创建 viewController, 凭借 json 文件， 任意显示想展示的内容 ，
不需App 升级
自定制 下面 的 tabBar, 隐藏 系统的， 显示 自己制造的 view
应该 用 解耦，
何必 UIButton + UILabel,
UIButton ,很强大，
系统的 UITab
import UIKit
class MainTabBarController: UITabBarController {
//tabbar背景视图
private var bgView: UIView?
//json文件对应的数组
//计算属性
private var array: Array<Dictionary<String,String>>? {
get {
//读文件
let path = NSBundle.mainBundle().pathForResource("Ctrl.json", ofType: nil)
var myArray: Array<Dictionary<String,String>>? = nil
if let filePath = path {
let data = NSData(contentsOfFile: filePath)
if let jsonData = data {
do {
let jsonValue = try NSJSONSerialization.JSONObjectWithData(jsonData, options: .MutableContainers)
if jsonValue.isKindOfClass(NSArray.self) {
myArray = jsonValue as? Array<Dictionary<String,String>>
}
}catch {
//程序出现异常
print(error)
return nil
}
}
}
return myArray
}
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
//Swift里面，一般在类的内部调用属性和方法的时候，可以不写self，一般在闭包里面写self
//创建视图控制器
createViewControllers()
}
//创建视图控制器
func createViewControllers(){
//视图控制器名字
var ctrlNames = [String]()
//tabbar上面的图片
var imageNames = [String]()
//tabbar上面的标题文字
var titleNames = [String]()
if let tmpArray = self.array {
//json文件的数据解析成功
//并且数组里面有数据
for dict in tmpArray {
let name = dict["ctrlName"]
let titleName = dict["titleName"]
let imageName = dict["imageName"]
ctrlNames.append(name!)
titleNames.append(titleName!)
imageNames.append(imageName!)
}
}else{
ctrlNames = ["CookBookViewController", "CommunityViewController","MallViewController","FoodClassViewController","ProfileViewController"]
titleNames = ["食材","社区","商城","食课","我的"]
imageNames = ["home","community","shop","shike","mine"]
}
var vCtrlArray = Array<UINavigationController>()
for i in 0..<ctrlNames.count {
//创建视图控制器
let ctrlName = "TestKitchen." + ctrlNames[i]
let cls = NSClassFromString(ctrlName) as! UIViewController.Type
let ctrl = cls.init()
//导航
let navCtrl = UINavigationController(rootViewController: ctrl)
vCtrlArray.append(navCtrl)
}
self.viewControllers = vCtrlArray
//隐藏系统的tabbar
tabBar.hidden = true
//自定制tabbar
self.createCustomTabbar(titleNames, imageNames: imageNames)
}
//自定制tabbar
/*
@param titleNames:文字的数组
@param imageNames:图片的数组
*/
func createCustomTabbar(titleNames: [String], imageNames: [String]) {
//1.创建背景视图
bgView = UIView.createView()
bgView?.backgroundColor = UIColor.whiteColor()
//设置边框
bgView?.layer.borderWidth = 1
bgView?.layer.borderColor = UIColor.grayColor().CGColor
view.addSubview(bgView!)
//添加约束
bgView?.snp_makeConstraints(closure: {
[weak self]
(make) in
make.left.right.equalTo(self!.view)
make.bottom.equalTo(self!.view)
make.top.equalTo(self!.view.snp_bottom).offset(-49)
})
//2.循环添加按钮
//按钮的宽度
let width = kScreenWidth/5.0
for i in 0..<imageNames.count {
//图片
let imageName = imageNames[i]
let titleName = titleNames[i]
//2.1 按钮
let bgImageName = imageName+"_normal"
let selectBgImageName = imageName+"_select"
let btn = UIButton.createBtn(nil, bgImageName: bgImageName, selectBgImageName: selectBgImageName, target: self, action: #selector(clickBtn(_:)))
bgView?.addSubview(btn)
//MARK: - 就是这里
//添加约束
btn.snp_makeConstraints(closure: {
[weak self]
(make) in
make.top.bottom.equalTo(self!.bgView!)
make.width.equalTo(width)
make.left.equalTo(width*CGFloat(i))
})
//2.2 文字
let label = UILabel.createLabel(titleName, font: UIFont.systemFontOfSize(8), textAlignment: .Center, textColor: UIColor.grayColor())
btn.addSubview(label)
//约束
label.snp_makeConstraints(closure: {
(make) in
make.left.right.equalTo(btn)
make.top.equalTo(btn).offset(32)
make.height.equalTo(12)
})
//设置tag值
btn.tag = 300+i
label.tag = 400
//默认选中第一个按钮
if i == 0 {
btn.selected = true
label.textColor = UIColor.orangeColor()
}
}
}
func clickBtn(curBtn: UIButton) {
//1.取消之前选中按钮的状态
let lastBtnView = bgView!.viewWithTag(300+selectedIndex)
if let tmpBtn = lastBtnView {
//上次选中的按钮
let lastBtn = tmpBtn as! UIButton
let lastView = tmpBtn.viewWithTag(400)
if let tmpLabel = lastView {
//上次选中的标签
let lastLabel = tmpLabel as! UILabel
lastBtn.selected = false
lastLabel.textColor = UIColor.grayColor()
}
}
//2.设置当前选中按钮的状态
let curLabelView = curBtn.viewWithTag(400)
if let tmpLabel = curLabelView {
let curLabel = tmpLabel as! UILabel
curBtn.selected = true
curLabel.textColor = UIColor.orangeColor()
}
//3.选中视图控制器
selectedIndex = curBtn.tag - 300
}
//MARK: - 在这里
//显示tabbar
func showTabbar(){
UIView.animateWithDuration(1) {//(0.05) {
[weak self] in
self!.bgView?.hidden = false
}
}
//隐藏tabbar
func hideTabbar() {
UIView.animateWithDuration(1) {//(0.05) {
[weak self] in
self!.bgView?.hidden = true
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
