標籤 - > Alert Controller Textfield？我可以在警報控制器的文本字段中編輯標籤中的預先存在的文本嗎？ Swift 3，Xcode 8，IOS

Question

基本上，i have an alert controller set up so that when i click a button in the view controller, an alert controller pops up and i can type words into a textfield, click an "OK" button它將該文本插入視圖控制器中的標籤。我擴展了這種能力，以便我可以有preset keywords (like "Good," "Likely" and "Almost") that i can select from in the alert controller to speed up the typing process, as these words are typed a lot in my app.我在想，如果你還可以編輯我選擇的關鍵詞？每次我嘗試添加文本到標籤中的任何文本時，我都必須從空白文本框開始。

具體來說，無論我的標籤中是否有文本，我可以在文本框中準備好文本以進行編輯，下次我拉起警報控制器？

這是我到目前爲止，第二圖像：

//Editable Text Box with Preset Keywords 

@IBOutlet weak var UselessLabel: UILabel! 

@IBAction func UselessTapped(_ sender: UIButton) { 
    print("Useless Button Tapped") 
    openUselessAlert() 

} 

func openUselessAlert() { 

    //Create Alert Controller 
    let alert9 = UIAlertController (title: "Uselss:", message: nil, preferredStyle: UIAlertControllerStyle.alert) 

    //preset keyword as button in alert controller 
    let bt1 = UIAlertAction(title: "Good", style: UIAlertActionStyle.default){ 
     (action) in self.UselessLabel.text = "Good"} 

    alert9.addAction(bt1) 

    //preset keyword as button in alert controller 
    let bt2 = UIAlertAction(title: "Likely", style: UIAlertActionStyle.default){ 
     (action) in self.UselessLabel.text = "Likely"} 

    alert9.addAction(bt2) 

    //preset keyword as button in alert controller 
    let bt3 = UIAlertAction(title: "Almost", style: UIAlertActionStyle.default){ 
     (action) in self.UselessLabel.text = "Almost"} 

    alert9.addAction(bt3) 

    //Create Cancel Action 
    let cancel9 = UIAlertAction(title: "CANCEL", style: UIAlertActionStyle.cancel, handler: nil) 

    alert9.addAction(cancel9) 


    //Create OK Action 
    let ok9 = UIAlertAction(title: "OK", style: UIAlertActionStyle.default) { (action: UIAlertAction) in print("OK") 
     let textfield = alert9.textFields?[0] 
     print(textfield?.text!) 
     self.UselessLabel.text = textfield?.text! 
    } 

    alert9.addAction(ok9) 

    //Add Text Field 
    alert9.addTextField { (textfield: UITextField) in 
     textfield.placeholder = "Useless" 
    } 

    //Present Alert Controller 
    self.present(alert9, animated:true, completion: nil) 
} 

請幫幫忙！我對Xcode和編程一般都很陌生，所以在我看來，這是一個很大的白癡。

謝謝:)

Answer 1

只是文字

//Editable Text Box with Preset Keywords 

@IBOutlet weak var UselessLabel: UILabel! 

@IBAction func UselessTapped(_ sender: UIButton) { 
    print("Useless Button Tapped") 
    openUselessAlert() 

} 

func openUselessAlert() { 

    //Create Alert Controller 
    let alert9 = UIAlertController (title: "Uselss:", message: nil, preferredStyle: UIAlertControllerStyle.alert) 

    //preset keyword as button in alert controller 
    let bt1 = UIAlertAction(title: "Good", style: UIAlertActionStyle.default){ 
     (action) in self.UselessLabel.text = "Good"} 

    alert9.addAction(bt1) 

    //preset keyword as button in alert controller 
    let bt2 = UIAlertAction(title: "Likely", style: UIAlertActionStyle.default){ 
     (action) in self.UselessLabel.text = "Likely"} 

    alert9.addAction(bt2) 

    //preset keyword as button in alert controller 
    let bt3 = UIAlertAction(title: "Almost", style: UIAlertActionStyle.default){ 
     (action) in self.UselessLabel.text = "Almost"} 

    alert9.addAction(bt3) 

    //Create Cancel Action 
    let cancel9 = UIAlertAction(title: "CANCEL", style: UIAlertActionStyle.cancel, handler: nil) 

    alert9.addAction(cancel9) 


    //Create OK Action 
    let ok9 = UIAlertAction(title: "OK", style: UIAlertActionStyle.default) { (action: UIAlertAction) in print("OK") 
     let textfield = alert9.textFields?[0] 
     print(textfield?.text!) 
     self.UselessLabel.text = textfield?.text! 
    } 

    alert9.addAction(ok9) 

    //Add Text Field 
    alert9.addTextField { (textfield: UITextField) in 
     textfield.text = "Useless" 
    } 

    //Present Alert Controller 
    self.present(alert9, animated:true, completion: nil) 
}