Overflow Error in Flutter when keyboard open

Question

I am designing a login page it overflowed when I click on any text form field it open keyboard and through overflow warning like this see attached image. I also want a Raised button icon should be on the right side of the button.

Widget build(BuildContext context) {
    return Container(
      child: Scaffold(
        body: Stack(
          fit: StackFit.expand,
          children: <Widget>[
            Container(
              decoration: BoxDecoration(
                  image: new DecorationImage(
                      image: new AssetImage('assets/login_page_bg_1.jpg'),
                      fit: BoxFit.cover,
                      colorFilter: new ColorFilter.mode(
                          Colors.black.withOpacity(0.55), BlendMode.dstATop))),
            ),
            Column(
              mainAxisAlignment: MainAxisAlignment.start,
              children: <Widget>[
                Expanded(
                  flex: 1,
                  child: Container(
                    margin: new EdgeInsets.only(top: 42.0),
                    child: Column(
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: <Widget>[
                        Image.asset('assets/logo.png',
                            width: 250.0, height: 200.21),
                      ],
                    ),
                  ),
                ),
                Expanded(
                  flex: 2,
                  child: Container(
                    margin: new EdgeInsets.only(bottom: 40.0),
                    child: Column(
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: <Widget>[
                        //form filed goes here
                        Text('Login As User',
                            textAlign: TextAlign.center,
                            style: TextStyle(
                                fontWeight: FontWeight.bold, fontSize: 35.0)),
                        TextFormField(
                            keyboardType: TextInputType.emailAddress,
                            decoration: InputDecoration(
                              hintText: '[email protected]',
                              labelText: 'Email Address',
                            ),
                        new Container(
                          // width: MediaQuery.of(context).size.width,
                          child: RaisedButton.icon(
                            color: Color.fromARGB(251, 188, 74, 1),
                            label: Text('LOGIN'),
                            icon: Icon(Icons.send,
                                size: 10.0, color: Colors.black),
                            onPressed: () {
                              this.submit();
                            }, ),)],),),)],)],),),);

Intital state

Error/overflowed State

CopsOnRoad · Accepted Answer · 2022-01-10 21:12:38Z

62

Set following property to false

Scaffold(
  resizeToAvoidBottomInset: false, 
  ... 
)

If you're having issues with overflow error, use SingleChildScrollView with it.

Scaffold(
  resizeToAvoidBottomInset: false, // set it to false
  body: SingleChildScrollView(child: YourBody()),
)

PS: If you like to scroll your widget when the keyboard opens, you can take a look at this answer

edited Jan 10, 2022 at 21:12

answered Aug 10, 2019 at 12:02

CopsOnRoad

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1 Comment

abulka Over a year ago

I had to set resizeToAvoidBottomInset: true for the second example above - so that SingleChildScrollView scrolling kicked in when the keyboard appears. Whereas setting the value to false means the keyboard overlays the UI and obscures things, and the scrolling didn't seem to work anymore.

Marcel Hofgesang · Accepted Answer · 2021-04-16 19:54:25Z

15

This is happening because when the keyboard comes on screen, the height of the canvas to draw decreases. One solution is to wrap your root container inside SingleChildScrollView like this :

Widget build(BuildContext context) {
return Scaffold(
      body: SingleChildScrollView(
          child: Stack(
            fit: StackFit.loose,
            children: <Widget>[
              Container(
                decoration: BoxDecoration(
                    image: new DecorationImage(
                        image: new AssetImage('assets/login_page_bg_1.jpg'),
                        fit: BoxFit.cover,
                        colorFilter: new ColorFilter.mode(
                            Colors.black.withOpacity(0.55), BlendMode.dstATop)
                            )
                ),
              ),
              Column(
                mainAxisAlignment: MainAxisAlignment.start,
                children: <Widget>[
                  SizedBox(height: 42,),
                  Expanded(
                    flex: 1,
                    child: Center(
                      child:
                        Image.asset('assets/logo.png',
                            width: 250.0, height: 200.21),
                    ),
                  ),
                  Expanded(
                    flex: 2,
                    child: Column(
                        mainAxisAlignment: MainAxisAlignment.center,
                        children: <Widget>[
                        //form filed goes here
                        Text('Login As User',
                        textAlign: TextAlign.center,
                        style: TextStyle(
                            fontWeight: FontWeight.bold, fontSize: 35.0)),
                    TextFormField(
                      keyboardType: TextInputType.emailAddress,
                      decoration: InputDecoration(
                        hintText: '[email protected]',
                        labelText: 'Email Address',
                      )
                    ),
                      new Container(
                        // width: MediaQuery.of(context).size.width,
                        child: RaisedButton.icon(
                          color: Color.fromARGB(251, 188, 74, 1),
                          label: Text('LOGIN'),
                          icon: Icon(Icons.send,
                              size: 10.0, color: Colors.black),
                          onPressed: () {
                            //this.submit();
                          }, ),)],)),
                  SizedBox(height: 40,)
            ],)],),));

It will make your screen scrollable when the height of the content gets more than the available height of the viewport.

edited Apr 16, 2021 at 19:54

Marcel Hofgesang

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answered Mar 23, 2019 at 10:14

Ryosuke

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9 Comments

Muhammad Usman Over a year ago

it through an exception I/flutter ( 2894): EXCEPTION CAUGHT BY RENDERING LIBRARY I/flutter ( 2894): The following assertion was thrown during performLayout():

Ryosuke Over a year ago

give the container a fixed width and height.

Muhammad Usman Over a year ago

on all container? because by giving width and height to the root container cause same problem

Ryosuke Over a year ago

give the root container width and height as MediaQuery.of(context).size.width and MediaQuery.of(context).size.height

Ryosuke Over a year ago

I edited my answer...now refactored the code instead of just looking at it and guessing the problem. Your code was too inefficient but I tried to keep most of it as it is.

|

Rami Alloush · Accepted Answer · 2019-06-03 16:24:39Z

8

A much simpler solution (source) seems to be just setting the Scaffold property resizeToAvoidBottomPadding to false. This works great with me:

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        resizeToAvoidBottomPadding: false,
        appBar: AppBar(...),
        body: ...

answered Jun 3, 2019 at 16:24

Rami Alloush

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1 Comment

emragins Over a year ago

FYI: resizeToAvoidBottomPadding is flagged as deprecated and it's recommended to use resizeToAvoidBottomInset instead.

Hermann Käbi · Accepted Answer · 2020-09-29 16:56:06Z

6

Add resizeToAvoidBottomPadding: false, and resizeToAvoidBottomInset: false, to your Scaffold widget.
Wrap your code with a Container, set the Container's parameters height: MediaQuery.of(context).size.height, and width: MediaQuery.of(context).size.width,. Then wrap your Container with a SingleChildScrollView.

answered Sep 29, 2020 at 16:56

Hermann Käbi

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1 Comment

Gui Silva Over a year ago

For some mystical reason, this was the only solution that worked to me. Scaffold widget was basically ignoring the resizeToAvoidBottomInset option. No idea why. Thanks man!

Zakaria Ferzazi · Accepted Answer · 2022-11-08 13:14:45Z

4

you should make the scaffold's floating widgets should size themselves to avoid the onscreen keyboard using :

Scaffold(
  resizeToAvoidBottomInset: false, 
  ... 
)

answered Nov 8, 2022 at 13:14

Zakaria Ferzazi

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Comments

Wayne Johnson · Accepted Answer · 2020-04-02 22:36:28Z

1

An even easier version is to just wrap the offending container with a ListView widget. It makes the screen scrollable and is simple to implement. You can use multiple children with this widget.

Scaffold(  
   body: ListView(
     children: <Widget> [
       Container(
       ),
       TextView(
       ),
       Column(
       ),
     ],
   ),
 )

answered Apr 2, 2020 at 22:36

Wayne Johnson

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Comments

Aknahseh_tg · Accepted Answer · 2020-10-22 15:48:55Z

1

Setting resizeToAvoidBottomInset: true and using body: ListView() works as well. This enables you to scroll the page when you open the keyboard.

answered Oct 22, 2020 at 15:48

Aknahseh_tg

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