Swift5学习之旅之UITextView、UITextField

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Swift5学习之旅----UITextView和UITextField

UITextView和UITextField最大的区别是：UITextView支持多行输入，而UITextField只能单行输入。

UITextField可以使用密码

UITextView是UIScrollView类型属于view类型，UITextField是UIControl
UIControl默认情况下不会将自己捕获的时间传给superview，而UIView会将事件传给superview

UITextView

UITextView的相关功能代码

import UIKitclass MyTextView: UITextView,UITextViewDelegate {var maxHeight: CGFloat = 60 //定义最大高度override init(frame: CGRect, textContainer: NSTextContainer?){super.init(frame: frame, textContainer: textContainer)self.delegate = selfself.layer.borderColor = #colorLiteral(red: 0.9607843161, green: 0.7058823705, blue: 0.200000003, alpha: 1)self.layer.borderWidth = 0.5self.layer.cornerRadius = 5}required init?(coder: NSCoder) {fatalError("init(coder:) has not been implemented")}//根据字数的多少改变textView的大小func textViewDidChange(_ textView: UITextView) {let frame = textView.frametextView.tintColor = #colorLiteral(red: 0.9529411793, green: 0.6862745285, blue: 0.1333333403, alpha: 1)
//        textView.isEditable = true//定义一个size值用于计算textview的高度let Size = CGSize(width: frame.size.width, height: CGFloat(MAXFLOAT))//定义trueHeight获取textview 的真实高度var trueHeight = textView.sizeThatFits(Size)//如果textview的高度大于最大高度就位最大高度并可以滚动，否则不能滚动if trueHeight.height >= maxHeight{trueHeight.height = maxHeight//设置滚动textView.isScrollEnabled = true}else{textView.isScrollEnabled = false}//设置文本字体textView.font = UIFont.systemFont(ofSize: 20)textView.frame.size.height=trueHeight.height
//        键盘的类型
//        textView.keyboardType = UIKeyboardType.URL
//        let attributeString:NSMutableAttributedString=NSMutableAttributedString(string: "富文本")
//
//        textView.attributedText = attributeString}
}

UITextField

在这里插入图片描述
相关功能的实现

import UIKitclass MyTextField: UITextField,UITextFieldDelegate {override init(frame: CGRect){super.init(frame: frame)self.backgroundColor = UIColor.whiteself.textColor = #colorLiteral(red: 0.09019608051, green: 0, blue: 0.3019607961, alpha: 1)self.delegate = self}required init?(coder: NSCoder) {fatalError("init(coder:) has not been implemented")}//        //        设置边框样式为圆角矩形//        //        其中，文本输入框的边框样式有以下几种：//        ////        //        public enum UITextBorderStyle : Int {//        ////        //        case none  无边框//        ////        //        case line 直线边框//        ////        //        case bezel 圆角矩形边框//        ////        //        case roundedRect 边线+阴影func textFieldShouldReturn(_ textField: UITextField) -> Bool {textField.resignFirstResponder()print(textField.text!)return true}func password(){//设置键盘的输入 显示便于输入数字的虚拟键盘
//        textfield.keyboardType = UIKeyboardType.numberPadself.keyboardType = .asciiCapableself.placeholder = "请输入密码"self.isSecureTextEntry = trueself.clearButtonMode = .never//增加清除按钮
//        self.clearButtonMode = .whileEditing//最小可缩小的字号self.minimumFontSize = 14//圆角边距self.borderStyle = .roundedRect//在textfield的右边添加了button按钮来显示是否显示密码self.createEyeBtn()}}
extension MyTextField{func createEyeBtn() {let eyesButton = UIButton(type: .system)eyesButton.frame = CGRect(x: -50, y: 0, width: 16, height: 16)let eyeImageFalse = UIImage(systemName: "eye.slash")eyesButton.setImage(eyeImageFalse, for: .normal)
//        eyesButton.backgroundColor = UIColor.gray
//        eyesButton.tintColor = UIColor.blackrightView = eyesButtonrightViewMode = .alwayseyesButton.addTarget(self, action: #selector(action(btn:)), for: .touchUpInside)eyesButton.tag = 1}@objc func action(btn:UIButton) {let eyeImageFalse = UIImage(systemName: "eye.slash")let eyeImageTrue = UIImage(systemName: "eye")if btn.tag == 0 {btn.setImage(eyeImageFalse, for: .normal)self.isSecureTextEntry = truebtn.tag = 1}else{btn.setImage(eyeImageTrue, for: .normal)self.isSecureTextEntry = falsebtn.tag = 0}}override func rightViewRect(forBounds bounds: CGRect) -> CGRect {var rect = super.rightViewRect(forBounds: bounds)rect.origin.x = self.frame.size.width - 32 // 要往右偏多少根据自己需求，改变这个数字就好return rect}}