swift2 – Swift：点击textField开始动作

在我的代码中：

@IBOutlet weak var textField: UITextField!

@IBAction func textField(sender: AnyObject) {

    if textField.text != "" {
        let newSweet = CKRecord(recordtype: "Chat")
        newSweet["content"] = textField.text
        textField.delegate = self
        let publicData = CKContainer.defaultContainer().publiccloudDatabase
        publicData.saveRecord(newSweet,completionHandler: { (record:CKRecord?,error:NSError?) -> Void in
            if error == nil {
                dispatch_async(dispatch_get_main_queue(),{ () -> Void in
                    self.tableView.beginUpdates()
                    self.sweets.insert(newSweet,atIndex: 0)
                    let indexPath = NSIndexPath(forRow: 0,inSection: 0)
                    self.tableView.insertRowsAtIndexPaths([indexPath],withRowAnimation:
                        .Top)
                    func textFieldShouldReturn(textField: UITextField) -> Bool {
                        self.textField.resignFirstResponder()

                        return true
                    }})

            }else{
                print(error)
                }
        })
   }
}

我正在尝试访问cloudKit,因此当您在UITextField中键入内容时,它会激活UITextField @IBAction.
现在当我在UITextField中输入文本时没有任何反应,所以我需要它来激活@IBAction.有没有人有办法解决吗？

解决方法

在ViewController中,导入协议UITextFieldDelegate,如下所示：

class YourViewController: UIViewController,UITextFieldDelegate

在你的viewDidLoad中这样做：

override func viewDidLoad() {
    super.viewDidLoad()
    textField.delegate = self 
}

你必须安装委托方法：

func textFieldDidBeginEditing(textField: UITextField!) {
        let newSweet = CKRecord(recordtype: "Chat")
        newSweet["content"] = textField.text
        textField.delegate = self
        let publicData = CKContainer.defaultContainer().publiccloudDatabase
        publicData.saveRecord(newSweet,withRowAnimation:
                        .Top)
                    func textFieldShouldReturn(textField: UITextField) -> Bool {
                        self.textField.resignFirstResponder()

                        return true
                    }})

}

如果要单击键盘上的Return键将关闭键盘,则必须安装此TextFieldDelegate方法

func textFieldShouldReturn(textField: UITextField) -> Bool {
        self.textField.resignFirstResponder()
        return true
    }