetoothOff = _bluetoothState == BluetoothAdapterState.off;
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return FloatingActionButton.extended(
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return FloatingActionButton.extended(
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onPressed: () {
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onPressed: isBluetoothOff
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if (isScanning) {
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? null
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connector.stopScan();
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: () {
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} else {
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if (isScanning) {
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connector.startScan();
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connector.stopScan();
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}
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} else {
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},
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connector.startScan();
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}
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},
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icon: isScanning
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icon: isScanning
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? const SizedBox(
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? const SizedBox(
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width: 20,
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width: 20,
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@ -205,4 +230,47 @@ class _ScannerScreenState extends State<ScannerScreen> {
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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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Widget _bluetoothOffWarning(BuildContext context) {
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final errorColor = Theme.of(context).colorScheme.error;
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return Container(
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width: double.infinity,
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padding: const EdgeInsets.symmetric(vertical: 12, horizontal: 16),
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color: errorColor.withValues(alpha: 0.15),
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child: Row(
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children: [
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Icon(Icons.bluetooth_disabled, size: 24, color: errorColor),
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const SizedBox(width: 12),
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Expanded(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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context.l10n.scanner_bluetoothOff,
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style: TextStyle(
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color: errorColor,
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fontWeight: FontWeight.w600,
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fontSize: 14,
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),
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),
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const SizedBox(height: 4),
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Text(
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context.l10n.scanner_bluetoothOffMessage,
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style: TextStyle(
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color: errorColor.withValues(alpha: 0.85),
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fontSize: 12,
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),
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),
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],
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),
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),
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if (Platform.isAndroid)
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TextButton(
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onPressed: () => FlutterBluePlus.turnOn(),
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child: Text(context.l10n.scanner_enableBluetooth),
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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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zjs81
5 months ago
committed by
GitHub