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)
}
