在 Swift 中，默认情况下一切都是公开的.在类之外定义变量:

In Swift, everything is public by default. Define your variables outside the classes:

import UIKit

var placesArray: NSMutableArray!

class FirstViewController: UIViewController {
//
..
//
}

然后访问它

import UIKit

class TableViewController: UITableViewController {
//
placesArray = [1, 2, 3]
//
}