展开没有Storyboard segue的tableview

Question

我正在尝试创建一个类似的表视图如下:

https://github.com/justinmfischer/SwiftyExpandingCells

我已经有一个完整的表视图与内容，包括一个过滤系统。当前的问题是，我想实现相同的功能来展开单元格和显示详细信息，，而不使用故事板。

示例代码(link)使用了storyboard segue，但我想去掉它这样它就可以通过代码做同样的事情。我去掉了背景的标签。我想先通过点击tableview单元格获取标题和新控制器。

DetailViewController

class DetailVC: UIViewController {
var brand: Brand?
override func viewDidLoad() {
    super.viewDidLoad()
    self.setup()
}
func setup() {
    self.view.frame.origin.y = UIApplication.sharedApplication().statusBarFrame.size.height
    if let brand = self.brand {
        self.title = brand.name
    }
}
}

这部分需要修改

override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    self.selectedCellFrame = tableView.convertRect(tableView.cellForRowAtIndexPath(indexPath)!.frame, toView: tableView.superview)
    self.selectedBrand = BrandManager.sharedInstance.brands[indexPath.row]
    self.performSegueWithIdentifier(.DetailVC , sender: nil)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    switch segueIdentifierForSegue(segue) {
        case .DetailVC:
            let vc = segue.destinationViewController as! DetailVC
                vc.brand = self.selectedBrand
            self.navigationController?.delegate = self
    }
}

Answer 1

override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
        self.selectedCellFrame = tableView.convertRect(tableView.cellForRowAtIndexPath(indexPath)!.frame, toView: tableView.superview)
        self.selectedBrand =  BrandManager.sharedInstance.brands[indexPath.row]
        let vc = storyboard?.instantiateViewControllerWithIdentifier("DetailVc") as! DetailVC
        vc.brand = self.selectedBrand
        self.navigationController?.pushViewController(vc, animated: true)
     }//// add the storyboardID for the detailsVc as "DetailVc"