如何以编程方式在swift ios中自动将光标从一个文本字段移动到另
发布时间:2020-12-14 05:22:58 所属栏目:百科 来源:网络整理
导读:func textFieldDidBeginEditing(textField: UITextField) { scrlView.setContentOffset(CGPointMake(0,textField.frame.origin.y-70),animated: true) if(textField == firstDigit){ textField.becomeFirstResponder() secondDigit.resignFirstResponder() }
func textFieldDidBeginEditing(textField: UITextField) { scrlView.setContentOffset(CGPointMake(0,textField.frame.origin.y-70),animated: true) if(textField == firstDigit){ textField.becomeFirstResponder() secondDigit.resignFirstResponder() } else if(textField == secondDigit){ textField.becomeFirstResponder() thirdDigit.resignFirstResponder() } else if(textField == thirdDigit){ //textField.becomeFirstResponder() fourthDigit.becomeFirstResponder() } 我使用四个文本字段进行OTP输入,其中一次只能输入一个数字.输入数字后,我需要将光标自动移动到下一个文本字段.
设置textField委托并添加目标:
override func viewDidLoad() { super.viewDidLoad() first.delegate = self second.delegate = self third.delegate = self fourth.delegate = self first.addTarget(self,action: "textFieldDidChange:",forControlEvents: UIControlEvents.EditingChanged) second.addTarget(self,forControlEvents: UIControlEvents.EditingChanged) third.addTarget(self,forControlEvents: UIControlEvents.EditingChanged) fourth.addTarget(self,forControlEvents: UIControlEvents.EditingChanged) } 现在,当文本更改时,更改textField func textFieldDidChange(textField: UITextField){ let text = textField.text if text?.utf16.count >= 1{ switch textField{ case first: second.becomeFirstResponder() case second: third.becomeFirstResponder() case third: fourth.becomeFirstResponder() case fourth: fourth.resignFirstResponder() default: break } }else{ } } 最后当用户开始编辑清除textField时 extension ViewController: UITextFieldDelegate{ func textFieldDidBeginEditing(textField: UITextField) { textField.text = "" } } (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |
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