GitHub：github.com/jixiang0903/swift-UITextField
override func viewDidLoad() {
super.viewDidLoad()
//1.文本框的创建，有如下几个样式：
// UITextBorderStyle.none：无边框
// UITextBorderStyle.line：直线边框
// UITextBorderStyle.roundedRect：圆角矩形边框
// UITextBorderStyle.bezel：边线+阴影
let textField = UITextField(frame:CGRect(x:10, y:60, width:200, height:30))
//设置边框样式为圆角矩形
textField.borderStyle = UITextBorderStyle.roundedRect
//字体属性设置
textField.textColor = UIColor.black
textField.font = UIFont(name:"GillSans",size:15)
textField.textAlignment = NSTextAlignment.left
/** 垂直对齐 **/
//textField.contentVerticalAlignment = .top //垂直向上对齐
textField.contentVerticalAlignment = .center //垂直居中对齐
//textField.contentVerticalAlignment = .bottom //垂直向下对齐
//文本框提示文字
textField.placeholder = "请输入文字"
//明文显示
textField.isSecureTextEntry = false
//光标颜色
textField.tintColor = UIColor.green
//文字大小超过文本框长度时自动缩小字号，而不是隐藏显示省略号
//textField.adjustsFontSizeToFitWidth = true//当文字超出文本框宽度时，自动调整文字大小
//textField.minimumFontSize = 12//最小可缩小的字号
//是否可操作
textField.isEnabled = true
textField.isUserInteractionEnabled = true
//背景图片设置
textField.borderStyle = .none//先要去除边框样式,否则无效
textField.background = UIImage(named:"daohanglan_touming@2x")
//清除按钮（输入框内右侧小叉）
textField.clearButtonMode = .whileEditing
//设置文本框关联的键盘类型
// Default：系统默认的虚拟键盘
// ASCII Capable：显示英文字母的虚拟键盘
// Numbers and Punctuation：显示数字和标点的虚拟键盘
// URL：显示便于输入url网址的虚拟键盘
// Number Pad：显示便于输入数字的虚拟键盘
// Phone Pad：显示便于拨号呼叫的虚拟键盘
// Name Phone Pad：显示便于聊天拨号的虚拟键盘
// Email Address：显示便于输入Email的虚拟键盘
// Decimal Pad：显示用于输入数字和小数点的虚拟键盘
// Twitter：显示方便些Twitter的虚拟键盘
// Web Search：显示便于在网页上书写的虚拟键盘
textField.keyboardType = .default
//使文本框在界面打开时就获取焦点，并弹出输入键盘(第一响应着)
textField.becomeFirstResponder()
//使文本框失去焦点，并收回键盘
//textField.resignFirstResponder()
//设置键盘return键的样式
// textField.returnKeyType = UIReturnKeyType.done //表示完成输入
// textField.returnKeyType = UIReturnKeyType.go //表示完成输入，同时会跳到另一页
// textField.returnKeyType = UIReturnKeyType.search //表示搜索
// textField.returnKeyType = UIReturnKeyType.join //表示注册用户或添加数据
// textField.returnKeyType = UIReturnKeyType.next //表示继续下一步
// textField.returnKeyType = UIReturnKeyType.send //表示发送
textField.returnKeyType = .send
//设置代理
textField.delegate = self
// 自定义输入源控件
// let inputview = UIButton(frame: CGRect(x:0.0, y:0.0, width:self.view.bounds.width, height:100.0))
// inputview.setImage(UIImage(named: "daohanglan_touming@2x"), for: UIControlState.normal)
// inputview.backgroundColor = UIColor.lightGray
// inputview.addTarget(self, action: Selector(click:), for: UIControlEvents.touchUpInside)
// textField.inputView = inputview
// 自定义输入源控件副视图
let accessoryview = UIView(frame: CGRect(x:0.0, y:0.0, width:self.view.frame.size.width, height:40.0))
accessoryview.backgroundColor = UIColor.green
let accessoryLeft = UIButton(frame: CGRect(x:10.0, y:10.0, width:60.0, height:20.0))
accessoryview.addSubview(accessoryLeft)
accessoryLeft.setTitle("取消", for: UIControlState.normal)
accessoryLeft.backgroundColor = UIColor.orange
accessoryLeft.addTarget(self, action: #selector(leftClick), for: UIControlEvents.touchUpInside)
let accessoryRight = UIButton(frame: CGRect(x:(accessoryview.bounds.width - 10.0 - 60.0), y:10.0, width:60.0, height:20.0))
accessoryview.addSubview(accessoryRight)
accessoryRight.setTitle("确定", for: UIControlState.normal)
accessoryRight.backgroundColor = UIColor.orange
accessoryRight.addTarget(self, action: #selector(rightClick), for: UIControlEvents.touchUpInside)
textField.inputAccessoryView = accessoryview
// 发通知-输入改变
NotificationCenter.default.addObserver(self, selector: #selector(textFiledEditChanged), name: NSNotification.Name.UITextFieldTextDidChange, object: textField)
self.view.addSubview(textField)
}
//键盘return按钮点击事件
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
//收起键盘
//textField.resignFirstResponder()
self.view .endEditing(true)
print(textField.text!)
return true;
}
// 自定义输入源控件时响应事件
// MARK: - click
func click(button:UIButton)
{
self.view.endEditing(true)
}
//MARK: - left/right click
func leftClick(button:UIButton)
{
print("取消")
}
func rightClick(button:UIButton)
{
self.view.endEditing(true)
print("确定")
}
// 通知响应方法-限制输入长度
// MARK: - 通知响应方法
func textFiledEditChanged(notification:NSNotification)
{
let textField:UITextField! = notification.object as! UITextField
if (textField != nil)
{
let text:String! = textField.text
let length = text.characters.count
if (length > 20)
{
}
}
}
// 代理方法
// MARK: - UITextFieldDelegate
func textFieldShouldBeginEditing(_ textField: UITextField) -> Bool {
print("1 textFieldShouldBeginEditing")
return true
}
func textFieldDidBeginEditing(_ textField: UITextField) {
print("2 textFieldDidBeginEditing")
}
func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
print("3 textField")
return true
}
func textFieldShouldEndEditing(_ textField: UITextField) -> Bool {
print("4 textFieldShouldEndEditing")
print("text：\(String(describing: textField.text)) length = \(String(describing: textField.text?.characters.count))")
return true
}
func textFieldDidEndEditing(_ textField: UITextField) {
print("5 textFieldDidEndEditing")
}
func textFieldShouldClear(_ textField: UITextField) -> Bool {
print("6 textFieldShouldClear")
return true
}
func textFieldShouldReturn(textField: UITextField) -> Bool {
// 结束编辑
textField.resignFirstResponder()
print("7 textFieldShouldReturn")
return true
}
