IOS开发系列之Swift_UI_TextFIeld

import UIKit

class ViewController: UIViewController,UITextFieldDelegate{

var exampleTextField : UITextField!

override func viewDidLoad() {

super.viewDidLoad()

//初始化textField

self.exampleTextField = UITextField.init()

self.exampleTextField.frame = CGRectMake(20, 100, 300, 30)

self.exampleTextField.placeholder = "占位符啊"

self.exampleTextField.delegate = self

self.exampleTextField.borderStyle = UITextBorderStyle.RoundedRect

/*

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

*/

self.exampleTextField.adjustsFontSizeToFitWidth=true //当文字超出文本框宽度时，自动调整文字大小

self.exampleTextField.minimumFontSize=14 //最小可缩小的字号

/** 水平对齐 **/

self.exampleTextField.textAlignment = .Right //水平右对齐

//Center //水平居中对齐

//Left //水平左对齐

/** 垂直对齐 **/

self.exampleTextField.contentVerticalAlignment = .Top //垂直向上对齐

//Center //垂直居中对齐

//Bottom //垂直向下对齐

self.exampleTextField.clearButtonMode=UITextFieldViewMode.WhileEditing //编辑时出现清除按钮

//self.exampleTextField.clearButtonMode=UITextFieldViewMode.UnlessEditing //编辑时不出现，编辑后才出现清除按钮

//self.exampleTextField.clearButtonMode=UITextFieldViewMode.Always //一直显示清除按钮

self.exampleTextField.keyboardType = UIKeyboardType.NumberPad

/*

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：显示便于输入数字的虚拟键盘

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

*/

self.exampleTextField.returnKeyType = .Search

/*

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

*/

self.view .addSubview(self.exampleTextField)

// Do any additional setup after loading the view, typically from a nib.

}

func textFieldDidBeginEditing(textField: UITextField) {

print("\(textField.text)")

}

func textFieldShouldReturn(textField: UITextField) -> Bool {

print("\(textField.text)")

var str : String

str = textField.text!

print("\(str)")

self.exampleTextField.resignFirstResponder()//收起键盘

return false

}

override func didReceiveMemoryWarning() {

super.didReceiveMemoryWarning()

// Dispose of any resources that can be recreated.

}

}