iOS

@IBAction func createARoom(sender: AnyObject) {
    let connectOptions = ConnectOptions(token: accessToken) { (builder) in
        builder.roomName = "my-room"
    }
    room = TwilioVideoSDK.connect(options: connectOptions, delegate: self)
}

// MARK: RoomDelegate

func roomDidConnect(room: Room) {
    print("Did connect to Room")

    if let localParticipant = room.localParticipant {
        print("Local identity \(localParticipant.identity)")

        // Set the delegate of the local particiant to receive callbacks
        localParticipant.delegate = self
    }
}

// Create trtc instance(singleton)  and set up event listeners
self.trtcCloud = [TRTCCloud sharedInstance];
self.trtcCloud.delegate = self;

// Package the room entry parameter
// Please replace each field in TRTCParams with your own parameters
TRTCParams *params = [[TRTCParams alloc] init];
params.sdkAppId = 1400000123;  // Please replace with your own SDKAppID
params.roomId = 123321; // Please replace with your own room number
params.userId = @"denny";   // Please replace with your own userid  
params.userSig = @"xxx"; // Please replace with your own userSig
params.role = TRTCRoleAnchor;

// If your application scenario is a video call between several people, please use "TRTC_APP_SCENE_LIVE"
[self.trtcCloud enterRoom:params appScene:TRTCAppSceneLIVE];

// Listen to the onEnterRoom event of the SDK and get notification whether the room is successfully entered
- (void)onEnterRoom:(NSInteger)result {
    if (result > 0) {
        [self toastTip:@"Enter room succeed!"];
    } else {
        [self toastTip:@"Enter room failed!"];
    }
}

T// start camera
var cameraSource = CameraSource(delegate: self),
let captureDevice = CameraSource.captureDevice(position: .front) 

cameraSource.startCapture(device: captureDevice, completion: nil)

// Use CameraSource to produce video from the device's front camera.

if let camera = TVICameraCapturer(source: .frontCamera),
    let videoTrack = TVILocalVideoTrack(capturer: camera) {

    // TVIVideoView is a TVIVideoRenderer and can be added to any TVIVideoTrack.
    let renderer = TVIVideoView(frame: view.bounds)

    // Add renderer to the video track
    videoTrack.addRenderer(renderer)

    self.localVideoTrack = videoTrack
    self.camera = camera
    self.view.addSubview(renderer)
}

self.trtcCloud = [TRTCCloud sharedInstance];
// Set the preview mode of the local video image: Enable horizontal mirroring and set the fill mode for the video image
TRTCRenderParams *param = [[TRTCRenderParams alloc] init];
param.fillMode   = TRTCVideoFillMode_Fill;
param.mirrorType = TRTCVideoMirrorTypeAuto;
[self.trtcCloud setLocalRenderParams:param];

// Enable local camera preview(`localCameraVideoView` is used to render the local video image)
[self.trtcCloud startLocalPreview:YES view:localCameraVideoView];

// Enable mic and set `quality` to `SPEECH` for the voice mode
[self.trtcCloud startLocalAudio:TRTCAudioQualitySpeech];

[self.trtcCloud startLocalAudio:TRTCAudioQualitySpeech];

// MARK: RemoteParticipantDelegate

/*
 * In the Participant Delegate, we can respond when the Participant adds a Video
 * Track by rendering it on screen.
 */
func didSubscribeToVideoTrack(videoTrack: RemoteVideoTrack,
                              publication: RemoteVideoTrackPublication,
                              participant: RemoteParticipant) {

    if let remoteView = VideoView.init(frame: self.view.bounds,
                                       delegate:self) {

        videoTrack.addRenderer(remoteView)
        self.view.addSubview(remoteView)
        self.remoteView = remoteView
    }
}

// MARK: VideoViewDelegate

// Lastly, we can subscribe to important events on the VideoView
func videoViewDimensionsDidChange(view: VideoView, dimensions: CMVideoDimensions) {
    self.view.setNeedsLayout()
}

self.trtcCloud = [TRTCCloud sharedInstance];
// Play back the camera (primary stream) image of `denny`
[self.trtcCloud startRemoteView:@"denny" streamType:TRTCVideoStreamTypeBig view:cameraView];

//TodisconnectfromaRoom,wecall:
room?.disconnect()

//ThisresultsinacallbacktoRoomDelegate#roomDidDisconnect(room:Room,error:Error?)

//MARK:RoomDelegate

funcroomDidDisconnect(room:Room,error:Error?){
print("Disconnectedfromroom\(room.name)")
}

self.trtcCloud = [TRTCCloud sharedInstance];
// Exit the current room
[self.trtcCloud exitRoom];

// Listen the `onExitRoom` callback to get notification
- (void)onExitRoom:(NSInteger)reason {
    if (reason == 0) {
        NSLog(@"Exit current room by calling the 'exitRoom' api of sdk ...");
    } else if (reason == 1) {
        NSLog(@"Kicked out of the current room by server through the restful api...");
    } else if (reason == 2) {
        NSLog(@"Current room is dissolved by server through the restful api...");
    }
}