swift-05

PageView  bug修正  1.连续滑动上标不正确  2.滑动到边缘判断

// 2.定义需要的参数

var progress : CGFloat = 0

var targetIndex = 0

var sourceIndex = 0

// 3.计算进度

progress = scrollView.contentOffset.x.truncatingRemainder(dividingBy: scrollView.bounds.width) / scrollView.bounds.width

if progress == 0 {

return

}

// 4.计算下标值

let index = Int(scrollView.contentOffset.x / scrollView.bounds.width)

// 5.判断用户是左滑动还是右滑动

if collectionView.contentOffset.x > startOffsetX { // 左滑动

sourceIndex = index

targetIndex = index + 1

if targetIndex > childVcs.count - 1 {

return

}

} else { // 右滑动

sourceIndex = index + 1

targetIndex = index

progress = 1 - progress

if targetIndex < 0 {

return}

2.Socket 客户端  服务端 第三方 ysocket

2.1客户端

-1.根据ip 和 端口号创建客户端

fileprivate lazy var tcpClient : TCPClient = TCPClient(addr: "192.168.37.247",port :2828)

0建立连接

func connnect() -> Bool {

return tcpClient.connect(timeout: 5).0

}

1.断开连接

func disconnect() {

tcpClient.close()

}

数据的读取

2.开始读数据: 1.数据内容长度(和服务器沟通好用几个字节4)  +  数据类型长度(和服务器沟通好用几个字节2--根据长度获取类型数据) + 具体内容数据(根据数据内容长度获取)

2.1 处理具体内容数据

func startReadMsg() {

DispatchQueue.global().async {

while true {

if let lengthByte = self.tcpClient.read(4) {

// 1.获取数据的长度

let lengthData = NSData(bytes: lengthByte, length: 4)

var length : Int = 0

lengthData.getBytes(&length, length: 4)

// 2.读取消息的类型

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.获取具体的内容

guard let dataBytes = self.tcpClient.read(length) else {

return

}

let msgData = Data(bytes: dataBytes, count: length)

// 4.处理消息

DispatchQueue.main.async {

self.handleMsg(MessageType(rawValue: type)!, msgData)

}

3.处理消息: 根据不同消息类型定义一个枚举--相应处理---用代理回调到控制器做相应的ui处理

*这里的消息类型是自己定义的方便处理相应的ui刷新---这个类型和服务器约定好  int   1   2   3   4.. 也就是数据类型

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)

数据发送 : 最终是 : sendData = 内容长度data + 内容类型data +  内容data


func enterRoom() {

sendMessage(type: .enterRoom, msgData: userInfo.data())

}

func leaveRoom() {

sendMessage(type: .leaveRoom, msgData: userInfo.data())

}

func sendChatMessage(_ messsage : String) {

// 1.获取聊天的数据

let chatMsg = ChatMessage.Builder()

chatMsg.userInfo = userInfo

chatMsg.message = messsage

let msgData = (try! chatMsg.build()).data()

// 2.发送数据

sendMessage(type: .chatMessage, msgData: msgData)

}

func sendGift(_ giftName : String, _ giftURL : String, _ giftID : String, _ giftCount : Int) {

// 1.获取礼物的数据

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.发送数据

sendMessage(type: .giftMessage, msgData: msgData)

}

fileprivate func sendMessage(type : MessageType, msgData : Data) {

// 1.获取字符串的长度

var length = msgData.count

let lengthData = Data(bytes: &length, count: 4)

// 2.获取消息的类型

var tempType = type.rawValue

let typeData = Data(bytes: &tempType, count: 2)

// 3.将message转成Data类型

tcpClient.send(data: lengthData + typeData + msgData)

}

4.ProtocolBuffers的使用

1.为什么用这个,怎么用--------用这个和后台沟通方便以对象的形式可以展示,一般是服务器写完这个文件 --我们再生成一个相应的swift或者oc文件,

返回值中有 throw  必须得 try!

let msgData = (try! giftMsg.build()).data()

优点:可以直接转成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.上两部做完就可直接取  文件中相应的对象使用例如

// 1.获取礼物的数据

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.发送数据

sendMessage(type: .giftMessage, msgData: msgData)









}

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