使用flutter设计一个蓝牙控制界面，进入页面后，自动搜索显示蓝牙设备列表，搜搜索进度显示，有控制按钮，有通讯功能，支持空安全，请列出代码和依赖控件

好的，下面是一个简单的蓝牙控制界面的Flutter代码，包含了搜索蓝牙设备、连接设备、发送数据等功能。

依赖控件：
- flutter_blue: ^0.8.1
- cupertino_icons: ^1.0.2

import 'package:flutter/material.dart';
import 'package:flutter_blue/flutter_blue.dart';

class BluetoothControlPage extends StatefulWidget {
  @override
  _BluetoothControlPageState createState() => _BluetoothControlPageState();
}

class _BluetoothControlPageState extends State<BluetoothControlPage> {
  FlutterBlue flutterBlue = FlutterBlue.instance;
  List<BluetoothDevice> devicesList = [];
  BluetoothDevice? selectedDevice;
  BluetoothCharacteristic? characteristic;

  bool isScanning = false;
  bool isConnected = false;
  bool isConnecting = false;

  TextEditingController textEditingController = TextEditingController();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("Bluetooth Control"),
      ),
      body: Column(
        children: [
          SizedBox(height: 16),
          ElevatedButton(
            onPressed: isScanning ? null : startScan,
            child: Text(isScanning ? "Scanning..." : "Start Scan"),
          ),
          SizedBox(height: 16),
          Expanded(
            child: ListView.builder(
              itemCount: devicesList.length,
              itemBuilder: (BuildContext context, int index) {
                BluetoothDevice device = devicesList[index];
                return ListTile(
                  title: Text(device.name),
                  subtitle: Text(device.id.toString()),
                  trailing: selectedDevice == device
                      ? Icon(Icons.check, color: Colors.green)
                      : null,
                  onTap: () => selectDevice(device),
                );
              },
            ),
          ),
          SizedBox(height: 16),
          isConnected
              ? Column(
                  children: [
                    Text("Connected to ${selectedDevice?.name ?? ""}"),
                    SizedBox(height: 16),
                    TextField(
                      controller: textEditingController,
                      decoration: InputDecoration(
                        border: OutlineInputBorder(),
                        labelText: "Send Data",
                      ),
                    ),
                    SizedBox(height: 16),
                    ElevatedButton(
                      onPressed: send,
                      child: Text("Send"),
                    ),
                  ],
                )
              : SizedBox(),
        ],
      ),
    );
  }

  void startScan() {
    setState(() {
      isScanning = true;
    });
    flutterBlue.scan().listen((scanResult) {
      if (!devicesList.contains(scanResult.device)) {
        setState(() {
          devicesList.add(scanResult.device);
        });
      }
    }).onDone(() {
      setState(() {
        isScanning = false;
      });
    });
  }

  void selectDevice(BluetoothDevice device) async {
    setState(() {
      isConnecting = true;
    });
    await device.connect();
    List<BluetoothService> services = await device.discoverServices();
    for (BluetoothService service in services) {
      for (BluetoothCharacteristic characteristic in service.characteristics) {
        if (characteristic.properties.read &&
            characteristic.properties.write &&
            characteristic.properties.notify) {
          setState(() {
            this.selectedDevice = device;
            this.characteristic = characteristic;
            this.isConnected = true;
            this.isConnecting = false;
          });
          characteristic.value.listen((value) {
            print("Received: ${String.fromCharCodes(value)}");
          });
          break;
        }
      }
      if (characteristic != null) {
        break;
      }
    }
  }

  void send() {
    String data = textEditingController.text;
    if (characteristic != null && data.isNotEmpty) {
      characteristic!.write(data.codeUnits);
    }
  }
}

上面依赖控件中，`flutter_blue`用于蓝牙的操作，`cupertino_icons`用于展示iOS风格的图标。请在`pubspec.yaml`文件中添加以下依赖：

dependencies:
  flutter_blue: ^0.8.1
  cupertino_icons: ^1.0.2