Created
September 13, 2020 14:51
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TextField and TextFormField
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| import 'package:flutter/material.dart'; | |
| void main() { | |
| runApp(MyApp()); | |
| } | |
| class MyApp extends StatelessWidget { | |
| // This widget is the root of your application. | |
| @override | |
| Widget build(BuildContext context) { | |
| return MaterialApp( | |
| title: 'Flutter Demo', | |
| theme: ThemeData( | |
| primarySwatch: Colors.blue, | |
| visualDensity: VisualDensity.adaptivePlatformDensity, | |
| ), | |
| home: MyHomePage(), | |
| ); | |
| } | |
| } | |
| class MyHomePage extends StatefulWidget { | |
| @override | |
| _MyHomePageState createState() => _MyHomePageState(); | |
| } | |
| class _MyHomePageState extends State<MyHomePage> { | |
| bool _secureText = true; | |
| TextEditingController _passwordController = TextEditingController(); | |
| String _passwordError; | |
| var _formKey = GlobalKey<FormState>(); | |
| @override | |
| Widget build(BuildContext context) { | |
| return Scaffold( | |
| appBar: AppBar( | |
| title: Text("TextField Demo"), | |
| ), | |
| body: Padding( | |
| padding: const EdgeInsets.all(8.0), | |
| child: SingleChildScrollView( | |
| child: Column( | |
| children: [ | |
| TextField( | |
| decoration: InputDecoration( | |
| hintText: "Your Name", | |
| labelText: "Name", | |
| labelStyle: TextStyle(fontSize: 24, color: Colors.black), | |
| border: InputBorder.none, | |
| fillColor: Colors.black12, | |
| filled: true), | |
| obscureText: false, | |
| maxLength: 20, | |
| ), | |
| SizedBox( | |
| height: 16, | |
| ), | |
| TextField( | |
| decoration: InputDecoration( | |
| hintText: "Detailed Description", | |
| labelText: "Description", | |
| labelStyle: TextStyle(fontSize: 24, color: Colors.black), | |
| border: UnderlineInputBorder()), | |
| obscureText: false, | |
| maxLines: 3, | |
| ), | |
| SizedBox( | |
| height: 16, | |
| ), | |
| TextField( | |
| controller: _passwordController, | |
| decoration: InputDecoration( | |
| hintText: "Password", | |
| labelText: "Password", | |
| errorText: _passwordError, | |
| labelStyle: TextStyle(fontSize: 24, color: Colors.black), | |
| border: OutlineInputBorder(), | |
| suffixIcon: IconButton( | |
| icon: Icon( | |
| _secureText ? Icons.remove_red_eye : Icons.security), | |
| onPressed: () { | |
| setState(() { | |
| _secureText = !_secureText; | |
| }); | |
| }, | |
| )), | |
| obscureText: _secureText, | |
| ), | |
| SizedBox( | |
| height: 16, | |
| ), | |
| Form( | |
| key: _formKey, | |
| child: Column( | |
| children: [ | |
| TextFormField( | |
| validator: (String value){ | |
| if(value.length < 10) | |
| return "Enter at least 10 char"; | |
| else | |
| return null; | |
| }, | |
| decoration: InputDecoration( | |
| hintText: "Name", | |
| labelText: "Name", | |
| labelStyle: TextStyle(fontSize: 24, color: Colors.black), | |
| border: OutlineInputBorder()), | |
| ), | |
| SizedBox( | |
| height: 16, | |
| ), | |
| TextFormField( | |
| validator: (String value){ | |
| if(value.length < 3) | |
| return "Enter at least 3 char"; | |
| else | |
| return null; | |
| }, | |
| decoration: InputDecoration( | |
| hintText: "Password", | |
| labelText: "Password", | |
| labelStyle: TextStyle(fontSize: 24, color: Colors.black), | |
| border: OutlineInputBorder()), | |
| obscureText: true, | |
| ), | |
| ], | |
| )), | |
| SizedBox( | |
| height: 16, | |
| ), | |
| RaisedButton(onPressed: () { | |
| print("Password : " + _passwordController.text); | |
| setState(() { | |
| print("Form Validation : " + _formKey.currentState.validate().toString()); | |
| if(_passwordController.text.length < 3) | |
| _passwordError = "Enter at least 3 char"; | |
| else | |
| _passwordError = null; | |
| }); | |
| }) | |
| ], | |
| ), | |
| ), | |
| ), | |
| ); | |
| } | |
| } |
Your video was great, it will help me a lot in my college work! Very good.
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Nice work