Question

你知道吗（你能看到）为什么我不能从FirstResponder辞职并隐藏键盘？

仅供参考：Xcode 9

import UIKit

class ViewController: UIViewController, UITextFieldDelegate {

    @IBOutlet weak var label: UILabel!
    @IBOutlet weak var text: UITextField!

    override func viewDidLoad() {
        super.viewDidLoad()

        self.text.delegate = self
        let tap = UITapGestureRecognizer(target: self, action: #selector(ViewController.tapFunction))
        label.isUserInteractionEnabled = true
        label.addGestureRecognizer(tap)
    }

    var keyboardInputEnabled = true
    @objc func tapFunction(sender:UITapGestureRecognizer) {
        if self.keyboardInputEnabled {
            self.text.becomeFirstResponder()
        }else{
            self.view.endEditing(true)
            self.text.resignFirstResponder()
        }
        self.keyboardInputEnabled = !self.keyboardInputEnabled
    }

    func textFieldShouldReturn(_ textField: UITextField) -> Bool {
        return self.keyboardInputEnabled
    }

    func textFieldShouldEndEditing(_ textField: UITextField) -> Bool {
        return self.keyboardInputEnabled
    }

    func textFieldShouldBeginEditing(_ textField: UITextField) -> Bool {
        return self.keyboardInputEnabled
    }


    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

}

Answer 1

因为textFieldShouldEndEditing第二次运行tapFunction会导致render() { const description = JSON.parse(rowData.description); const lang = I18n.locale; return ( <Cell cellTitle='test' cellDescription={description[lang]} ... /> ) }返回false，从而阻止它结束编辑模式。

取自this

通常，您将从此方法返回true以允许文本字段以辞退第一响应者状态。你可能会返回false，但是，如果您的代理人检测到无效内容文本域。返回false会阻止用户切换到另一个控件，直到文本字段包含有效值。

Answer 2

尝试

self.view.endEditing(true)用于禁用键盘

无法从UITextField中resignFirstResponder

2 个答案: