构造方法
const TextField({ Key key, this.controller, ////控制器,控制TextField文字 this.focusNode, this.decoration = const InputDecoration(), //输入器装饰 TextInputType keyboardType, ////输入的类型 this.textInputAction, this.textCapitalization = TextCapitalization.none, this.style, this.textAlign = TextAlign.start, //文字显示位置 this.autofocus = false, this.obscureText = false, this.autocorrect = true, this.maxLines = 1, this.maxLength, this.maxLengthEnforced = true, this.onChanged, //文字改变触发 this.onEditingComplete, this.onSubmitted, ////文字提交触发(键盘按键) this.inputFormatters, this.enabled, this.cursorWidth = 2.0, this.cursorRadius, this.cursorColor, this.keyboardAppearance, this.scrollPadding = const EdgeInsets.all(20.0), })1.decoration
输入器装饰
const InputDecoration({ this.icon, this.labelText, this.labelStyle, this.helperText, this.helperStyle, this.hintText, this.hintStyle, this.errorText, this.errorStyle, this.errorMaxLines, this.isDense, this.contentPadding, this.prefixIcon, this.prefix, this.prefixText, this.prefixStyle, this.suffixIcon, this.suffix, this.suffixText, this.suffixStyle, this.counterText, this.counterStyle, this.filled, this.fillColor, this.errorBorder, this.focusedBorder, this.focusedErrorBorder, this.disabledBorder, this.enabledBorder, this.border, this.enabled = true, this.semanticCounterText, })①labelText
labelText: '请你输入姓名', labelStyle: new TextStyle( fontSize: 13.0, color: Colors.amberAccent),效果如图:
无焦点
有焦点
②hintText
和android正常hint一样
hintText: '请输入姓名', hintStyle: new TextStyle(fontSize: 13.0, color: Colors.pink),如图
③errorText和helperText
提示性的文本
labelText: '请你输入姓名', labelStyle: new TextStyle( fontSize: 13.0, color: Colors.amberAccent), helperText: '嘻嘻嘻',
④icon
icon可以是自带的Icon也可以是自己的图片
// icon: new Image.asset('images/goods_image.png', width: 30.0, height: 30.0,), icon: new Icon(Icons.person), labelText: '请你输入姓名', labelStyle: new TextStyle(fontSize: 13.0, color: Colors.amberAccent), helperText: '嘻嘻嘻',
⑤contentPadding
内容的边距,默认是有一个边距的
// icon: new Image.asset('images/goods_image.png', width: 30.0, height: 30.0,), icon: new Icon(Icons.person), labelText: '请你输入姓名', labelStyle: new TextStyle(fontSize: 13.0, color: Colors.amberAccent), helperText: '嘻嘻嘻', contentPadding: new EdgeInsets.all(0.0)
⑥prefixIcon
在上面的代码基础之上加下面的代码
prefixIcon: new Icon(Icons.people)
⑦prefixText(同上---icon换成文本)
prifix(同上一样,他的参数是widget,可以是文本,图片,图片文本的组合container,自己随便组合)
⑧suffixText,suffixIcon,suffix (后缀,用法同prefix一样)
⑨border
InputBorder.none--------------无border,下划线也没了
UnderlineInputBorder--------下划线
OutlineInputBorder-----------周围都有border,一个框
2. TextInputType keyboardType
键盘输入类型(数字,文本等各种类型)
3. controller
文本控制器
import 'package:flutter/material.dart'; class FourPage extends StatelessWidget { //手机号的控制器 TextEditingController phoneController = TextEditingController(); //密码的控制器 TextEditingController passController = TextEditingController(); @override Widget build(BuildContext context) { return new Scaffold( appBar: new AppBar(title: new Text('第四个界面'),), body: new Container( // color: Colors.pink, margin: new EdgeInsets.all(10.0), child: new Column( children: <Widget>[ TextField( controller: phoneController, keyboardType: TextInputType.number, decoration: InputDecoration( contentPadding: EdgeInsets.all(10.0), icon: Icon(Icons.phone), labelText: '请输入你的用户名)', helperText: '请输入注册的手机号', ), autofocus: false, ), TextField( controller: passController, keyboardType: TextInputType.number, decoration: InputDecoration( contentPadding: EdgeInsets.all(10.0), icon: Icon(Icons.lock), labelText: '请输入密码)', ), obscureText: true), RaisedButton( onPressed: _login, child: Text('登录'), ), ], ), ), ); } void _login() { print({'手机号': phoneController.text, '密码': passController.text}); phoneController.clear(); } }
此外,Row包含Textfield时错误的解决办法
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