TwilioVideoTutorialView.kt

import android.content.Context
import android.util.Log
import android.view.View
import android.widget.FrameLayout
import com.twilio.video.*
import io.flutter.plugin.common.BinaryMessenger
import io.flutter.plugin.common.MethodCall
import io.flutter.plugin.common.MethodChannel
import io.flutter.plugin.common.MethodChannel.MethodCallHandler
import io.flutter.plugin.common.MethodChannel.Result
import io.flutter.plugin.platform.PlatformView


/**
 * A *Twilio Video View*, used to connect to a twilio video call and render the view to the flutter interface
 * @property context the context of the view
 * @param twilioVideoTutorialPlugin the instance of the Twilio Video Plugin used to communicate through the event channel.
 * @param messenger the registrar messenger used to register the method channel.
 */
class TwilioVideoTutorialView internal constructor(private var context: Context, twilioVideoTutorialPlugin: TwilioVideoTutorialPlugin, messenger: BinaryMessenger) : PlatformView, MethodCallHandler {
  private val methodChannel: MethodChannel = MethodChannel(messenger, "twilioVideoPlugin")
  // Initialize the cameraCapturer and default it to the front camera
  private val cameraCapturer: CameraCapturer = CameraCapturer(context, CameraCapturer.CameraSource.FRONT_CAMERA)
  // Create a local video track with the camera capturer
  private val localVideoTrack: LocalVideoTrack = LocalVideoTrack.create(context, true, cameraCapturer)!!
  // The local participant connebangcted to the room
  var localParticipant: LocalParticipant? = null
  // The twilio room set up for the call
  private var room: Room? = null
  var roomName: String? = null
  // The twilio token passed through the method channel
  private var token: String? = null
  private val primaryVideoView: VideoView = VideoView(context)
  // Create the parent view, this will be used for the primary and future thumbnail video views
  private val view: FrameLayout = FrameLayout(context)

  // The tag for any logging
  val TAG = "TwilioVideoTutorial"

  // Override the platform view getView function and return the parent view
  override fun getView(): View {
    return view
  }

  init {
    // Initialize the method channel
    methodChannel.setMethodCallHandler(this)
    }

  /**
   * This listens to all the events that happen within the room and makes appropriate responses.
   */
  private val roomListener = object : Room.Listener {
    override fun onConnected(room: Room) {
      localParticipant = room.localParticipant
      roomName = room.name
    }

    override fun onReconnected(room: Room) {
      Log.i("Reconnected", "Participant: $localParticipant")
    }

    override fun onReconnecting(room: Room, twilioException: TwilioException) {
      // Send a message to the flutter ui to be displayed regarding this action
      Log.i("Reconnecting", "Participant: $localParticipant")
    }

    override fun onConnectFailure(room: Room, twilioException: TwilioException) {
      Log.e("Connection Failure Room", room.name)
      // Retry initializing the call
      init(token!!)
    }

    override fun onDisconnected(room: Room, twilioException: TwilioException?) {
      if (twilioException != null) {
        throw error("Twilio error on disconnect for room $roomName: ${twilioException.message}")
      }
      localParticipant = null
      Log.i("Disconnected", "room: $roomName")
      // Re init ui if not destroyed
    }

    override fun onParticipantConnected(room: Room, remoteParticipant: RemoteParticipant) {
      Log.i(
          TAG, "Participant connected")
      // Send a message to the flutter ui to be displayed regarding this action
      Log.i("Participant connected", "Participant: $remoteParticipant")
    }

    override fun onParticipantDisconnected(room: Room, remoteParticipant: RemoteParticipant) {
      // Create function to remove the remote participant properly
      Log.i("Participant disconnect", remoteParticipant.identity)
    }

    override fun onRecordingStarted(room: Room) {
      /** Will not be being implemented */
    }

    override fun onRecordingStopped(room: Room) {
      /** This will not be being implemented */
    }
  }
  /**
   * This is where the calls from flutter will be intercepted
   */
  override fun onMethodCall(methodCall: MethodCall, result: Result) {
    when (methodCall.method) {
      "init" -> {
        try {
          val callOptions: Map<*, *>? = methodCall.arguments as? Map<*, *>
          token = callOptions?.get("token") as String
          init(token!!)
        } catch (exception: Exception) {
          result.error("Twilio Initiation Error: ", "${exception.message}", exception.stackTrace)
        }
      }
      "hangup" -> hangup(result)
      else -> result.notImplemented()
    }
  }

  /**
   * Init the necessary video rendering
   */
  private fun init(token: String) {
    try {
      val connectOptions = ConnectOptions.Builder(token)
      localVideoTrack.let { connectOptions.videoTracks(listOf(it)) }

      room = Video.connect(context, connectOptions.build(), roomListener)
      localVideoTrack.addRenderer(primaryVideoView)
      primaryVideoView.mirror = true
      view.addView(primaryVideoView)
    } catch (exception: Exception) {
      Log.e("Initiation exception", "${exception.message}")
    }
  }


  /**
   * Disconnect from room
   */
  private fun hangup(result: Result) {
    room?.disconnect()
    localVideoTrack.release()
    result.success(true)
  }

  override fun dispose() {}
}

Where we have to add this file in android?

Where we have to add this file in android?

Bro have you got the answer