Question

我有一个带有菜单选项的tableView。在这个菜单选项中，我有图像和标签。

我希望当我点击一个选项时，图标图像会将当前颜色更改为另一种颜色。

var menuNameArr : Array = [String]()
var iconImageNormal : Array = [UIImage]()
var iconImageSelected : Array = [UIImage]()

@IBOutlet weak var imgLogo: UIImageView!

override func viewDidLoad() {
    super.viewDidLoad()

    menuNameArr = ["Menu", "Map", "Favorites", "Orders", "Settings", "Help"]
    iconImageNormal = [UIImage(named: "icon-coffee-cup-gray")!, UIImage(named: "icon-placeholder-gray")!,
                       UIImage(named: "icon-star-gray")!, UIImage(named: "icon-shopping-cart-gray")!,
                       UIImage(named: "icon-settings-gray")!, UIImage(named: "icon-help-gray")!]
    iconImageSelected = [UIImage(named: "icon-coffee-cup-green")!, UIImage(named: "icon-placeholder-green")!,
                         UIImage(named: "icon-star-green")!, UIImage(named: "icon-shopping-cart-green")!,
                         UIImage(named: "icon-settings-green")!, UIImage(named: "icon-help-green")!]

}

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

func numberOfSections(in tableView: UITableView) -> Int {
    // #warning Incomplete implementation, return the number of sections
    return 1
}

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

}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "MenuTableViewCell", for: indexPath) as! MenuTableViewCell

    cell.imgIcon.image = iconImageNormal[indexPath.row]

    cell.lblMenuName.text! = menuNameArr[indexPath.row]
    cell.lblMenuName.textColor = UIColor(colorLiteralRed: 183.0/255.0, green: 183.0/255.0, blue: 183.0/255.0, alpha: 1)

    return cell
}

有谁知道我是怎么做到的？

Answer 1

您可以添加tableview didSelectRowAtIndexPath。

的委托

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath){
    self.tableView.reloadData()
    if let cell = tableView.cellForRow(at: indexPath) as? MenuTableViewCell {
        cell.imgIcon.image = iconImageSelected[indexPath.row]
    }
}

希望它能奏效。

Answer 2

首先，确保设置UITableViewDelegate，然后将以下函数添加到您的类中：

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath){

    if let cell = tableView.cellForRow(at: indexPath) as? MenuTableViewCell {
        cell.imgIcon.image = iconImageSelected[indexPath.row]
    }
}

在Swift 3中的tableView中更改图像颜色

2 个答案: