Swift UITextField各种属性的设置

//MARK: 文本输入框

func _initTextField() {

//如果需要在模拟器中调用电脑的键盘 快捷键：command + shift + k

let textField = UITextField(frame: CGRect(x: 100, y: 100, width: 200, height: 30))

textField.backgroundColor = UIColor.redColor()

textField.tag = 100

textField.delegate = self

self.view.addSubview(textField)

//设置输入框的边框样式 默认无边框

textField.borderStyle = UITextBorderStyle.RoundedRect

//设置输入文本的字体

textField.font = UIFont.boldSystemFontOfSize(10)

//设置文字的颜色

textField.textColor = UIColor.greenColor()

//设置或获取输入框中的内容

// textField.text = "hehe"

//设置对齐方式

textField.textAlignment = NSTextAlignment.Center

//设置首字母是否自动大写

textField.autocapitalizationType = UITextAutocapitalizationType.Words

//设置自动单词提示

textField.autocorrectionType = UITextAutocorrectionType.Yes

//输入框为空时的提示文本

textField.placeholder = "请输入登陆邮箱"

//修改键盘上的return按钮上的标题

textField.returnKeyType = UIReturnKeyType.Next

//输入框是否安全输入

textField.secureTextEntry = true

//数字键盘

// textField.keyboardType = UIKeyboardType.NumberPad

//开启清楚按钮

textField.clearButtonMode = UITextFieldViewMode.WhileEditing

// //成为第一响应者，弹出键盘

textField.becomeFirstResponder()

//

// //失去第一响应者,收起键盘

// textField.resignFirstResponder()

let btn = UIButton(type: UIButtonType.ContactAdd)

btn.frame = CGRect(x: 0, y: 100, width: 50, height: 50)

btn.addTarget(self, action: "btnClick:", forControlEvents: UIControlEvents.TouchUpInside)

self.view.addSubview(btn)

}

func btnClick(btn: UIButton) {

//失去第一响应者

let textField = self.view.viewWithTag(100) as! UITextField

textField.resignFirstResponder()

}

//MARK: UITextFieldDelegate

//将要开始编辑

func textFieldShouldBeginEditing(textField: UITextField) -> Bool {

print("将要开始编辑")

//返回true表示继续编辑，返回false是阻止编辑

return true

}

//开始编辑

func textFieldDidBeginEditing(textField: UITextField) {

print("开始编辑")

}

//结束编辑时调用的协议方法

func textFieldDidEndEditing(textField: UITextField) {

print("已经结束")

}

//输入框的内容被修改时调用的协议方法

func textField(textField: UITextField, shouldChangeCharactersInRange range: NSRange, replacementString string: String) -> Bool {

print("range is \(range), string is \(string)")

return true

}