中心思想就是继承UITabBarController，然后将系统的tabBar隐藏掉，然后创建一个View代替tabBar，然后定义好点击事件切换控制器，通过单例方法控制view的动画隐藏和显示。demo地址
调用方法
创建tabbar的时候只需要
let tabBarVC = TabBarViewController.addChildVc(controllerArr as? [Any], titles: arr as? [Any], images: defaultImageArr as? [Any], selectedImages: selectImageArr as? [Any], tabBarNaviChildVC: UINavigationController.init())
self.window?.rootViewController = tabBarVC;
即可创建成功
动态显示隐藏是这样调用
TabBarViewController.shareManager().hidesTabbar(yesOrNo: false, animation: true)
第一步
继承UITabBarController创建一个类TabBarViewController
1，定义一些用到的对象
let kScreenWidth:CGFloat = UIScreen.main.bounds.width
定义一个单例
static let _shareManager = TabBarViewController()
/** 自定义的覆盖原先的tarbar的控件 */
var tabBarView = UIView()
/** 记录前一次选中的按钮 */
var selectLastBtn = TabBarButton()
/* * 是否隐藏tabBar */
var tabBarHidden = Bool()
第二步
//初始化一个单例
class func shareManager()->TabBarViewController{ return _shareManager }
//进入页面之后调用的方法
override func viewDidLoad() {
super.viewDidLoad()
self.setUpTabbar()
}
//配置view替换tabbar
func setUpTabbar() {
self.tabBar.isHidden = true
let tabBarViewY:CGFloat = self.view.frame.size.height-49 s
elf.tabBarView = UIView.init(frame: CGRect.init(x: 0, y: tabBarViewY, width: kScreenWidth, height: 49))
self.tabBarView.isUserInteractionEnabled = true
self.tabBarView.backgroundColor = UIColor.white
self.tabBarView.layer.borderColor = UIColor.groupTableViewBackground.cgColor
self.tabBarView.layer.borderWidth = 1 self.view.addSubview(self.tabBarView) }
//添加子控制器的方法
class func addChildVc(_ childVcs: [Any]?, titles: [Any]?, images: [Any]?, selectedImages: [Any]?, tabBarNaviChildVC: UINavigationController?) -> TabBarViewController {
let baseTabBar = TabBarViewController.shareManager()
for i in 0...(childVcs?.count)! - 1 {
let tabBarNaviChildVC:UINavigationController = UINavigationController.init(rootViewController: childVcs![i] as! UIViewController)
baseTabBar .addChildViewController(tabBarNaviChildVC)
baseTabBar.creatButton(normal: images?[i] as? String, selected: selectedImages?[i] as? String, tittle: titles?[i]as?String, tag: i, index: CGFloat((childVcs?.count)!))
let button = baseTabBar.tabBarView.subviews[0];
baseTabBar .changeViewController((button as! TabBarButton));
}
return baseTabBar;
}
// 按钮被点击时调用
@objc func changeViewController(_ sender: TabBarButton?) {
sender?.isEnabled = false
if selectLastBtn != sender {
selectLastBtn.isEnabled = true
}
selectLastBtn = sender!
selectedViewController = self.viewControllers?[(sender?.tag)!]
}
//抽出来创建按钮方法
func creatButton(normal: String?, selected: String?, tittle: String?, tag: Int, index: CGFloat) {
let customButton = TabBarButton(type: .custom)
customButton.tag = tag
let count: CGFloat = index
let buttonW = CGFloat(tabBarView.frame.size.width / count)
let buttonH: CGFloat = tabBarView.frame.size.height
let rect:CGRect = CGRect(x: buttonW * CGFloat(tag), y: 0, width: buttonW, height: buttonH)
customButton.frame = rect;
customButton.setImage(UIImage(named: normal!), for: .normal)
customButton.setImage(UIImage(named: selected!), for: .disabled)
customButton.setTitle(tittle, for: .normal)
customButton.setTitleColor(UIColor.gray, for: .normal)
customButton.setTitleColor(UIColor.red, for: UIControlState.disabled)
customButton.addTarget(self, action:#selector(changeViewController(_:)), for: .touchDown) customButton.imageView?.contentMode = .center
customButton.titleLabel?.textAlignment = NSTextAlignment.center;
customButton.titleLabel?.font = UIFont.systemFont(ofSize: 12);
self.tabBarView.addSubview(customButton) }
// 是否动画隐藏tabBar 可以使用单例方法调用
func hidesTabbar(yesOrNo:Bool,animation:Bool) {
self.tabBarHidden = yesOrNo;
if yesOrNo == true {
if tabBarView.frame.origin.y == view.frame.size.height {
return
} }
else {
if tabBarView.frame.origin.y == view.frame.size.height - 49 {
return } }
if animation == true {
UIView.animate(withDuration: 0.3, animations: {
if yesOrNo == true {
self.tabBarView.frame = CGRect(x: self.tabBarView.frame.origin.x, y: self.tabBarView.frame.origin.y + 49, width: self.tabBarView.frame.size.width, height: self.tabBarView.frame.size.height)
} else {
self.tabBarView.frame = CGRect(x: self.tabBarView.frame.origin.x, y: self.tabBarView.frame.origin.y - 49, width: self.tabBarView.frame.size.width, height: self.tabBarView.frame.size.height)
} }) }
else{
UIView.animate(withDuration: 0.3, animations: {
if yesOrNo == true {
self.tabBarView.frame = CGRect(x: self.tabBarView.frame.origin.x, y: self.tabBarView.frame.origin.y + 49, width: self.tabBarView.frame.size.width, height: self.tabBarView.frame.size.height)
} else {
self.tabBarView.frame = CGRect(x: self.tabBarView.frame.origin.x, y: self.tabBarView.frame.origin.y - 49, width: self.tabBarView.frame.size.width, height: self.tabBarView.frame.size.height)
}
}) } }
第三步
文中的TabBarButton是继承了button，写了一个内部实现的图片在上文字在下的button。就重写了下边的两个方法
override func imageRect(forContentRect contentRect: CGRect) -> CGRect {
let imageW:CGFloat = contentRect.size.width;
let imageH:CGFloat = contentRect.size.height*0.6
return CGRect.init(x: 0, y: 5, width: imageW, height: imageH);
}
override func titleRect(forContentRect contentRect: CGRect) -> CGRect {
let titleY: CGFloat = contentRect.size.height * 0.6
let titleW: CGFloat = contentRect.size.width
let titleH: CGFloat = contentRect.size.height - titleY
return CGRect(x: 0, y: titleY, width: titleW, height: titleH) }