deepvoice_client/local_plugins/ota/ios/Classes/OtaPlugin.swift

import Flutter

public class OtaPlugin: NSObject, FlutterPlugin {
  let userManager = JLBleManager.sharedInstance()

  public static func register(with registrar: FlutterPluginRegistrar) {
    let channel = FlutterMethodChannel(name: "ota", binaryMessenger: registrar.messenger())
    let instance = OtaPlugin()
    registrar.addMethodCallDelegate(instance, channel: channel)
  }

  public func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
    switch call.method {
    case "startUpgrading":
      startUpgrading()
      result("")
    case "onOtaClose":
      onOtaClose()
      result("")
    default:
      result(FlutterMethodNotImplemented)
    }
  }

  private func startUpgrading() {
    if userManager.mBleManagerState == CBManagerState.poweredOn {
      userManager.startScanBLE()
      DispatchQueue.main.asyncAfter(deadline: .now() + 2.0) {
        self.userManager.stopScanBLE()
      }
    }
  }

  private func onOtaClose() {}
}