- 1.創(chuàng)建一個(gè)json文件
創(chuàng)建一個(gè)json文件
// MARK: 添加子控制器
private func addChileControllers(){
// 1.獲取json文件路徑
let path = Bundle.main.path(forResource: "MainVCSettings.json", ofType: nil)
// 2.通過(guò)文件路徑創(chuàng)建data
if let jsonPath = path{
let jsonData = NSData(contentsOfFile: jsonPath)
do {
// 有可能發(fā)生異常的代碼放到這里
// 3.序列化json數(shù)據(jù) --> Array
// try : 發(fā)生異常會(huì)跳到catch 中繼續(xù)執(zhí)行
let dictArr = try JSONSerialization.jsonObject(with: jsonData! as Data, options: JSONSerialization.ReadingOptions.mutableContainers)
// 4.遍歷數(shù)組谓苟,動(dòng)態(tài)創(chuàng)建控制器和設(shè)置數(shù)據(jù)
// 在Swift中祝辣,如果需要遍歷一個(gè)數(shù)組蹬叭,必須明確數(shù)據(jù)的類型
for dict in dictArr as! [[String: String]] {
addChildViewController(childControllerName: dict["vcName"]!, tittle: dict["title"]!, imageName: dict["imageName"]!)
}
print(dictArr)
} catch {
// 發(fā)生異常會(huì)執(zhí)行的代碼
print(error)
// 從本地加載控制器
addChildViewController(childControllerName: "HomeViewController", tittle: "首頁(yè)", imageName: "tabbar_home")
addChildViewController(childControllerName: "MessageViewController", tittle: "消息", imageName: "tabbar_message_center")
addChildViewController(childControllerName: "DiscoverViewController", tittle: "廣場(chǎng)", imageName: "tabbar_discover")
addChildViewController(childControllerName: "ProfileViewController", tittle: "我", imageName: "tabbar_profile")
}
}
}
// MARK: 具體的每個(gè)控制器的操作
private func addChildViewController(childControllerName: String,tittle:String ,imageName:String) {
// 1.動(dòng)態(tài)獲取命名空間
let namespace = Bundle.main.infoDictionary!["CFBundleExecutable"] as! String
// 2.將字符串轉(zhuǎn)換為類
// 2.1.默認(rèn)情況下命名空間就是項(xiàng)目的名稱访得,但是命名空間的名稱是可以更改的
let Clas: AnyClass? = NSClassFromString(namespace + "." + childControllerName)
// 3.通過(guò)類創(chuàng)建對(duì)象
// 3.1.將AnyClass 轉(zhuǎn)化為指定的類
let vcClass = Clas as! UIViewController.Type
// 4.通過(guò)class創(chuàng)建對(duì)象
let vc = vcClass.init()
// 1.設(shè)置首頁(yè)對(duì)應(yīng)的數(shù)據(jù)
vc.tabBarItem.image = UIImage(named: imageName)
vc.tabBarItem.selectedImage = UIImage(named: imageName + "_highlighted")
vc.title = tittle
// 2.給子控制器包裝一個(gè)導(dǎo)航控制器
let nav = UINavigationController()
nav.addChildViewController(vc)
// 3.將導(dǎo)航控制器添加到當(dāng)前控制器上
addChildViewController(nav)
}