突出显示何时viewDidAppear

Question

我的想法是当这个观点出现的时候。我想让它通过位置来检测。所以如果新加坡的用户。将重点介绍新加坡单元。有什么办法让它成为可能吗？我确实看到了这个函数，但是我不知道如何使用它

didHighlightRowAtIndexPath

这是视图

​

编码：

class LanguageViewController: BaseViewController, UITableViewDelegate, UITableViewDataSource, CLLocationManagerDelegate {

    @IBOutlet weak var optionsTableView: UITableView!

    let titleArr = ["About", "Terms", "Privacy Policy", "Reset Password", "Change Language", "Logout"]

    var countryList = [AnyObject]()
    var languageList = [AnyObject]()
    var selectRow = Int()
    var selectLanguage = Int()
    var isSelect = Bool()
    var tempCountry = [String]()
    var tempLanguage = [String]()
    var countryLbl : String = "Country"
    var languageLbl : String = "Language"

    // MARK: - Activity Lifecycle
    override func viewDidLoad() {
        super.viewDidLoad()
        setupWhiteLeftButton()
        //self.navigationItem.title = ""

        for country in countryList{
            tempCountry.append(country["CountryName"] as! String)
        }
        // Do any additional setup after loading the view.
    }

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

    func tableView(tableView: UITableView, didHighlightRowAtIndexPath indexPath: NSIndexPath) {
        indexPath.row == 0
    }

    // MARK: - UITableViewData Source & Delegate


    func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return tempCountry.count
    }

    func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
        return 40
    }

    func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        optionsTableView.backgroundColor = UIColor.redColor()
        let cell = optionsTableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as! CustomCountryTableViewCell
        cell.backgroundColor = UIColor.redColor()
        cell.titleLbl.text = tempCountry[indexPath.row]
        return cell
    }

    func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
        if indexPath.row == 0 {
//            let storyboard2 = UIStoryboard(name: "Profile", bundle: nil)
//            let AboutVC = storyboard2.instantiateViewControllerWithIdentifier("AboutVC") as! AboutViewController
//            self.navigationController?.pushViewController(AboutVC, animated: true)
//            optionsTableView.deselectRowAtIndexPath(indexPath, animated: true)
        }
    }
}

Answer 1

取一个变量来存储当前位置的索引

var loctionIndex: Int = -1

在位置更新器中更新loctionIndex，upadate方法使用该loctionIndex重新加载单行表视图，如下所示

if loctionIndex != -1 {
     let indexPath = NSIndexPath(forRow: loctionIndex, inSection: 0)
     tableview.reloadRowsAtIndexPaths([indexPath], withRowAnimation:UITableViewRowAnimation.None)
}

在这里写一些逻辑在单元格中行的索引方法。

 func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    optionsTableView.backgroundColor = UIColor.redColor()
    let cell = optionsTableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as! CustomCountryTableViewCell
    if loctionIndex == indexPath.row {
    cell.backgroundColor = UIColor.greenColor()
} else {
     cell.backgroundColor = UIColor.redColor()
  }
    cell.titleLbl.text = tempCountry[indexPath.row]
    return cell
}

Answer 2

首先使用以下代码检测国家：

设currentLocale = NSLocale.currentLocale()让countryCode =countryCode as？字符串

比国家字符串如果两者都是相同的高光，透细胞.