Styjun

I have hese snippet for a login screen and these codes arent displaying when i launch the app on the android device

here the error on the console I/flutter (12389): ══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═════════════════════════════════════════════════════════
I/flutter (12389): The following assertion was thrown during performLayout():
I/flutter (12389): BoxConstraints forces an infinite width.
I/flutter (12389): These invalid constraints were provided to RenderAnimatedOpacity's layout() function by the
I/flutter (12389): following function, which probably computed the invalid constraints in question:

 import 'package:flutter/material.dart';

class UserEmail extends StatefulWidget
 @override
 State<StatefulWidget> createState() 
 return UserEmailState();
 



class UserEmailState extends State<UserEmail> 

 final TextEditingController _emailController = new TextEditingController();

 @override
 Widget build(BuildContext context) 
 return Scaffold(
 appBar: new AppBar(
 backgroundColor: Colors.transparent,
 elevation: 0.0,
 ),

 body: ListView(
 children: <Widget>[
 Padding(
 padding: const EdgeInsets.all(16.0),
 child: SizedBox(
 child: new Row(
 children: <Widget>[
 Text("Welcome",
 style: TextStyle(color: Colors.black,fontWeight: FontWeight.bold
 ),),
 Text("A short slogan about the app...")
 ],
 ),
 ),
 ),

 Padding(
 padding: const EdgeInsets.all(24.0),
 child: SizedBox(
 child: Column(
 children: <Widget>[
 Row(
 children: <Widget>[
 TextField(
 controller: _emailController,
 decoration: new InputDecoration(
 labelText: "Email",
 hintText: "Enter email address"
 ),
 )
 ],
 ),

 Padding(
 padding: const EdgeInsets.all(8.0),
 child: new RaisedButton(
 onPressed: null,
 textColor: Colors.white,
 color: Colors.blueGrey,
 padding: const EdgeInsets.all(8.0),
 child: new Text(
 "Continue")
 ),
 ),
 ],
 ),
 ),
 )
 ],
 ),
 );
 

wrap your TextField inside an Expanded or Flexible widget. Like this:

 Flexible(
 child: TextField(
 controller: _emailController,
 decoration: new InputDecoration(
 labelText: "Email",
 hintText: "Enter email address"
 ),
 ),
 )