flutter-sport/lib/widgets/dialog/search_device.dart

import 'dart:async';
import 'dart:io';
import 'dart:math';
import 'dart:typed_data';

import 'package:android_intent/android_intent.dart';
import 'package:broadcast/broadcast.dart';
import 'package:device_info/device_info.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter/scheduler.dart';
import 'package:flutter_reactive_ble/flutter_reactive_ble.dart';
import 'package:get_it/get_it.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:sport/application.dart';
import 'package:sport/db/bluetooth_db.dart';
import 'package:sport/provider/bluetooth.dart';
import 'package:sport/utils/toast.dart';
import 'package:sport/widgets/appbar.dart';
import 'package:sport/widgets/button_cancel.dart';
import 'package:sport/widgets/button_primary.dart';
import 'package:sport/widgets/dialog/alert_dialog.dart';
import 'package:sport/widgets/dialog/request_dialog.dart';
import 'package:sport/widgets/dialog/search_device_connect.dart';
import 'package:sport/widgets/image.dart';
import 'package:sport/widgets/misc.dart';
import 'package:umeng_common_sdk/umeng_common_sdk.dart';
import 'package:url_launcher/url_launcher.dart';

openSearchDeviceDialog(BuildContext context) async {
  if (Platform.isAndroid) {
    DeviceInfoPlugin deviceInfo = DeviceInfoPlugin();
    AndroidDeviceInfo info = await deviceInfo.androidInfo;

    if (info.version.sdkInt < 31) {
      final isLocationEnabled = await Broadcast.isLocationEnabled();
      if (!isLocationEnabled) {
        if (await showDialog(
              context: context,
              builder: (context) => CustomAlertDialog(
                title: '打开定位信息服务才能正常连接蓝牙设备',
                ok: () => Navigator.of(context).pop(true),
                textOk: "去打开",
              ),
            ) ==
            true) {
          await Broadcast.openSetting();
        }
        return;
      }

      PermissionStatus permissions = await Permission.locationWhenInUse.request();

      if (permissions.isGranted) {
        showDialog(context: context, barrierDismissible: false, builder: (_) => SearchDeviceDialog());
      } else {
        if (await showDialog(
              context: context,
              builder: (context) => CustomAlertDialog(title: '使用蓝牙功能需授权定位权限', ok: () => Navigator.of(context).pop(true)),
            ) ==
            true) {
          openAppSettings();
        } else {
          ToastUtil.show('使用蓝牙设备需要授权定位权限!');
        }
        return false;
      }
    } else {
      Map<Permission, PermissionStatus> statuses = await [
        Permission.bluetoothScan,
        Permission.bluetoothConnect,
      ].request();
      if (statuses.isNotEmpty == true && statuses.values.every((element) => element.isGranted)) {
        showDialog(context: context, barrierDismissible: false, builder: (_) => SearchDeviceDialog());
      } else {
        if (await showDialog(
              context: context,
              builder: (context) => CustomAlertDialog(title: '使用蓝牙功相应的系统权限', ok: () => Navigator.of(context).pop(true)),
            ) ==
            true) {
          openAppSettings();
        } else {
          ToastUtil.show('使用蓝牙设备需要蓝牙搜索权限和连接权限!');
        }
        return false;
      }
    }
  } else if (Platform.isIOS) {
    showDialog(context: context, barrierDismissible: false, builder: (_) => SearchDeviceDialog());
  }

  return true;
}

class SearchDeviceDialog extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    double height = MediaQuery.of(context).size.height / 5 * 3;
    return Dialog(
      elevation: 0,
      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(10)),
      child: Padding(
          padding: const EdgeInsets.symmetric(horizontal: 12.0, vertical: 12.0),
          child: ConstrainedBox(
            constraints: BoxConstraints(minHeight: height, minWidth: double.infinity, maxHeight: height),
            child: Column(
              mainAxisSize: MainAxisSize.min,
              children: <Widget>[
                Stack(
                  alignment: Alignment.center,
                  children: <Widget>[
                    Center(
                      child: Padding(
                        padding: const EdgeInsets.all(6.0),
                        child: Text("请选择鞋子", style: Theme.of(context).textTheme.headline3),
                      ),
                    ),
                    Positioned(
                      right: 0,
                      top: 0,
                      child: GestureDetector(
                        behavior: HitTestBehavior.opaque,
                        onTap: () => Navigator.pop(context),
                        child: Padding(
                          padding: const EdgeInsets.all(6.0),
                          child: Image.asset("lib/assets/img/btn_close_big.png"),
                        ),
                      ),
                    ),
                  ],
                ),
                Expanded(
                  child: StreamBuilder<BleStatus>(
                      stream: FlutterReactiveBle().statusStream,
                      initialData: BleStatus.unknown,
                      builder: (c, snapshot) {
                        final state = snapshot.data ?? BleStatus.unknown;
                        if (state == BleStatus.ready) {
                          return FindDevicesScreen();
                        } else if (state == BleStatus.poweredOff) {
                          return BluetoothOffScreen(state: state);
                        }
                        return Container(
                          child: Center(child: SizedBox(
                              width: 100,
                              height: 100,
                              child: CircularProgressIndicator(
                              )),),
                        );
                      }),
                ),
              ],
            ),
          )),
    );
  }
}

class BluetoothOffScreen extends StatelessWidget {
  final BleStatus state;

  const BluetoothOffScreen({Key? key, required this.state}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Column(
      mainAxisSize: MainAxisSize.min,
      children: <Widget>[
        SizedBox(
          height: 20,
        ),
        Image.asset("lib/assets/img/pop_icon_bluetooth.png"),
        SizedBox(
          height: 20,
        ),
        Text(
          '蓝牙未开启',
          style: Theme.of(context).textTheme.bodyText2!,
        ),
        SizedBox(
          height: 10,
        ),
        GestureDetector(
          behavior: HitTestBehavior.opaque,
          onTap: () async {
            if (Platform.isAndroid) {
              AndroidIntent intent = AndroidIntent(action: "android.bluetooth.adapter.action.REQUEST_ENABLE");
              await intent.launch();
            } else if (Platform.isIOS) {
              launch("App-Prefs:root=Bluetooth");
            }
          },
          child: Center(
            child: Row(
              mainAxisSize: MainAxisSize.min,
              children: <Widget>[
                Text(
                  '打开蓝牙设置',
                  style: Theme.of(context).textTheme.bodyText2!.copyWith(color: Theme.of(context).accentColor),
                ),
                SizedBox(
                  width: 6,
                ),
                arrowRight6()
              ],
            ),
          ),
        ),
        Divider(
          height: 32,
        ),
        Text(
          '下窗弹窗点击如图所示位置',
          style: Theme.of(context).textTheme.subtitle2,
        ),
        Container(
          padding: EdgeInsets.fromLTRB(25.0, 7, 25.0, 16.0),
          child: Platform.isAndroid ? Image.asset("lib/assets/img/pop_img_bluetooth_android.png") : Image.asset("lib/assets/img/pop_img_bluetooth_ios.png"),
        ),
      ],
    );
  }
}

class FindDevicesScreen extends StatefulWidget {
  @override
  State<StatefulWidget> createState() => _FindDevicesScreen();
}

class _FindDevicesScreen extends State<FindDevicesScreen> with SingleTickerProviderStateMixin {
  late AnimationController _animationController;
  late Animation<double> _animation;
  bool _search = true;
  bool _error = false;
  int _time = 0;
  int _timeout = 10;

  List<DiscoveredDevice> scanResults = <DiscoveredDevice>[];
  late Bluetooth bluetooth;
  Map<String, Map<String, dynamic>> history = {};

  Timer? timer;
  late FlutterReactiveBle flutterReactiveBle;
  StreamSubscription? scanForDevices;

  @override
  void initState() {
    super.initState();
    bluetooth = GetIt.I<Bluetooth>();
    flutterReactiveBle = FlutterReactiveBle();

    _animationController = AnimationController(duration: Duration(seconds: 2), vsync: this);
    _animation = Tween(begin: .0, end: 1.0).animate(_animationController)
      ..addStatusListener((status) {
        if (status == AnimationStatus.completed) {
          _animationController.repeat();
        }
      });
    //开始动画
    _animationController.forward();

    startScan();

    SchedulerBinding.instance?.addPostFrameCallback((timeStamp) {
      if (bluetooth.isRightError) bluetooth.disconnectDevice("打开搜索界面时右鞋状态异常");
    });
    UmengCommonSdk.onEvent("shoe_search", {});
  }

  @override
  void dispose() {
    scanForDevices?.cancel();
    _animationController.dispose();
    super.dispose();
  }

  startScan() {
    timer?.cancel();
    scanForDevices?.cancel();

    history.clear();
    BluetoothDB().find().then((value) {
      value.forEach((e) {
        history[e[BluetoothDB.C_ID]] = e;
      });
      setState(() {});
    });

    setState(() {
      _time = 0;
      scanResults = [];
      _search = true;
      _error = false;
    });

    timer = Timer.periodic(Duration(seconds: 1), (timer) {
      if (!mounted) return;
      int t = ++_time;
      if (t % 3 == 0) {
        _updateData();
      }
      if (_time >= 10) {
        scanForDevices?.cancel();
        scanForDevices = null;
        timer.cancel();
        _updateData();
      }
      setState(() {

      });
    });

    scanForDevices = flutterReactiveBle.scanForDevices(withServices: [Uuid.parse(BLE_UUID)], scanMode: ScanMode.lowPower).listen((e) {
      if (e.name.isEmpty) return;
      // if (e.id == bluetooth.deviceId) return;
      if (e.name.toUpperCase().startsWith("SH") || e.name.toUpperCase().startsWith("FUN")) {
        final knownDeviceIndex = scanResults.indexWhere((d) => d.id == e.id);
        if (knownDeviceIndex >= 0) {
          scanResults[knownDeviceIndex] = e;
        } else {
          scanResults.add(e);
        }
      }
    })
      ..onDone(() {});
  }

  _updateData() {
      _search = scanForDevices != null;
      scanResults.sort((a, b) {
        int r = (history[b.id]?[BluetoothDB.C_TIMES] ?? 0).compareTo(history[a.id]?[BluetoothDB.C_TIMES] ?? 0);
        return r == 0
            ? a.rssi.abs() > b.rssi.abs()
                ? 1
                : -1
            : r;
      });
  }

  @override
  Widget build(BuildContext context) {
    int maxRssi = scanResults.isEmpty ? 0 : scanResults.reduce((value, element) => value.rssi > element.rssi ? value : element).rssi;
    return Column(
      children: <Widget>[
        Expanded(
          child: RefreshIndicator(
            color: Theme.of(context).colorScheme.secondary,
            onRefresh: () async {
              if (!_search) startScan();
            },
            child: CustomScrollView(
              slivers: [
                SliverToBoxAdapter(
                  child: Column(
                    children: [
                      ValueListenableBuilder(
                        valueListenable: bluetooth.deviceNotifier,
                        builder: (BuildContext context, DiscoveredDevice? d, Widget? child) {
                          if (d == null) return Container();
                          return Column(
                            children: <Widget>[
                              Container(
                                margin: const EdgeInsets.symmetric(vertical: 12.0),
                                decoration: BoxDecoration(border: Border.all(color: Theme.of(context).accentColor), borderRadius: const BorderRadius.all(Radius.circular(10.0))),
                                child: ListTile(
                                  contentPadding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6.0),
                                  title: Row(
                                    children: <Widget>[
                                      (history.containsKey(d.id) && (history[d.id]?[BluetoothDB.C_MARK] as String?)?.isNotEmpty == true)
                                          ? Column(
                                              crossAxisAlignment: CrossAxisAlignment.start,
                                              children: [
                                                Text(
                                                  "${(history[d.id]?[BluetoothDB.C_MARK])}",
                                                  overflow: TextOverflow.ellipsis,
                                                  style: Theme.of(context).textTheme.subtitle1,
                                                ),
                                                Padding(
                                                  padding: const EdgeInsets.only(top: 4.0),
                                                  child: Text(
                                                    d.name,
                                                    overflow: TextOverflow.ellipsis,
                                                    style: Theme.of(context).textTheme.bodyText1,
                                                  ),
                                                ),
                                              ],
                                            )
                                          : Text(
                                              d.name,
                                              overflow: TextOverflow.ellipsis,
                                              style: Theme.of(context).textTheme.subtitle1,
                                            ),
                                      const SizedBox(
                                        height: 4,
                                      ),
                                    ],
                                  ),
                                  trailing: Padding(
                                    padding: const EdgeInsets.symmetric(vertical: 8.0),
                                    child: Row(
                                      mainAxisSize: MainAxisSize.min,
                                      children: <Widget>[
                                        Icon(
                                          Icons.link_off,
                                          color: Theme.of(context).accentColor,
                                        ),
                                        SizedBox(
                                          width: 4,
                                        ),
                                        Text(
                                          "断开连接",
                                          style: TextStyle(
                                            color: Theme.of(context).accentColor,
                                            fontSize: 12,
                                          ),
                                          strutStyle: fixedLine,
                                        )
                                      ],
                                    ),
                                  ),
                                  onTap: (){GetIt.I<Bluetooth>().clearDevice(deleteStep: true);},
                                ),
                              ),
                              SizedBox(
                                height: 16.0,
                              ),
                              Align(
                                alignment: Alignment.centerLeft,
                                child: Padding(
                                  padding: const EdgeInsets.symmetric(horizontal: 8.0),
                                  child: Text(
                                    "附近的设备",
                                    style: Theme.of(context).textTheme.bodyText1,
                                  ),
                                ),
                              ),
                            ],
                          );
                        },
                      ),
                      Divider(),
                    ],
                  ),
                ),
                for (var i = 0; i < scanResults.length; i++)
                  SliverPadding(
                    padding: const EdgeInsets.symmetric(horizontal: 8.0),
                    sliver: SliverToBoxAdapter(
                      child: Column(
                        children: <Widget>[
                          ListTile(
                            contentPadding: const EdgeInsets.symmetric(horizontal: 0),
                            title: Row(
                              children: [
                                (history.containsKey(scanResults[i].id) && (history[scanResults[i].id]?[BluetoothDB.C_MARK] as String?)?.isNotEmpty == true)
                                    ? Column(
                                        crossAxisAlignment: CrossAxisAlignment.start,
                                        children: [
                                          Text(
                                            "${(history[scanResults[i].id]?[BluetoothDB.C_MARK])}",
                                            overflow: TextOverflow.ellipsis,
                                            style: Theme.of(context).textTheme.subtitle1,
                                          ),
                                          Padding(
                                            padding: const EdgeInsets.only(top: 4.0),
                                            child: Text(
                                              scanResults[i].name,
                                              overflow: TextOverflow.ellipsis,
                                              style: Theme.of(context).textTheme.bodyText1,
                                            ),
                                          ),
                                        ],
                                      )
                                    : Text(
                                        scanResults[i].name,
                                        overflow: TextOverflow.ellipsis,
                                        style: Theme.of(context).textTheme.subtitle1,
                                      ),
                                const SizedBox(
                                  width: 10,
                                ),
                                Rssi(
                                  rssi: scanResults[i].rssi,
                                  index: maxRssi
                                ),
                                if (isDebugShoe)
                                  Text(
                                    "${scanResults[i].rssi}",
                                    style: Theme.of(context).textTheme.bodyText1?.copyWith(fontSize: 8),
                                  ),
                                if (history.containsKey(scanResults[i].id))
                                  history.keys.first == scanResults[i].id
                                      ? Container(
                                          margin: const EdgeInsets.symmetric(horizontal: 8),
                                          padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
                                          decoration: BoxDecoration(
                                              borderRadius: BorderRadius.circular(50),
                                              border: Border.all(
                                                color: Theme.of(context).accentColor,
                                                width: .5,
                                              )),
                                          child: Text(
                                            "最近使用",
                                            style: Theme.of(context).textTheme.bodyText1!.copyWith(fontSize: 8, color: Theme.of(context).accentColor),
                                          ),
                                        )
                                      : Container(
                                          margin: const EdgeInsets.symmetric(horizontal: 8),
                                          padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
                                          decoration: BoxDecoration(
                                              borderRadius: BorderRadius.circular(50),
                                              border: Border.all(
                                                color: const Color(0xff999999),
                                                width: .5,
                                              )),
                                          child: Text(
                                            "曾经使用",
                                            style: Theme.of(context).textTheme.bodyText1!.copyWith(fontSize: 8),
                                          ),
                                        ),
                              ],
                            ),
                            trailing: Container(
                              width: 64,
                              height: 30,
                              alignment: Alignment.center,
                              decoration: BoxDecoration(
                                  borderRadius: BorderRadius.all(Radius.circular(100)),
                                  border: Border.all(
                                    color: Theme.of(context).accentColor,
                                  )),
                              child: Text(
                                "连接",
                                style: Theme.of(context).textTheme.bodyText1?.copyWith(color: Theme.of(context).colorScheme.secondary),
                              ),
                            ),
                            onTap: () async{
                              UmengCommonSdk.onEvent("shoe_search_connect", {});
                              // await request(context, () async {
                              //   await scanForDevices?.cancel();
                              //   await GetIt.I<Bluetooth>().clearDevice(deleteStep: true);
                              //   await Future.delayed(Duration(seconds: 2));
                              //   return 1;
                              // });
                              await scanForDevices?.cancel();
                              await GetIt.I<Bluetooth>().clearDevice(deleteStep: true);

                              Navigator.pop(context);
                              await showDialog(context: context, barrierDismissible: false, builder: (_) => SearchDeviceConnectDialog(device: scanResults[i], alias: history[scanResults[i].id]?[BluetoothDB.C_MARK],));
                            },
                          ),
                          const Divider()
                        ],
                      ),
                    ),
                  ),
                if (_search && scanResults.isEmpty)
                  SliverFillRemaining(
                    child: Center(
                      child: Column(
                        mainAxisSize: MainAxisSize.min,
                        children: <Widget>[
                          Stack(
                            alignment: Alignment.center,
                            children: <Widget>[RotationTransition(turns: _animation, child: Image.asset("lib/assets/img/pop_image_circle.png")), Image.asset("lib/assets/img/pop_image_shoes.png")],
                          ),
                          SizedBox(
                            height: 12,
                          ),
                          Text("搜索中...")
                        ],
                      ),
                    ),
                  ),
                if (!_search && _error)
                  SliverFillRemaining(
                    child: Center(
                      child: Column(
                        mainAxisSize: MainAxisSize.min,
                        children: <Widget>[
                          Image.asset("lib/assets/img/pop_image_noequipment.png"),
                          SizedBox(
                            height: 10,
                          ),
                          Text("蓝牙搜索异常，请重新尝试")
                        ],
                      ),
                    ),
                  ),
                if (!_search && scanResults.isEmpty)
                  SliverFillRemaining(
                    child: Center(
                      child: Column(
                        mainAxisSize: MainAxisSize.min,
                        children: <Widget>[
                          Image.asset("lib/assets/img/pop_image_noequipment.png"),
                          SizedBox(
                            height: 10,
                          ),
                          Text("暂无设备")
                        ],
                      ),
                    ),
                  ),
              ],
            ),
          ),
        ),
        Padding(
          padding: const EdgeInsets.all(8.0),
          child: _search
              ? CancelButton(
                  height: 35,
                  content: "搜索中(${max(0, _timeout - _time)})...",
                  callback: () {
                    // FlutterBluePlus.instance.stopScan().then((value) {
                    //   setState(() {
                    //     _search = false;
                    //   });
                    // });
                  },
                )
              : PrimaryButton(height: 35, content: "重新搜索", callback: () => startScan()),
        ),
      ],
    );
  }
}

class DeviceScreen extends StatefulWidget {
  const DeviceScreen({Key? key, required this.device}) : super(key: key);

  final DiscoveredDevice device;

  @override
  State<StatefulWidget> createState() {
    return _DeviceScreenState();
  }
}

class _DeviceScreenState extends State<DeviceScreen> {
  late TextEditingController _textEditingController;

  @override
  void initState() {
    super.initState();
    _textEditingController = TextEditingController();
  }

  List<int> _getRandomBytes() {
    final math = Random();
    return [math.nextInt(255), math.nextInt(255), math.nextInt(255), math.nextInt(255)];
  }

  @override
  Widget build(BuildContext context) {
    DiscoveredDevice device = widget.device;
    final bluetooth = GetIt.I<Bluetooth>();
    return Scaffold(
      appBar: buildAppBar(
        context,
        title: device.name,
        actions: <Widget>[
          StreamBuilder<ConnectionStateUpdate>(
            stream: FlutterReactiveBle().connectedDeviceStream.where((event) => event.deviceId == device.id),
            initialData: ConnectionStateUpdate(
              deviceId: device.id,
              connectionState: DeviceConnectionState.disconnected,
              failure: null,
            ),
            builder: (c, snapshot) {
              VoidCallback? onPressed;
              String text;
              switch (snapshot.data?.connectionState) {
                case DeviceConnectionState.connected:
                  onPressed = () => FlutterReactiveBle().connectToDevice(id: device.id);
                  text = 'DISCONNECT';
                  break;
                case DeviceConnectionState.disconnected:
                  onPressed = () => FlutterReactiveBle().clearGattCache(device.id);
                  text = 'CONNECT';
                  break;
                default:
                  text = snapshot.data.toString().substring(21).toUpperCase();
                  break;
              }
              return FlatButton(
                  onPressed: onPressed,
                  child: Text(
                    text,
                    style: Theme.of(context).primaryTextTheme.button!.copyWith(color: Colors.white),
                  ));
            },
          )
        ],
      ),
      body: SingleChildScrollView(
        child: Column(
          children: <Widget>[
            Row(
              mainAxisAlignment: MainAxisAlignment.spaceAround,
              children: [
                ValueListenableBuilder(
                  valueListenable: bluetooth.deviceReadNotifier,
                  builder: (BuildContext context, bool value, Widget? child) => Container(
                      width: 50,
                      height: 50,
                      color: value ? Colors.green : Colors.red,
                      child: Center(
                          child: Text(
                        "读",
                        style: TextStyle(color: Colors.white),
                      ))),
                ),
                ValueListenableBuilder(
                  valueListenable: bluetooth.deviceWriteNotifier,
                  builder: (BuildContext context, bool value, Widget? child) => Container(width: 50, height: 50, color: value ? Colors.green : Colors.red, child: Center(child: Text("写", style: TextStyle(color: Colors.white)))),
                ),
                ValueListenableBuilder(
                  valueListenable: bluetooth.deviceReadNotifyNotifier,
                  builder: (BuildContext context, bool value, Widget? child) => Container(width: 50, height: 50, color: value ? Colors.green : Colors.red, child: Center(child: Text("通知", style: TextStyle(color: Colors.white)))),
                ),
              ],
            ),
            Padding(
              padding: const EdgeInsets.all(16.0),
              child: Row(
                children: [
                  Expanded(
                      child: CupertinoTextField(
                    cursorColor: const Color(0xffFFC400),
                    controller: _textEditingController,
                  )),
                  SizedBox(
                    width: 10,
                  ),
                  RaisedButton(
                      onPressed: () {
                        var data = _textEditingController.value.text;
                        if (data.isEmpty) return;
                        List<int> list = data.split(" ").where((element) => element.isNotEmpty).map((e) => int.parse(e, radix: 16)).toList();
                        print("test write $list --> ${Uint8List.fromList(list)}");
                        bluetooth.writeUintList(Uint8List.fromList(list));
                      },
                      child: Text("发送"))
                ],
              ),
            ),
            Row(
              children: [
                RaisedButton(
                  onPressed: () {
                    bluetooth.queryDeviceStep(test: true);
                  },
                  child: Text("同步步数"),
                ),
                ValueListenableBuilder(
                  valueListenable: GetIt.I<Bluetooth>().stepTotalNotifier,
                  builder: (BuildContext context, int value, Widget? child) {
                    if (value < 0) {
                      return CircularProgressIndicator();
                    }
                    return Text(" 获得步数: $value");
                  },
                ),
              ],
            ),
            RaisedButton(
              onPressed: () {
                bluetooth.resetData();
              },
              child: Text("清零"),
            ),
            RaisedButton(
              onPressed: () {
                bluetooth.setupGameMode(true);
              },
              child: Text("游戏模式开"),
            ),
            RaisedButton(
              onPressed: () {
                bluetooth.setupGameMode(false);
              },
              child: Text("游戏模式关"),
            ),
            RaisedButton(
              onPressed: () async {
                bluetooth.vibrate(GetIt.I<Bluetooth>().vibrateNotifier.value);
              },
              child: Text("发送震动"),
            ),
            ValueListenableBuilder(
              valueListenable: GetIt.I<Bluetooth>().vibrateNotifier,
              builder: (BuildContext context, int v, Widget? child) => Row(
                children: <Widget>[
                  Slider(
                    divisions: 9,
                    value: v.toDouble(),
                    min: 100,
                    max: 1000,
                    onChanged: (double value) {
                      bluetooth.vibrateNotifier.value = value.toInt();
                    },
                  ),
                  Text("$v")
                ],
              ),
            ),
            ValueListenableBuilder(
              valueListenable: GetIt.I<Bluetooth>().actionNotifier,
              builder: (BuildContext context, int value, Widget? child) => Text("当前动作: $value"),
            ),
            ValueListenableBuilder(
              valueListenable: GetIt.I<Bluetooth>().stepTotalNotifier,
              builder: (BuildContext context, int value, Widget? child) => Text("同步步数: $value"),
            ),
            ValueListenableBuilder(
              valueListenable: GetIt.I<Bluetooth>().stepNotifier,
              builder: (BuildContext context, int value, Widget? child) => Text("相对步数: $value"),
            ),
            ValueListenableBuilder(
              valueListenable: GetIt.I<Bluetooth>().byteNotifier,
              builder: (BuildContext context, List<int> value, Widget? child) => ConstrainedBox(
                constraints: BoxConstraints(minHeight: 200),
                child: Text(
                  "接收: $value",
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }
}

class Rssi extends StatelessWidget {
  final int rssi;
  final int index;

  const Rssi({Key? key, this.rssi = 0, this.index = 0}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    int r = this.rssi.abs();
    int total = 4;
    int level = 1;
    if(r == index.abs()){
      level = 4;
    } else if(r <= 60){
      level = 3;
    }else if(r <= 80){
      level = 2;
    }
    double height = 12;
    return Container(
      height: height,
      child: Row(crossAxisAlignment: CrossAxisAlignment.end, children: [
        for (var i = 0; i < total; i++)
          Container(
            width: 3,
            margin: EdgeInsets.only(right: 2),
            height: height - (total - i - 1) * 2,
            decoration: BoxDecoration(color: level > i ? Theme.of(context).colorScheme.secondary : const Color(0xffdcdcdc), borderRadius: BorderRadius.circular(3)),
          ),
      ]),
    );
  }
}