IOS 技术分享| ARCall 视频通话重构

    func initializeUI() {        self.navigationItem.leftBarButtonItem = createBarButtonItem(title: "", image: "icon_return_w")        calleeIdLabel.text = "您的呼叫ID：\(localUid)"                let setupButton = UIButton(type: .custom)        setupButton.setImage(UIImage(named: "icon_set"), for: .normal)        setupButton.frame = CGRect.init(x: 0, y: 0, width: 40, height: 40)        setupButton.addTarget(self, action: #selector(setup), for: .touchUpInside)        self.navigationItem.rightBarButtonItem = UIBarButtonItem(customView: setupButton)                if callWay == .single {            self.title = "点对点呼叫邀请"            mainCollectionView.removeFromSuperview()        } else {            self.title = "多人呼叫邀请"            titleLabel.text = "请输入对方的ID，可输入多个"        }                for objc in stackView.subviews {            let button = objc as? UIButton            button?.addTarget(self, action: #selector(didClickTextField), for: .touchUpInside)        }                self.view.addSubview(calleeIdTextField)        mainCollectionView.collectionViewLayout = flowLayout    }        @objc func didClickTextField() {        calleeIdTextField.becomeFirstResponder()    }        @objc func limitTextField() {                if calleeIdTextField.text?.count ?? 0 > 4 {            calleeIdTextField.text = String((calleeIdTextField.text?.prefix(4))!)        }        let calleeId = calleeIdTextField.text                let arr = stringToArr(str: calleeId)        for index in 0...3 {            var text = ""            (index < arr.count) ? (text = String(arr[index])) : nil            let button: UIButton = stackView.subviews[index] as! UIButton            button.setTitle(text, for: .normal)        }                if callWay == .single {            // 点对点呼叫            callButton.isEnabled = (calleeId?.count == 4)            callButton.isEnabled ? (callButton.setTitleColor(UIColor(hexString: "#40A3FB"), for: .normal)) : (callButton.setTitleColor(UIColor.lightGray, for: .normal))        } else {            // 多人呼叫            if calleeIdArr.count < 6 {                if calleeId?.count == 4 {                    if calleeIdArr.contains(calleeId!) == false {                        calleeIdArr.append(calleeId!)                        calleeIdTextField.text = ""                        if mainCollectionView.isHidden {                            mainCollectionView.isHidden = false                            changeConstraint(exist: true)                        }                        mainCollectionView.reloadData()                        callButton.isEnabled = true                        callButton.setTitleColor(UIColor(hexString: "#40A3FB"), for: .normal)                                                for index in 0...3 {                            let button: UIButton = stackView.subviews[index] as! UIButton                            button.setTitle("", for: .normal)                        }                    } else {                        showToast(text: "当前ID已存在，请重新输入", image: "icon_warning")                    }                }            }        }    }

    private func acceptCallInvitation() {        // 接受呼叫邀请        if infoModel.callMode == .video {            view.insertSubview(remoteVideo, belowSubview: calledView)            view.insertSubview(localVideo, belowSubview: calledView)                        setVideoEncoderConfiguration()            let videoCanvas = ARtcVideoCanvas()            videoCanvas.view = localVideo.renderView            view.insertSubview(localVideo, belowSubview: calledView)            rtcKit.setupLocalVideo(videoCanvas)        }    }        private func acceptedInvitation(callMode: CallMode) {        // 对方已同意呼叫        if !isCallSucess {            callStateLabel.text = "接听中..."            playCallBell(isOpen: false)            isCallSucess.toggle()            selectCallMode(mode: callMode)            infoModel.callMode = callMode            acceptCallInvitation()            rtcKit.setClientRole(.broadcaster)                        // 兼容异常问题            leaveReason = .drop            dealWithException(time: 10)        }    }        private func switchAudioMode() {        // 切换音频呼叫        windowStatus = .audio        infoModel.callMode = .audio        selectCallMode(mode: .audio)        localVideo.removeFromSuperview()        remoteVideo.removeFromSuperview()                rtcKit.disableVideo()    }        private func selectCallMode(mode: CallMode) {        // 选择呼叫模式        calledView.isHidden = false        callingView.isHidden = true        hangupButton.isHidden = false                let isHidden = (mode == .video)        backView.isHidden = isHidden        switchAudioButton.isHidden = !isHidden        switchCameraButton.isHidden = !isHidden        audioButton.isHidden = isHidden        speakerButton.isHidden = isHidden    }

    private func initializeEngine() {        // init ARtcEngineKit        rtcKit = ARtcEngineKit.sharedEngine(withAppId: AppID, delegate: self)        rtcKit.setChannelProfile(.liveBroadcasting)                switchAINoise()    }        private func joinChannel() {        rtcKit.joinChannel(byToken: nil, channelId: infoModel.channelId, uid: UserDefaults.string(forKey: .uid)) { (channel, uid, elapsed) in            print("joinChannel sucess")        }    }        @objc func switchAINoise() {        // AI 降噪        let dic = ["Cmd": "SetAudioAiNoise", "Enable": Default.bool(forKey: "noise") ? 1: 0] as [String : Any]        rtcKit.setParameters(getJSONStringFromDictionary(dictionary: dic as NSDictionary))    }        private func switchVideoSize() {        // 大小屏切换        if isCallSucess {            let frame = localVideo.frame            localVideo.frame = remoteVideo.frame            remoteVideo.frame = frame                        if localVideo.frame.width == ARScreenWidth {                view.insertSubview(localVideo, belowSubview: calledView)                view.insertSubview(remoteVideo, belowSubview: calledView)            } else {                view.insertSubview(remoteVideo, belowSubview: calledView)                view.insertSubview(localVideo, belowSubview: calledView)            }        }    }

// MARK - videoLayout
extension ARGroupVideoController {    func videoLayout() {        videoArr.count <= 1 ? destroyGroupVc() : nil                let count = videoArr.count        let padding: CGFloat = 1.0        var warpCount: CGFloat = 2.0        let rate: CGFloat = 1.0        if count > 4 {            if count <= 9 {                warpCount = 3.0            } else if count <= 16 {                warpCount = 4.0            } else {                warpCount = 5.0            }        }                let itemWidth: CGFloat = (ARScreenWidth - padding * (warpCount - 1))/warpCount        let itemHeight: CGFloat = itemWidth * rate        let index = ceil(CGFloat(videoArr.count)/warpCount)        containerConstraint.constant = itemHeight * index + (index - 1) * padding                var lastView: UIView!        for (index, object) in videoArr.enumerated() {            let video = object as UIView            containerView.insertSubview(video, at: 0)                        let rowCount: NSInteger = videoArr.count % NSInteger(warpCount) == 0 ? videoArr.count / NSInteger(warpCount) : videoArr.count / NSInteger(warpCount) + 1                        let currentRow: NSInteger = index / NSInteger(warpCount)            let currentColumn: NSInteger = index % NSInteger(warpCount)                        video.snp.remakeConstraints({ (make) in                make.width.equalTo(itemWidth)                make.height.equalTo(itemHeight)
                if (currentRow == 0) {                    make.top.equalTo(containerView)                }                                if (currentRow == rowCount - 1) {                    make.bottom.equalTo(containerView)                }                                if currentRow != 0 && (currentRow != rowCount - 1) {                    if currentColumn == 0 {                        make.top.equalTo(lastView.snp_bottom).offset(padding)                    } else {                        make.bottom.equalTo(lastView.snp_bottom).offset(padding)                    }                }                                if (currentColumn == 0) {                    make.left.equalTo(containerView);                }                                if (currentColumn == Int(warpCount) - 1) {                    make.right.equalTo(containerView)                }                                if currentColumn != 0 && (currentColumn != Int(warpCount) - 1) {                    make.left.equalTo(lastView.snp_right).offset(padding)                }            })            lastView = video        }    }}