给大家推荐两个学习的地址：
极客学院的视频：http://www.jikexueyuan.com/path/ios/
一个博客：http://blog.csdn.net/lizhongfu2013/article/details/29210015
主要想要实现一个模仿的登陆界面
代码：
//
// LoginViewController.swift
// IBM_LOGIN
//
// Created by dcintern on 6/26/15.
// Copyright (c) 2015 dcintern. All rights reserved.
//
//import Foundation
import UIKit
class LoginViewController: UIViewController
{
/// 定义属性
var QQNumber = UITextField()
var PassNumber = UITextField()
override func viewDidLoad() {
self.view.backgroundColor = UIColor.whiteColor()
super.viewDidLoad()
// 添加头图片
[self .addAllSubViews()];
}
// 添加所有子控件
func addAllSubViews(){
/// 平铺背景
var headImage = UIImageView(frame: CGRectMake(0,0, 400, 800))
headImage.image = UIImage(named:"123.jpeg")
self.view.addSubview(headImage)
/// QQ号输入提示，暂时没有用到
var phoneText = UILabel(frame: CGRectMake(30, 240, UIScreen.mainScreen().bounds.size.width-60, 30))
phoneText.text = ""
self.view.addSubview(phoneText)
/// QQ号输入框
var QQNumber = UITextField(frame: CGRectMake(30, 150, UIScreen.mainScreen().bounds.size.width-60, 30))
QQNumber.placeholder = " username"
QQNumber.layer.borderWidth = 2
QQNumber.layer.borderColor = UIColor.lightGrayColor().CGColor
QQNumber.layer.cornerRadius = 5
QQNumber.keyboardType = UIKeyboardType.NumberPad
self.view.addSubview(QQNumber)
self.QQNumber = QQNumber
/// 密码输入提示，暂时没用到
var passText = UILabel(frame: CGRectMake(30, 300, UIScreen.mainScreen().bounds.size.width-60, 30))
passText.text = ""
self.view.addSubview(passText)
/// 密码输入框
var PassNumber = UITextField(frame: CGRectMake(30, 200, UIScreen.mainScreen().bounds.size.width-60, 30))
PassNumber.placeholder = " password"
PassNumber.layer.borderWidth = 2
PassNumber.layer.borderColor = UIColor.lightGrayColor().CGColor
PassNumber.layer.cornerRadius = 5
self.view.addSubview(PassNumber)
self.PassNumber = PassNumber
/// 密码找回
var button = UIButton(frame: CGRectMake(200, 360, 120, 30))
UIButton.buttonWithType(UIButtonType.Custom)
button.setTitle("忘记密码", forState: UIControlState.Normal)
button.setTitleColor(UIColor.lightGrayColor(), forState: UIControlState.Normal)
self.view.addSubview(button)
button.addTarget(self, action: "onClick", forControlEvents: UIControlEvents.TouchUpInside)
}
/// 密码找回方法实现
func onClick()
{
///找回密码提示
UIAlertView(title: "温馨提示", message: "新密码已发送至手机上", delegate: nil, cancelButtonTitle: "确定", otherButtonTitles: "取消").show()
}
/**
点击界面键盘辞去第一响应者
*/
override func touchesBegan(touches: NSSet, withEvent event: UIEvent)
{
self.QQNumber.resignFirstResponder()
self.PassNumber.resignFirstResponder()
}
}
实现根据xml进行布局：
import UIkit
class LoginViewController : UIViewController,NSXMLParserDelegate
{
///
/// 定义属性
var m_Username = UITextField()
var m_Password = UITextField()
var m_backgroundRect = CGRectMake(0,0,0,0)
var m_UsernameRect = CGRectMake(0,0,0,0)
var m_PassWordRect = CGRectMake(0,0,0,0)
var m_ConnectRect = CGRectMake(0,0,0,0)
var m_ForgetRect = CGRectMake(0,0,0,0)
var myActivityIndicator: UIActivityIndicatorView!
override func viewDidLoad()
{
self.view.backgroundColor = UIColor.whiteColor()
super.viewDidLoad()
var parser = NSXMLParser(contentsOfURL: NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("LoginLayout", ofType: "xml")!))
parser?.delegate = self
parser?.parse()
// 添加头图片
[self .addAllSubViews()];
}
// 添加所有子控件
func addAllSubViews()
{
/// 平铺背景
// var headImage = UIImageView(frame: m_backgroundRect)
// headImage.image = UIImage(named:"background.jpg")
//self.view.addSubview(headImage)
//float lightblue[]={0.6824f, 0.7882f, 1.0f, 1.0f};
//var color = CGColorCreate(CGColorSpaceCreateDeviceRGB(), myColor)
ServerAddress.layer.borderColor = UIColor.blackColor().CGColor
ServerAddress.layer.cornerRadius = 5
self.view.addSubview(ServerAddress)
self.m_ServerAddress = ServerAddress
/// username input textbox
var Username = UITextField(frame: m_UsernameRect)
Username.placeholder = " username"
Username.layer.borderWidth = 2
Username.layer.borderColor = UIColor.blackColor().CGColor
Username.layer.cornerRadius = 5
self.view.addSubview(Username)
self.m_Username = Username
/// password input textbox
var Password = UITextField(frame: m_PassWordRect)
Password.placeholder = " password"
Password.layer.borderWidth = 2
Password.layer.borderColor = UIColor.blackColor().CGColor
Password.layer.cornerRadius = 5
self.view.addSubview(Password)
self.m_Password = Password
/// confirm the connection button
var confirmbutton = UIButton(frame: m_ConnectRect)
UIButton.buttonWithType(UIButtonType.Custom)
confirmbutton.setTitle("Connect", forState: UIControlState.Normal)
confirmbutton.setTitleColor(UIColor.blackColor(), forState: UIControlState.Normal)
self.view.addSubview(confirmbutton)
confirmbutton.addTarget(self, action: "onClickConfirm", forControlEvents: UIControlEvents.TouchUpInside)
/// findback password button
var button = UIButton(frame: m_ForgetRect)
UIButton.buttonWithType(UIButtonType.Custom)
button.setTitle("Forget password!", forState: UIControlState.Normal)
button.setTitleColor(UIColor.lightGrayColor(), forState: UIControlState.Normal)
self.view.addSubview(button)
button.addTarget(self, action: "onClickFindPasswordBack", forControlEvents: UIControlEvents.TouchUpInside)
// myActivityIndicator = UIActivityIndicatorView()
//myActivityIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyle.Gray
//myActivityIndicator.center = self.view.center;
myActivityIndicator = UIActivityIndicatorView(activityIndicatorStyle: .White)
myActivityIndicator.frame = CGRectMake(self.view.frame.size.width/2 - 50, 250, 100, 100)
myActivityIndicator.color = UIColor.blackColor()
self.view.addSubview(myActivityIndicator);
}
///on confirm connettion
func onClickConfirm()
{
///check if ip,username,passname is correct
println(m_ServerAddress.text)
//eares the space before and after
}
/// 密码找回方法实现
func onClickFindPasswordBack()
{
///找回密码提示, otherButtonTitles: "取消"这个参数如何传进去？
UIAlertView(title: "温馨提示", message: "新密码已发送至手机上", delegate: nil, cancelButtonTitle: "确定").show()
}
/**
点击界面键盘辞去第一响应者
*/
override func touchesBegan(touches: NSSet, withEvent event: UIEvent)
{
self.m_Username.resignFirstResponder()
self.m_Password.resignFirstResponder()
}
var currentNodeName:String!
func parser(parser: NSXMLParser, didStartElement elementName: String!, namespaceURI: String!, qualifiedName qName: String!, attributes attributeDict: [NSObject : AnyObject]!)
{
currentNodeName = elementName
//review the code using swith
if elementName == "background"
{
let x = CGFloat(((attributeDict["x"]! as String )as NSString).floatValue)
let y = CGFloat(((attributeDict["y"]! as String ) as NSString).floatValue)
let Width = CGFloat(((attributeDict["Width"]! as String )as NSString).floatValue)
let Height = CGFloat(((attributeDict["Height"]! as String ) as NSString).floatValue)
m_backgroundRect = CGRectMake(x,y,Width,Height)
}
else if(elementName == "ServerAddress")
{
let x = CGFloat(((attributeDict["x"]! as String )as NSString).floatValue)
let y = CGFloat(((attributeDict["y"]! as String ) as NSString).floatValue)
let Width = CGFloat(((attributeDict["Width"]! as String )as NSString).floatValue)
let Height = CGFloat(((attributeDict["Height"]! as String ) as NSString).floatValue)
m_ServerAddressRect = CGRectMake(x,y,Width,Height)
}
else if(elementName == "Username")
{
let x = CGFloat(((attributeDict["x"]! as String )as NSString).floatValue)
let y = CGFloat(((attributeDict["y"]! as String ) as NSString).floatValue)
let Width = CGFloat(((attributeDict["Width"]! as String )as NSString).floatValue)
let Height = CGFloat(((attributeDict["Height"]! as String ) as NSString).floatValue)
m_UsernameRect = CGRectMake(x,y,Width,Height)
}
else if(elementName == "Password")
{
let x = CGFloat(((attributeDict["x"]! as String )as NSString).floatValue)
let y = CGFloat(((attributeDict["y"]! as String ) as NSString).floatValue)
let Width = CGFloat(((attributeDict["Width"]! as String )as NSString).floatValue)
let Height = CGFloat(((attributeDict["Height"]! as String ) as NSString).floatValue)
m_PassWordRect = CGRectMake(x,y,Width,Height)
}
else if(elementName == "Connect")
{
let x = CGFloat(((attributeDict["x"]! as String )as NSString).floatValue)
let y = CGFloat(((attributeDict["y"]! as String ) as NSString).floatValue)
let Width = CGFloat(((attributeDict["Width"]! as String )as NSString).floatValue)
let Height = CGFloat(((attributeDict["Height"]! as String ) as NSString).floatValue)
m_ConnectRect = CGRectMake(x,y,Width,Height)
}
else if(elementName == "Forget")
{
let x = CGFloat(((attributeDict["x"]! as String )as NSString).floatValue)
let y = CGFloat(((attributeDict["y"]! as String ) as NSString).floatValue)
let Width = CGFloat(((attributeDict["Width"]! as String )as NSString).floatValue)
let Height = CGFloat(((attributeDict["Height"]! as String ) as NSString).floatValue)
m_ForgetRect = CGRectMake(x,y,Width,Height)
}
}
func parser(parser: NSXMLParser, foundCharacters string: String!) {
// println(string)
var str = string.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet())
if str != ""{
println("current node : (currentNodeName),value : (str)")
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
lazy var m_connect: ConnectServer? = {
return ConnectServer()
}()
}
xml：
<LoginLayout>
<background x="0" y="0" Width="400" Height="800">
<Image name="background.jpg"> </Image>
</background>
<Username x="30" y="150" Width="300" Height="30">
</Username>
<Password x="30" y="200" Width="300" Height="30">
</Password>
<Connect x="30" y="250" Width="100" Height="30">
</Connect>
<Forget x="200" y="250" Width="200" Height="30">
</Forget>
</LoginLayout>
对xml解析类的封装：
NSXMLParser(data: data)，这个有几种初始化的方法，但是string就不行，得转换成NSdata，还是比较蛋疼的
//
// VMXMLParser.swift
// XMLParserTest
//
// Created by Jimmy Jose on 22/08/14.
//https://github.com/varshylmobile/VMXMLParser
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
import Foundation
// Todo: Add documentation
class VMXMLParser: NSObject,NSXMLParserDelegate{
private let kParserError = "Parser Error"
private var activeElement = ""
private var previousElement = "-1"
private var previousElementValue = ""
private var arrayFinalXML = NSMutableArray()
private var dictFinalXML = NSMutableDictionary()
private var completionHandler:((tags:NSArray?, error:String?)->Void)?
var lameMode = true
var reoccuringTag:NSString = ""
var m_Projects:[String] = []
/**
Initializes a new parser with url of NSURL type.
:param: url The url of xml file to be parsed
:param: completionHandler The completion handler
:returns: Void.
*/
override init() {
super.init()
}
func parseXMLFromURL(url:NSURL,takeChildOfTag:NSString,completionHandler:((tags:NSArray?, error:String?)->Void)? = nil){
self.reoccuringTag = takeChildOfTag
VMXMLParser().initWithURL(url, completionHandler: completionHandler)
}
func parseXMLFromURLString(urlString:NSString,takeChildOfTag:NSString,completionHandler:((tags:NSArray?, error:String?)->Void)? = nil){
self.reoccuringTag = takeChildOfTag
initWithURLString(urlString, completionHandler: completionHandler)
}
func parseXMLFromData(data:NSData,takeChildOfTag:NSString,completionHandler:((tags:NSArray?, error:String?)->Void)? = nil){
self.reoccuringTag = takeChildOfTag
initWithContentsOfData(data, completionHandler:completionHandler)
}
class func initParserWithURL(url:NSURL,completionHandler:((tags:NSArray?, error:String?)->Void)? = nil){
VMXMLParser().initWithURL(url, completionHandler: completionHandler)
}
class func initParserWithURLString(urlString:NSString,completionHandler:((tags:NSArray?, error:String?)->Void)? = nil){
VMXMLParser().initWithURLString(urlString, completionHandler: completionHandler)
}
class func initParserWithData(data:NSData,completionHandler:((tags:NSArray?, error:String?)->Void)? = nil){
VMXMLParser().initWithContentsOfData(data, completionHandler:completionHandler)
}
private func initWithURL(url:NSURL,completionHandler:((tags:NSArray?, error:String?)->Void)? = nil) -> AnyObject {
parseXMLForUrl(url :url, completionHandler: completionHandler)
return self
}
private func initWithURLString(urlString :NSString,completionHandler:((tags:NSArray?, error:String?)->Void)? = nil) -> AnyObject {
let url = NSURL(string: urlString as String)!
parseXMLForUrl(url :url, completionHandler: completionHandler)
return self
}
private func initWithContentsOfData(data:NSData,completionHandler:((tags:NSArray?, error:String?)->Void)? = nil) -> AnyObject {
initParserWith(data: data)
return self
}
private func parseXMLForUrl(#url:NSURL,completionHandler:((tags:NSArray?, error:String?)->Void)? = nil){
self.completionHandler = completionHandler
beginParsingXMLForUrl(url)
}
private func beginParsingXMLForUrl(url:NSURL){
let request:NSURLRequest = NSURLRequest(URL:url)
let queue:NSOperationQueue = NSOperationQueue()
NSURLConnection.sendAsynchronousRequest(request,queue:queue,completionHandler:{response,data,error in
if(error != nil){
if(self.completionHandler != nil){
self.completionHandler?(tags:nil,error:error.localizedDescription)
}
}else{
self.initParserWith(data: data)
}})
}
private func initParserWith(#data:NSData){
var parser = NSXMLParser(data: data)
parser.delegate = self
var success:Bool = parser.parse()
if success {
if(self.arrayFinalXML.count > 0)
{
if(self.completionHandler != nil)
{
self.completionHandler?(tags:self.arrayFinalXML,error:nil)
}
}
}
else
{
if(self.completionHandler != nil)
{
self.completionHandler?(tags:nil,error:kParserError)
}
}
}
internal func parser(parser: NSXMLParser, didStartElement elementName: String, namespaceURI: String?, qualifiedName qName: String?, attributes attributeDict: [NSObject : AnyObject]) {
activeElement = elementName;
println(elementName)
if elementName == "Project"
{
let name = (attributeDict["Name"]! as String )
println(name)
m_Projects.append(name)
}
if(reoccuringTag.isEqualToString(elementName)){
dictFinalXML = NSMutableDictionary()
}
}
internal func parser(parser: NSXMLParser, didEndElement elementName: String, namespaceURI: String?, qualifiedName qName: String?) {
if(reoccuringTag.length == 0){
if((dictFinalXML.objectForKey(activeElement)) != nil){
arrayFinalXML.addObject(dictFinalXML)
dictFinalXML = NSMutableDictionary()
}else{
dictFinalXML.setValue(previousElementValue, forKey: activeElement)
}
}else{
//println(elementName)
if(reoccuringTag.isEqualToString(elementName)){
arrayFinalXML.addObject(dictFinalXML)
dictFinalXML = NSMutableDictionary()
}else{
dictFinalXML.setValue(previousElementValue, forKey: activeElement)
}
}
previousElement = "-1"
previousElementValue = ""
}
internal func parser(parser: NSXMLParser, foundCharacters string: String?) {
if var str = string as NSString? {
str = str.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet())
if((previousElement as NSString).isEqualToString("-1")){
previousElement = activeElement
previousElementValue = str as String
}else{
if((previousElement as NSString).isEqualToString(activeElement)){
previousElementValue = previousElementValue + (str as String)
}else{
previousElement = activeElement
previousElementValue = str as String
}
}
}
}
internal func parser(parser: NSXMLParser, parseErrorOccurred parseError: NSError) {
if(self.completionHandler != nil){
self.completionHandler?(tags:nil,error:parseError.localizedDescription)
}
}
}