1 import UIKit
 2 
 3 class MainTabBarViewController: UITabBarController {
 4     
 5     override func  viewDidLoad() {
 6         super.viewDidLoad()
 7         //1.获取json文件的地址
 8         guard let jsonPath = NSBundle.mainBundle().pathForResource("MainVCSettings.json", ofType: nil) else {
 9             return
10         }
11         //2.获取json文件的数据
12         guard let jsonData = NSData(contentsOfFile: jsonPath) else {
13             return
14         }
15         //3.将json文件的数据转化为swift可读数据
16         guard let anyObject = try? NSJSONSerialization.JSONObjectWithData(jsonData, options: .MutableContainers) else {
17             return
18         }
19         
20         guard let dicArray = anyObject as? [[String:AnyObject]] else {
21             return
22         }
23         //4.提取json文件数据
24         for dic in dicArray {
25             //4.1提取数据
26             guard let vcName = dic["vcName"] as? String else {
27                 continue
28             }
29             guard let title = dic["title"] as? String else {
30                 continue
31             }
32             guard let imageName = dic["imageName"] as? String else {
33                 continue
34             }
35             //4.2添加控制器
36             addChildViewController(vcName, title: title, imageName: imageName)
37         }
38 }