代码之家 › 专栏 › 技术社区 › user9606399

在tableview中添加行时如何更改textfield中的textcolor

swift4.1 xcode9.2 xcode9 swift4

user9606399 · 技术社区 · 7 年前

我有两个按钮。一个是@addIncomeTapped,另一个是@addexpensetrapped。我想做的是,一旦用户点击(例如)addIncomeTapped按钮,就在我的文本字段中更改文本颜色。我正在努力想办法,但运气不好:“(我希望有人能帮助我?我仍在努力学习斯威夫特的更多知识。提前谢谢你。”。

import UIKit
class MySecondCell:UITableViewCell,UITextFieldDelegate
{    
    @IBOutlet weak var budgetTitle: UITextField!
    @IBOutlet weak var budgetAmount: UITextField!
}

class secondViewController: UIViewController, UITableViewDataSource, UITableViewDelegate{

   var textfield: UITextField!    
   var SecondBudgetName = [String]()

   @IBOutlet weak var balanceView: UIView!
   @IBOutlet weak var mytableView: UITableView!

   override func viewDidLoad() {
    super.viewDidLoad()

    mytableView.delegate = self
    mytableView.dataSource = self

    view.addVerticalGradientLayer(topColor: primaryColor, bottomColor: secondaryColor)

}

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


@IBAction func addIncomeTapped(_ sender: Any) {
print("Add income tapped")
    //Add new row
    insert()
}

@IBAction func addExpenseTapped(_ sender: Any) {
print("Add expense tapped")
    //Add new row
    insert()

}

func insert(){
    SecondBudgetName.append("\(SecondBudgetName.count + 1)")
    let insertionIndexPath = IndexPath(row: SecondBudgetName.count - 1 , section: 0)
    mytableView.insertRows(at: [insertionIndexPath], with: .automatic)
}

//Configure TableView

func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {

    if editingStyle == UITableViewCellEditingStyle.delete {
        SecondBudgetName.remove(at: indexPath.row)
        tableView.beginUpdates()
        tableView.deleteRows(at: [indexPath], with: UITableViewRowAnimation.automatic)
        tableView.endUpdates()
    }
}

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

    return SecondBudgetName.count
}

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

    return cell

}

}

here is my tableviewcontroller

1 回复 | 直到 7 年前

DionizB 7 年前

第一类名称以大写开头。
其次,关于您的代码,您需要添加一些代码:
在…上 secondViewController 您将添加另外两个声明, var budgetTitleTextFieldColor = UIColor.black 因为黑色是文本或您使用的任何颜色的默认颜色 var budgetAmountTextFieldColor = UIColor.black 与相同 budgetTitleTextFielColor

添加到

 func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = mytableView.dequeueReusableCell(withIdentifier: "budgetCell") as! MySecondCell
cell.budgetTitle.textColor = budgetTitleTextFieldColor
cell.budgetAmount.textColor = budgetAmountTextFieldColor
return cell
}

然后在按钮操作中

@IBAction func addIncomeTapped(_ sender: Any) {
    print("Add income tapped")
    //Add new row
    insert()
    // here you change the colors we declared in the beginning, it depends which one you want to change
    budgetTitleTextFieldColor = UIColor.whateverYourColorIs
    budgetAmountTextFieldColor = UIColor.whateverYourColorIs
    // don't forget this
    tableView.reloadData()}
 @IBAction func addExpenseTapped(_ sender: Any) {
       print("Add expense tapped")
       //Add new row
       insert()
       // here you change the colors we declared in the beginning
       budgetTitleTextFieldColor = UIColor.whateverYourColorIs
       budgetAmountTextFieldColor = UIColor.whateverYourColorIs
       // don't forget this
      tableView.reloadData()
}