text form field flutter

TextField(
              onChanged: (value) {
                //Do something with the user input.
              },
              decoration: InputDecoration(
                hintText: 'Enter your password.',
                contentPadding:
                    EdgeInsets.symmetric(vertical: 10.0, horizontal: 20.0),
                border: OutlineInputBorder(
                  borderRadius: BorderRadius.all(Radius.circular(32.0)),
                ),
                enabledBorder: OutlineInputBorder(
                  borderSide:
                      BorderSide(color: Colors.lightBlueAccent, width: 1.0),
                  borderRadius: BorderRadius.all(Radius.circular(32.0)),
                ),
                focusedBorder: OutlineInputBorder(
                  borderSide:
                      BorderSide(color: Colors.lightBlueAccent, width: 2.0),
                  borderRadius: BorderRadius.all(Radius.circular(32.0)),
                ),
              ),
            ),

TextField(
  decoration: InputDecoration(
    border: InputBorder.none,
    hintText: 'Enter a search term'
  ),
);

TextFormField(
  decoration: InputDecoration(
    labelText: 'Enter your username'
  ),
);

import "package:flutter/material.dart"; 
  
void main() => runApp(MyApp()); 
  
class MyApp extends StatelessWidget { 
  @override 
  Widget build(BuildContext context) { 
    return MaterialApp( 
      home: Home(), 
    ); 
  } 
} 
  
class Home extends StatefulWidget { 
  @override 
  _HomeState createState() => _HomeState(); 
} 
  
class _HomeState extends State<Home> { 
  // var to store 
  // onChanged callback 
  String title;   
  String text = "No Value Entered"; 
  
  void _setText() { 
    setState(() { 
      text = title; 
    }); 
  } 
  
  @override 
  Widget build(BuildContext context) { 
    return Scaffold( 
      appBar: AppBar( 
        title: Text('GeeksforGeeks'), 
        backgroundColor: Colors.green, 
      ), 
      body: Column( 
        children: [ 
          Padding( 
            padding: const EdgeInsets.all(15), 
            child: TextField( 
              decoration: InputDecoration(labelText: 'Title'), 
                
              onChanged: (value) => title = value,  
                
            ), 
          ), 
          SizedBox( 
            height: 8, 
          ), 
          RaisedButton( 
            onPressed: _setText, 
            child: Text('Submit'), 
            elevation: 8, 
          ), 
          SizedBox( 
            height: 20, 
          ), 
          Text(text),   
          // changes in text  
          // are shown here 
        ], 
      ), 
    ); 
  } 
}