[纯代码]Swift 2.0 开发新浪微博

开发环境:Xcode 7 Beta 4

1.1: 部署初步架构

1.2 设置根控制器(AppDelegate.swift)

<span style="font-family:Microsoft YaHei;"> func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {// Override point for customization after application launch.window = UIWindow (frame: UIScreen.mainScreen().bounds )window?.backgroundColor = UIColor.whiteColor()window?.rootViewController = MainUITabBarController()window?.makeKeyAndVisible()return true}</span>

1.3 自定义TarbBar

<span style="font-family:Microsoft YaHei;">import UIKitclass MainUITabBarController: UITabBarController {override func viewDidLoad() {super.viewDidLoad()// Do any additional setup after loading the view.addChildViewControllers()setComposeButton()}///设置Buttonprivate func setComposeButton() {//计算Button 高度let w = tabBar.bounds.width / CGFloat (viewControllers!.count)// Button 已有宽和高的Rectlet rect = CGRect(x: 0, y: 0, width: w, height: tabBar.bounds.height)//使用偏移 设置Button位置composeButton.frame = CGRectOffset(rect, 2 * w, 0)}/// 添加所有子控制器private func addChildViewControllers() {//Start添加所有子控制器————————–addChildViewController(HomeTableViewController(), title:"首页",imageName:"tabbar_home" )addChildViewController(MessageTableViewController(), title:"消息",imageName:"tabbar_message_center" )addChildViewController(UIViewController())addChildViewController(DiscoverTableViewController(), title:"发现",imageName:"tabbar_discover" )addChildViewController(profileTableViewController(), title:"我",imageName:"tabbar_profile" )//end—————————————–}///懒加载创建Buttonlazy private var composeButton: UIButton = {let button = UIButton ()//Start设置Button素材———————————button.setImage(UIImage(named: "tabbar_compose_icon_add"), forState: UIControlState.Normal)button.setImage(UIImage(named: "tabbar_compose_icon_add_highlighted"), forState: UIControlState.Highlighted)button.setBackgroundImage(UIImage(named: "tabbar_compose_button"), forState: UIControlState.Normal )button.setBackgroundImage(UIImage(named: "tabbar_compose_button_highlighted"), forState: UIControlState.Highlighted )//end———————————————–//此处不提示得手敲self.tabBar.addSubview(button)button.addTarget(self, action: "ClickComposeButton", forControlEvents: UIControlEvents.TouchUpInside)return button}()/// 添加控制器方法////// – parameter vc: 视图控制器/// – parameter title : 标题/// – parameter imageName: 图像名称private func addChildViewController(vc:UIViewController, title: String, imageName: String) {tabBar.tintColor = UIColor.orangeColor()vc.title = titlevc.tabBarItem.image = UIImage(named: imageName)let nav = UINavigationController(rootViewController: vc)addChildViewController(nav)}</span>

1.4 通过继承关系设置登录界面

注: 根据用户是否登录来判断界面是否切换

1.4.1自定义一个继承UITableViewController的控制器

1.4.2 修改所有控制器的继承关系,继承BaseTableViewController

1.4.3 设置BaseTableViewController的View

<span style="font-family:Microsoft YaHei;"> ///设置自定义登录Viewprivate func setVistorView() {//创建空View,测试使用view = UIView ()//设置颜色view.backgroundColor = UIColor.orangeColor()}</span>

1.4.4 重写BaseTableViewController 的loadView()方法

<span style="font-family:Microsoft YaHei;">//定义一个用户是否登录的开关var userLogin = true</span><span style="font-family:Microsoft YaHei;"> override func loadView() {//判断用户登录是否成功切换ViewuserLogin ? super.loadView() : setVistorView()}</span>

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