自定义TabBar

2016-12-8 13:55 上传

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核心代码：

import UIKit class RootTabBarController: **UITabBarController** { //tabbar的高度 fileprivate let myHeight: CGFloat = 64 //存放子视图 fileprivate var viewArray = [UIView]() override func viewDidLoad() { super.viewDidLoad() //清除顶部线条 self.clearTabBarTopLine() //添加顶部的线条以及圆弧 let bgV = LineVeiw(frame: CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: myHeight)) bgV.backgroundColor = UIColor.groupTableViewBackground self.tabBar.addSubview(bgV) //创建子控制器 self.creatSubViewCtrs() } //MARK:清除顶部线条 fileprivate func clearTabBarTopLine(){ let rect = CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height) UIGraphicsBeginImageContext(rect.size) let context = UIGraphicsGetCurrentContext() context?.setFillColor(UIColor.clear.cgColor) context?.fill(rect) let img = UIGraphicsGetImageFromCurrentImageContext() UIGraphicsEndImageContext() self.tabBar.backgroundImage = img self.tabBar.shadowImage = img } //在这里修改 override func viewWillLayoutSubviews() { //重新设置tabbar 的高度 var frame = self.tabBar.frame frame.size.height = myHeight frame.origin.y = self.view.frame.size.height - myHeight self.tabBar.frame = frame self.tabBar.barStyle = .default //设置图片偏移，因为加高了tabbar for i in 0..<self.tabBar.items!.count { let itm = self.tabBar.items![i] if i != 2 { itm.imageInsets = UIEdgeInsets(top: myHeight - 49 - 5, left: 0, bottom: -(myHeight - 49 - 5), right: 0) }else{ itm.imageInsets = UIEdgeInsets(top: 5, left: 0, bottom: -5, right: 0) } } } override func viewDidLayoutSubviews() { self.viewArray.removeAll() for index in 0..<self.tabBar.subviews.count { let view = self.tabBar.subviews[index] self.viewArray.append(view) } for i in 0..<self.viewArray.count { let v = self.viewArray[i] v.layer.removeAllAnimations() if self.viewArray.count > 5 { //如果添加了其他视图，论文，则会多 if i == self.viewArray.count - 3 { self.animation(v) } }else{ if i == 2 { self.animation(v) } } } } //MARK:动画 fileprivate func animation(_ view: UIView){ let layer = view.layer layer.cornerRadius = 5.0 //2.写剧本 let scaleAnimate = CABasicAnimation(keyPath: 'transform.scale') scaleAnimate.fromValue = 0.95 scaleAnimate.toValue = 1.0 scaleAnimate.autoreverses = true scaleAnimate.repeatCount = MAXFLOAT scaleAnimate.duration = 0.8 //第二个剧本 let opaqueAnimate = CABasicAnimation(keyPath: 'opacity') opaqueAnimate.fromValue = 0.7 opaqueAnimate.toValue = 1 opaqueAnimate.autoreverses = true opaqueAnimate.repeatCount = MAXFLOAT opaqueAnimate.duration = 0.8 //把剧本交给演员开始动画 layer.add(scaleAnimate, forKey: 'scaleAnimate') layer.add(opaqueAnimate, forKey: 'opacityAnimate') } fileprivate func creatSubViewCtrs(){ //1. let oneVC = OneViewController() let one = UINavigationController(rootViewController: oneVC) one.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName:UIColor.white] one.navigationBar.barTintColor = UIColor(red: 246/255.0, green: 93/255.0, blue: 34/255.0, alpha: 1) one.tabBarItem = UITabBarItem(title: '第一', image: UIImage(named: 'homeA')?.withRenderingMode(.alwaysOriginal), selectedImage: UIImage(named: 'homeL')?.withRenderingMode(.alwaysOriginal)) //2. let towVC = TowViewController() let tow = UINavigationController(rootViewController: towVC) tow.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName:UIColor.white] tow.navigationBar.barTintColor = UIColor(red: 246/255.0, green: 93/255.0, blue: 34/255.0, alpha: 1) tow.tabBarItem = UITabBarItem(title: '第二', image: UIImage(named: 'reportA')?.withRenderingMode(.alwaysOriginal), selectedImage: UIImage(named: 'reportL')?.withRenderingMode(.alwaysOriginal)) //中间 let midVC = MidViewController() let mid = UINavigationController(rootViewController: midVC) mid.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName:UIColor.white] mid.navigationBar.barTintColor = UIColor(red: 246/255.0, green: 93/255.0, blue: 34/255.0, alpha: 1) mid.tabBarItem = UITabBarItem(title: '', image: UIImage(named: 'baseAct')?.withRenderingMode(.alwaysOriginal), selectedImage: UIImage(named: 'baseAct')?.withRenderingMode(.alwaysOriginal)) //3. let threeVC = ThreeViewController() let three = UINavigationController(rootViewController: threeVC) three.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName:UIColor.white] three.navigationBar.barTintColor = UIColor(red: 246/255.0, green: 93/255.0, blue: 34/255.0, alpha: 1) three.tabBarItem = UITabBarItem(title: '第三', image: UIImage(named: 'messageA')?.withRenderingMode(.alwaysOriginal), selectedImage: UIImage(named: 'messageL')?.withRenderingMode(.alwaysOriginal)) //4. let fourVC = FourViewController() let four = UINavigationController(rootViewController: fourVC) four.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName:UIColor.white] four.navigationBar.barTintColor = UIColor(red: 246/255.0, green: 93/255.0, blue: 34/255.0, alpha: 1) four.tabBarItem = UITabBarItem(title: '第亖', image: UIImage(named: 'shopA')?.withRenderingMode(.alwaysOriginal), selectedImage: UIImage(named: 'shopL')?.withRenderingMode(.alwaysOriginal)) //添加到控制器数组 let tabArray = [one,tow,mid,three,four] self.viewControllers = tabArray //设置文字的颜色 UITabBarItem.appearance().setTitleTextAttributes([NSForegroundColorAttributeName: UIColor.gray], for: .normal) UITabBarItem.appearance().setTitleTextAttributes([NSForegroundColorAttributeName: UIColor.orange], for: .selected) } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } }

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