Swift创建UITabBarController 自定义选中i

16进制数转UIColor:

import UIKit

public extension UIColor {
    static func hexStringToColor(hexString: String) -> UIColor {
        
        var mString = hexString.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet())
        
        if mString.characters.count < 6 { return UIColor.blackColor() }
        if mString.hasPrefix("0X") { mString = mString.substringFromIndex(mString.startIndex.advancedBy(2)) }
        if mString.hasPrefix("#") {mString = mString.substringFromIndex(mString.startIndex.advancedBy(1))}
        if mString.characters.count != 6 { return UIColor.blackColor() }
        
        var range: NSRange = NSMakeRange(0, 2)
        
        let rString = (mString as NSString).substringWithRange(range)
        range.location = 2
        let gString = (mString as NSString).substringWithRange(range)
        range.location = 4
        let bString = (mString as NSString).substringWithRange(range)
        
        var r: UInt32 = 0x0
        var g: UInt32 = 0x0
        var b: UInt32 = 0x0
        
        NSScanner.init(string: rString).scanHexInt(&r)
        NSScanner.init(string: gString).scanHexInt(&g)
        NSScanner.init(string: bString).scanHexInt(&b)
        
        return UIColor(red: CGFloat(r)/255.0, green: CGFloat(g)/255.0, blue: CGFloat(b)/255.0, alpha: CGFloat(1.0))
    }
}

继承于UITabBarController

import UIKit

class MCustomTabBarController: UITabBarController {

    override func viewDidLoad() {
        super.viewDidLoad()
        creatSubViewControllers()
    }
    
    func creatSubViewControllers() {
        let mainViewController = MMainViewController()
        let mainItem: UITabBarItem = UITabBarItem(title: "首页", image: UIImage(named: "qt_tab_shy_n"), selectedImage: UIImage(named: "qt_tab_shy_f"))
        mainViewController.tabBarItem = mainItem
        
        let houseListViewController = MHouseListViewController()
        let houseListItem: UITabBarItem = UITabBarItem(title: "房源", image: UIImage(named: "qt_tab_fy_n"), selectedImage: UIImage(named: "qt_tab_fy_f"))
        houseListViewController.tabBarItem = houseListItem
        
        let mapViewController = MMapViewController()
        let mapItem: UITabBarItem = UITabBarItem(title: "地图", image: UIImage(named: "qt_tab_dt_n"), selectedImage: UIImage(named: "qt_tab_dt_f"))
        mapViewController.tabBarItem = mapItem
        
        let mineViewController = MMineViewController()
        let mineItem: UITabBarItem = UITabBarItem(title: "我", image: UIImage(named: "qt_tab_wd_n"), selectedImage: UIImage(named: "qt_tab_wd_f"))
        mineViewController.tabBarItem = mineItem
        
        let tabBarArray = [mainViewController, houseListViewController, mapViewController, mineViewController]
        self.viewControllers = tabBarArray
    }
    
}

在AppDelegate中：

var window: UIWindow?

    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        // Override point for customization after application launch.
        
        self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
        self.window?.makeKeyAndVisible()
        let root = MCustomTabBarController()
        root.tabBar.tintColor = UIColor.hexStringToColor("#ff8500")
        self.window?.rootViewController = root
        
        return true
    }

效果图：

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