IOS技术分享| any自习室场景实现

╰+攻爆jí腚メ 2022-09-11 07:23 256阅读 0赞

### 前言 ###

线上自习室，又称“在线自习室”“云自习室”“云上自习室”“云端自习室”，是一种用互联网技术打造的在线自习室。线上自习室打破了时间、空间的束缚，比线下自习室更便捷，形式更多样。anyRTC 作为全球实时音视频云服务供应商，推出了any自习室，致力于帮助开发者更快地实现实时互动场景。

### 场景实现 ###

#### 效果截屏 ####

![截屏预览][watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5L2Z55Sf5Li2OTE_size_20_color_FFFFFF_t_70_g_se_x_16]

#### iOS 体验 & 源码下载 ####

*  [下载体验][Link 1]
 *  [源码下载][Link 2]

### 开发环境 ###

*  开发工具：Xcode12 真机运行
 *  开发语言：Swift
 *  实现：连麦互动，包含推拉流、连麦、聊天等。

### SDK 集成方式 ###

#### 方式一：官网获取 ####

https://docs.anyrtc.io/download

#### 方式二：CocoaPods 获取 ####

platform :ios, '9.0'
    use_frameworks!
    
    target 'Your App' do
        #anyRTC 音视频库
        pod 'ARtcKit_iOS', '~> 4.2.2.4'
        #anyRTC 实时消息库
        pod 'ARtmKit_iOS', '~> 1.0.1.7'
    end

### 示例代码 ###

##### 效果展示 #####

![请添加图片描述][watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5L2Z55Sf5Li2OTE_size_20_color_FFFFFF_t_70_g_se_x_16 1]

##### 代码实现 #####

class RefreshGifHeader: MJRefreshHeader {
        var rotatingImage: UIImageView?
        
        override var state: MJRefreshState {
            didSet {
                switch state {
                case .idle,.pulling:
                    rotatingImage?.stopAnimating()
                    break
                case .refreshing:
                    rotatingImage?.startAnimating()
                    break
                default:
                    print("")
                }
            }
        }
        
        override func prepare() {
            super.prepare()
            rotatingImage = UIImageView.init()
            rotatingImage?.image = UIImage(named: "icon_refresh")
            self.addSubview(rotatingImage!)
            
            let rotationAnim = CABasicAnimation(keyPath: "transform.rotation.z")
            rotationAnim.fromValue = 0
            rotationAnim.toValue = Double.pi * 2
            rotationAnim.repeatCount = MAXFLOAT
            rotationAnim.duration = 1
            rotationAnim.isRemovedOnCompletion = false
            rotatingImage!.layer.add(rotationAnim, forKey: "rotationAnimation")
        }
        
        override func placeSubviews() {
            super.placeSubviews()
            rotatingImage?.frame = CGRect.init(x: 0, y: 0, width: 40, height: 40)
            rotatingImage?.center = CGPoint(x: self.mj_w / 2, y: self.mj_h / 2)
        }
    }
    
    class ARMainViewController: UICollectionViewController {
        private var flowLayout: UICollectionViewFlowLayout!
        private var index = 0
        
        var modelArr = [ARMainRoomListModel]()
        
        lazy var placeholder: UILabel = {
            let label: UILabel = UILabel()
            label.frame = CGRect.init(x: (collectionView.width - 200)/2, y: (collectionView.height - 218)/2, width: 200, height: 188)
            label.attributed.text = """
             \(.image(#imageLiteral(resourceName: "icon_nonet"), .custom(size: CGSize(width: 189, height: 141))), action: requestRoomList)
             \("\n 网络开小差了～", .foreground(UIColor(hexString: "#757575")), .font(UIFont(name: PingFang, size: 14)!), .action(requestRoomList))
             """
            label.numberOfLines = 0
            label.textAlignment = .center
            return label
        }()
    
        override func viewDidLoad() {
            super.viewDidLoad()
            (UserDefaults.string(forKey: .uid) != nil) ? login() : registered()
    
            // Uncomment the following line to preserve selection between presentations
            // self.clearsSelectionOnViewWillAppear = false
    
            // Do any additional setup after loading the view.
            flowLayout = UICollectionViewFlowLayout.init()
            flowLayout.sectionInset = UIEdgeInsets(top: 15, left: 15, bottom: 0, right: 15)
            flowLayout?.scrollDirection = .vertical
            flowLayout?.minimumLineSpacing = 9
            flowLayout?.minimumInteritemSpacing = 9
            let width = (ARScreenWidth - 40)/2
            flowLayout?.itemSize = CGSize.init(width: width, height: width * 1.529)
            collectionView.collectionViewLayout = flowLayout
            collectionView.mj_header = RefreshGifHeader(refreshingBlock: {
                  [weak self] () -> Void in
                  self?.requestRoomList()
            })
            
            self.view.addSubview(placeholder)
            NotificationCenter.default.addObserver(self, selector: #selector(requestRoomList), name: UIResponder.studyRoomNotificationLoginSucess, object: nil)
        }

#### 实例化 SDK 对象 ####

##### 代码实现 #####

private func initializeEngine() {
            // init ARtcEngineKit
            rtcKit = ARtcEngineKit.sharedEngine(withAppId: UserDefaults.string(forKey: .appid)!, delegate: self)
            rtcKit.setChannelProfile(.liveBroadcasting)
            rtcKit.enableVideo()
            
            // init ARtmKit
            rtmEngine = ARtmKit.init(appId: UserDefaults.string(forKey: .appid)!, delegate: self)
            rtmEngine.login(byToken: infoVideoModel.rtmToken, user: UserDefaults.string(forKey: .uid) ?? "0") {(errorCode) in
            }
        }
        
        func joinChannel() {
            let uid = UserDefaults.string(forKey: .uid)
            rtcKit.joinChannel(byToken: infoVideoModel.rtcToken, channelId: infoVideoModel.roomId!, uid: uid) {(channel, uid, elapsed) in
                print("joinChannel sucess")
            }
        }
        
        func leaveChannel() {
            rtcKit.leaveChannel { (stats) in
                print("leaveChannel")
            }
        }
        
        @objc func sendChannelMessage(text: String) {
            // 发送频道消息
            let rtmMessage: ARtmMessage = ARtmMessage.init(text: text)
            let options: ARtmSendMessageOptions = ARtmSendMessageOptions()
            rtmChannel?.send(rtmMessage, sendMessageOptions: options) { (errorCode) in
                print("Send Channel Message")
            }
        }
        
        private func addOrUpdateChannel(key: String, value: String) {
            // 更新频道属性
            let channelAttribute = ARtmChannelAttribute()
            channelAttribute.key = key
            channelAttribute.value = value
            
            let attributeOptions = ARtmChannelAttributeOptions()
            attributeOptions.enableNotificationToChannelMembers = true
            
            rtmEngine.addOrUpdateChannel(infoVideoModel.roomId!, attributes: [channelAttribute], options: attributeOptions) { (errorCode) in
                print("addOrUpdateChannel code: \(errorCode.rawValue)")
            }
        }

#### 成员列表 ####

##### 效果展示 #####

![member][]

##### 代码实现 #####

class ARMemberView: UIView {
        fileprivate var memberArr = [ARMicModel]()
        fileprivate var memberWidth = appDelegate.allowRotation ? ARScreenHeight/2 : ARScreenWidth
        fileprivate var memberHeight = appDelegate.allowRotation ? (ARScreenWidth - 50) : (ARScreenHeight/2 - 50)
        
        fileprivate lazy var tableView: UITableView = {
            let tableView: UITableView = UITableView(frame: CGRect(x: 0.0, y: 0.0, width: memberWidth, height: memberHeight), style: .plain)
            tableView.delegate = self
            tableView.dataSource = self
            tableView.rowHeight = 52
            tableView.tableFooterView = UIView()
            return tableView
        }()
        
        required init?(coder: NSCoder) {
            super.init(coder: coder)
            self.addSubview(placeholder)
            self.addSubview(tableView)
        }
        
        func reloadData() {
            memberArr = memberArr.sorted(by: { $0.seat < $1.seat })
            tableView.isHidden = (memberArr.count == 0)
            tableView.reloadData()
        }
    }
    
    class ARMemberViewController: UIViewController {
        
        @IBAction func didClickMemberButton(_ sender: UIButton) {
            self.selectIndex = sender.tag
            if !sender.isSelected {
                let selected = broadcasterButton.isSelected
                broadcasterButton.isSelected = audienceButton.isSelected
                audienceButton.isSelected = selected
                changeScrollerViewContentSize()
                changeLinePlaceWithIndex()
            }
        }
        
        func changeScrollerViewContentSize() {
            UIView.animate(withDuration: 0.25) { [self] in
                var offset = self.scrollView.contentOffset
                offset.x = memberWidth * CGFloat(self.selectIndex)
                self.scrollView.contentOffset = offset
            }
        }
        
        func changeLinePlaceWithIndex() {
            UIView.animate(withDuration: 0.25) {
                var frame = self.lineView.frame
                frame.origin.x = (self.selectIndex == 0) ? self.memberWidth * 0.25 - 11 : (self.memberWidth * 0.75 - 11)
                
                self.lineView.frame = frame
            }
        }
    }
    
    extension ARMemberViewController: UIScrollViewDelegate {
        
        func scrollViewDidScroll(_ scrollView: UIScrollView) {
            selectIndex = NSInteger(scrollView.contentOffset.x / memberWidth)
            
            let selected = (selectIndex == 0)
            broadcasterButton.isSelected = selected
            audienceButton.isSelected = !selected
            changeLinePlaceWithIndex()
        }
    }

#### 发送图片消息 ####

##### 效果展示 #####

![image\_message][image_message]

##### 实现代码 #####

any自习室演示了如何发送图片消息，图片上传逻辑在此略过，仅做参考。

override func sendRandomImage() {
            // 发送图片
            let imageDic = randomImage()
            
            let index = imageDic.allKeys[0] as! Int
            let width: CGFloat = index > 9 ? 600.0 : 400.0
            let height: CGFloat = index > 9 ? 400.0 : 600.0
            
            let imageUrl: String = imageDic.allValues[0] as! String
            logVC?.log(logModel: ARLogModel(userName: UserDefaults.string(forKey: .userName), uid: UserDefaults.string(forKey: .uid), seat: localMicModel?.seat ?? 0, imageUrl: imageUrl, status: .image, avatar: UserDefaults.string(forKey: .avatar), imageWidth: width, imageHeight: height))
            
            let dic: NSDictionary! = ["cmd": "picMsg", "userName": UserDefaults.string(forKey: .userName) as Any, "avatar": UserDefaults.string(forKey: .avatar) as Any, "imgUrl": imageUrl, "imageWidth": width, "imageHeight": height, "setNum": localMicModel?.seat as Any]
            sendChannelMessage(text: getJSONStringFromDictionary(dictionary: dic))
        }
        
        
        // MARK: - ARtmChannelDelegate
        
        func channel(_ channel: ARtmChannel, messageReceived message: ARtmMessage, from member: ARtmMember) {
            //收到频道消息回调
            let dic = getDictionaryFromJSONString(jsonString: message.text)
            let value: String? = dic.object(forKey: "cmd") as? String
            
            if value == "picMsg" {
                // 图片消息
                logVC?.log(logModel: ARLogModel(userName: dic.object(forKey: "userName") as? String, uid: member.uid, seat: dic.object(forKey: "setNum") as! NSInteger, imageUrl: dic .object(forKey: "imgUrl") as? String, status: .image, avatar: dic .object(forKey: "avatar") as? String, imageWidth: dic.object(forKey: "imageWidth") as! CGFloat, imageHeight: dic.object(forKey: "imageHeight") as! CGFloat))
            }
        }

### 自习室信令参照表 ###

<table> 
 <thead> 
  <tr> 
   <th>Key</th> 
   <th>Value</th> 
   <th>类型</th> 
   <th>参数</th> 
   <th>描述</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>cmd</td> 
   <td>enterTip</td> 
   <td>频道消息</td> 
   <td>userName(string)、avatar(string)</td> 
   <td>进入房间提示消息</td> 
  </tr> 
  <tr> 
   <td>cmd</td> 
   <td>leaveTip</td> 
   <td>频道消息</td> 
   <td>userName(string)、avatar(string)</td> 
   <td>离开房间提示消息</td> 
  </tr> 
  <tr> 
   <td>cmd</td> 
   <td>hostTip</td> 
   <td>频道消息</td> 
   <td>userName(string)</td> 
   <td>xx成为主持人</td> 
  </tr> 
  <tr> 
   <td>cmd</td> 
   <td>msg</td> 
   <td>频道消息</td> 
   <td>content(string),userName(string)、avatar(string)、setNum(NSNumber,不在麦上0，麦上写具体麦位）</td> 
   <td>聊天消息</td> 
  </tr> 
  <tr> 
   <td>cmd</td> 
   <td>seatChange</td> 
   <td>频道消息</td> 
   <td>{[userName, uid, avatar, seat, seatTime]}</td> 
   <td>麦位更改</td> 
  </tr> 
  <tr> 
   <td>cmd</td> 
   <td>picMsg(可方后)</td> 
   <td>频道消息</td> 
   <td>imgUrl, imageHeight, imageWidth, avatar, userName, setNum</td> 
   <td>图片消息</td> 
  </tr> 
 </tbody> 
</table>

### 结束语 ###

any自习室项目中还存在一些bug和待完善的功能点。仅供参考，欢迎大家fork。有不足之处欢迎大家指出issues。  
最后再贴一下 Github开源下载地址 。

[any自习室 Github][Link 2]

[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5L2Z55Sf5Li2OTE_size_20_color_FFFFFF_t_70_g_se_x_16]: /images/20220828/01912cdc22ba4e099a3b19e1614a1753.png
[Link 1]: https://www.pgyer.com/Qpl6
[Link 2]: https://github.com/anyRTC-UseCase/StudyLive
[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5L2Z55Sf5Li2OTE_size_20_color_FFFFFF_t_70_g_se_x_16 1]: /images/20220828/02e54c9c6a074d81a83fe9e989c5e7c3.png
[member]: /images/20220828/fa0247b410c945d5ab388ab73035ff09.png
[image_message]: /images/20220828/7a6d0ff2f7ab4107ac3df3dcf3802d04.png