使用解析检索密钥的所有对象

Question

我有一个名为groupConversation的全局数组，该数组填充在另一个UIViewController中。首先，数组为空，但当用户单击另一个UIViewController中的按钮时，它将被填充。但是，UITableViewController出现在另一个UIViewController之前。但是当在另一个UIViewController中单击按钮同时填充数组时，它会将用户弹出UITableViewController但UITableViewController为空，我不明白为什么？如何让UITableViewController包含数据？

import UIKit


class GroupChatTableViewController: UITableViewController {

override func viewDidLoad() {
    super.viewDidLoad()
    self.navigationController?.navigationBar.tintColor = UIColor.redColor()
    self.navigationItem.backBarButtonItem?.tintColor = UIColor.redColor()


    println()


    // Uncomment the following line to preserve selection between presentations
    // self.clearsSelectionOnViewWillAppear = false

    // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
    // self.navigationItem.rightBarButtonItem = self.editButtonItem()
}

override func viewWillAppear(animated: Bool) {
    self.navigationController?.navigationBar.tintColor = UIColor.orangeColor()
    self.navigationItem.backBarButtonItem?.tintColor = UIColor.orangeColor()
    self.tableView.reloadData()
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

// MARK: - Table view data source

override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
    // #warning Potentially incomplete method implementation.
    // Return the number of sections.
    return 1
}

override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    // #warning Incomplete method implementation.
    // Return the number of rows in the section.
    return groupConversation.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let groupChatCell = tableView.dequeueReusableCellWithIdentifier("groupChatCell", forIndexPath: indexPath) as UITableViewCell

    groupChatCell.textLabel?.text=groupConversation[indexPath.row]

    return groupChatCell
}


}