PageView ?bug修正 ?1.連續(xù)滑動上標不正確 ?2.滑動到邊緣判斷
// 2.定義需要的參數(shù)
var progress : CGFloat = 0
var targetIndex = 0
var sourceIndex = 0
// 3.計算進度
progress = scrollView.contentOffset.x.truncatingRemainder(dividingBy: scrollView.bounds.width) / scrollView.bounds.width
if progress == 0 {
return
}
// 4.計算下標值
let index = Int(scrollView.contentOffset.x / scrollView.bounds.width)
// 5.判斷用戶是左滑動還是右滑動
if collectionView.contentOffset.x > startOffsetX { // 左滑動
sourceIndex = index
targetIndex = index + 1
if targetIndex > childVcs.count - 1 {
return
}
} else { // 右滑動
sourceIndex = index + 1
targetIndex = index
progress = 1 - progress
if targetIndex < 0 {
return}
2.Socket 客戶端 ?服務端 第三方 ysocket
2.1客戶端
-1.根據(jù)ip 和 端口號創(chuàng)建客戶端
fileprivate lazy var tcpClient : TCPClient = TCPClient(addr: "192.168.37.247",port :2828)
0建立連接
func connnect() -> Bool {
return tcpClient.connect(timeout: 5).0
}
1.斷開連接
func disconnect() {
tcpClient.close()
}
數(shù)據(jù)的讀取
2.開始讀數(shù)據(jù): 1.數(shù)據(jù)內(nèi)容長度(和服務器溝通好用幾個字節(jié)4) ?+ ?數(shù)據(jù)類型長度(和服務器溝通好用幾個字節(jié)2--根據(jù)長度獲取類型數(shù)據(jù)) + 具體內(nèi)容數(shù)據(jù)(根據(jù)數(shù)據(jù)內(nèi)容長度獲取)
2.1 處理具體內(nèi)容數(shù)據(jù)
func startReadMsg() {
DispatchQueue.global().async {
while true {
if let lengthByte = self.tcpClient.read(4) {
// 1.獲取數(shù)據(jù)的長度
let lengthData = NSData(bytes: lengthByte, length: 4)
var length : Int = 0
lengthData.getBytes(&length, length: 4)
// 2.讀取消息的類型
guard let typeBytes = self.tcpClient.read(2) else {
self.tcpClient.read(length)
continue
}
let typeData = NSData(bytes: typeBytes, length: 2)
var type : Int = 0
typeData.getBytes(&type, length: 2)
// 3.獲取具體的內(nèi)容
guard let dataBytes = self.tcpClient.read(length) else {
return
}
let msgData = Data(bytes: dataBytes, count: length)
// 4.處理消息
DispatchQueue.main.async {
self.handleMsg(MessageType(rawValue: type)!, msgData)
}
3.處理消息: 根據(jù)不同消息類型定義一個枚舉--相應處理---用代理回調(diào)到控制器做相應的ui處理
*這里的消息類型是自己定義的方便處理相應的ui刷新---這個類型和服務器約定好 ?int ? 1 ? 2 ? 3 ? 4.. 也就是數(shù)據(jù)類型
enum MessageType : Int {
case enterRoom = 0
case leaveRoom = 1
case chatMessage = 2
case giftMessage = 3
}
extension HYSocket {
fileprivate func handleMsg(_ type : MessageType, _ msgData : Data) {
switch type {
case .enterRoom:
?let userInfo = try! UserInfo.parseFrom(data: msgData)
delegate?.hySocket(self, enterRoom: userInfo)
case .leaveRoom:?
let userInfo = try! UserInfo.parseFrom(data: msgData)
delegate?.hySocket(self, leaveRoom: userInfo)
case .chatMessage:
let chatMessage = try! ChatMessage.parseFrom(data: msgData)
delegate?.hySocket(self, receiveMsg: chatMessage)
case .giftMessage:
let giftMessage = try! GiftMessage.parseFrom(data: msgData)
delegate?.hySocket(self, receiveGift: giftMessage)
數(shù)據(jù)發(fā)送 : 最終是 : sendData = 內(nèi)容長度data + 內(nèi)容類型data + ?內(nèi)容data
func enterRoom() {
sendMessage(type: .enterRoom, msgData: userInfo.data())
}
func leaveRoom() {
sendMessage(type: .leaveRoom, msgData: userInfo.data())
}
func sendChatMessage(_ messsage : String) {
// 1.獲取聊天的數(shù)據(jù)
let chatMsg = ChatMessage.Builder()
chatMsg.userInfo = userInfo
chatMsg.message = messsage
let msgData = (try! chatMsg.build()).data()
// 2.發(fā)送數(shù)據(jù)
sendMessage(type: .chatMessage, msgData: msgData)
}
func sendGift(_ giftName : String, _ giftURL : String, _ giftID : String, _ giftCount : Int) {
// 1.獲取禮物的數(shù)據(jù)
let giftMsg = GiftMessage.Builder()
giftMsg.userInfo = userInfo
giftMsg.giftName = giftName
giftMsg.giftUrl = giftURL
giftMsg.giftId = giftID
giftMsg.giftCount = Int32(giftCount)
let msgData = (try! giftMsg.build()).data()
// 2.發(fā)送數(shù)據(jù)
sendMessage(type: .giftMessage, msgData: msgData)
}
fileprivate func sendMessage(type : MessageType, msgData : Data) {
// 1.獲取字符串的長度
var length = msgData.count
let lengthData = Data(bytes: &length, count: 4)
// 2.獲取消息的類型
var tempType = type.rawValue
let typeData = Data(bytes: &tempType, count: 2)
// 3.將message轉(zhuǎn)成Data類型
tcpClient.send(data: lengthData + typeData + msgData)
}
4.ProtocolBuffers的使用
1.為什么用這個,怎么用--------用這個和后臺溝通方便以對象的形式可以展示,一般是服務器寫完這個文件 --我們再生成一個相應的swift或者oc文件,
返回值中有 throw ?必須得 try!
let msgData = (try! giftMsg.build()).data()
優(yōu)點:可以直接轉(zhuǎn)成data
syntax = "proto2";
message UserInfo {
required int32 userID = 1;
required string username = 2;
required string iconURL = 3;
required int32 level = 4;
}
message ChatMessage {
required string message = 1;
required UserInfo userInfo = 2;
}
message GiftMessage {
required string giftName = 1;
required string giftURL = 2;
required string giftID = 3;
required int32 giftCount = 4;
required UserInfo userInfo = 5;
}
2.cocopods直接集成
3.上兩部做完就可直接取 ?文件中相應的對象使用例如
// 1.獲取禮物的數(shù)據(jù)
let giftMsg = GiftMessage.Builder()
giftMsg.userInfo = userInfo
giftMsg.giftName = giftName
giftMsg.giftUrl = giftURL
giftMsg.giftId = giftID
giftMsg.giftCount = Int32(giftCount)
let msgData = (try! giftMsg.build()).data()
// 2.發(fā)送數(shù)據(jù)
sendMessage(type: .giftMessage, msgData: msgData)
}
