当我单击编辑它时，我的文本字段隐藏在 BottomNavigationBar 的键盘后面

Question

Im new to flutter. I am stuck at one place and I can't find the exact solution.

I have a BottomNavigationBar in which I have a textfield that needs input from the user. When I click on the textfield the keyboard covers up the whole half screen and textfield hides behind the keyboard and can't be seen. I want to move the textfield above the keyboard for better UI for the user.

this is the BottomNavigationBar code:

Widget build(BuildContext context) {
return Container(
  color: Colors.grey[200],
  height: 70,
  child: Row(
    children: <Widget>[
      SizedBox(
        height: MediaQuery.of(context).viewInsets.bottom,
      ),
      Container(
        width: MediaQuery.of(context).size.width * 0.6,
        color: Colors.transparent,
        margin: EdgeInsets.fromLTRB(40, 0, 0, 0),
        child: TextField(  //this is the TextField
          style: TextStyle(
            fontSize: 30,
            fontFamily: 'Karla',
          ),
          decoration: InputDecoration.collapsed(
            hintText: 'Experimez-vous...',
            hintStyle: TextStyle(color: Colors.black),
          ),
        ),
      ),
    ],
  ),
);

This is the main body (Scaffold) Im calling it from:

return Scaffold(
  body: Column(
    children: <Widget>[
      CloseButtonScreen(),
      Container(
        color: Colors.transparent,
        child: HeaderContent(),
      ),
      ContainerListItems(),
    ],
  ),
  bottomNavigationBar: BottomNavBar(), //this is where Im calling my BottomNavigationBar from
  floatingActionButton: FloatingActionBtn(),
  floatingActionButtonLocation: FloatingActionButtonLocation.endDocked,
  resizeToAvoidBottomPadding: false,
);

screenshots:

the textfield is behind the keyboard in bottomnavigationbar

EXPERIMEZ VOUS the texfield

Answer 1

After a lot of struggling this is how I achieved it. Thanks everyone for contributing.

return Scaffold(
  body: GestureDetector(
    onTap: () => {
      FocusScope.of(context).unfocus(),
    },
    child: SingleChildScrollView(
      child: Container(
        width: MediaQuery.of(context).size.width,
        height: MediaQuery.of(context).size.height,
        child: Column(
          children: <Widget>[
            CloseButtonScreen(),
            Container(
              color: Colors.transparent,
              child: HeaderContent(),
            ),
            ContainerListItems(),
            Container(
              margin: EdgeInsets.only(top: 90),
              padding: EdgeInsets.only(left: 20),
              color: Colors.transparent,
              width: MediaQuery.of(context).size.width,
              child: TextFormField(
                style: TextStyle(
                  fontSize: 30,
                  fontFamily: 'Karla',
                ),
                decoration: InputDecoration.collapsed(
                  hintText: 'Experimez-vous...',
                  hintStyle: TextStyle(
                    color: Color(0xff2e3039),
                  ),
                ),
              ),
            ),
          ],
        ),
      ),
    ),
  ),
);

ignore the GestureDetector() widget. Yes you have to wrap the body into SingleChildScrollView(), I was using bottomNavigationBar, had to finish that. Everyone contributed to my question were right. I just had to join the puzzle pieces accordingly.

I had to delete BottomNavigation File and include the code in the main body within a container.

Answer 2

You can achieve it simply like this:

return Scaffold(
  appBar: AppBar(title: Text('Your title')),
  body: Column(
    children: [
      Expanded(
        child: Text('Add things that will be shown in the body'),
      ),
      //here comes your text field and will be shown at the bottom of the page
      TextField(),
    ],
  ),
);

Answer 3

Place all your widgets inside SingleChildScrollView widget.

UPDATED: Using Stack instead of BottomNavigationBar to show textfield

Answer 4

Wrapping it inside the SingleChildScrollView will allow your widget to slide up when keyboards appears.

Scaffold(
  body: SingleChildScrollView(
   child: Column(
      children: <Widget>[
        CloseButtonScreen(),
        Container(
          color: Colors.transparent,
          child: HeaderContent(),
        ),
        ContainerListItems(),
     ],
   ),
 ),
...
);

Answer 5

Just placed you every widget in ListView and use shrinkWrap property. Sample Code below:

return Scaffold(
  backgroundColor: Colors.white,
  body: new Container(
    child: new ListView(
      shrinkWrap: true,
      padding: EdgeInsets.only(left: 12.0, right: 12.0),
      children: <Widget>[
        widget1,
        SizedBox(height: 20.0),
        widget2,
        SizedBox(height: 20.0),
        widget3,
      ],
    ),
  ),
);    

Answer 6

In case this can help somebody else, adding a padding to the bottom of the container nicely keeps the bottonnavbar on top of the keyboard.

add this padding: padding: EdgeInsets.only(bottom: MediaQuery.of(context).viewInsets.bottom)

Widget build(BuildContext context) {
return Container(
  padding: EdgeInsets.only(bottom: MediaQuery.of(context).viewInsets.bottom)
  color: Colors.grey[200],
  height: 70,
  child: Row(
    children: <Widget>[
      SizedBox(
        height: MediaQuery.of(context).viewInsets.bottom,
      ),
      Container(
        width: MediaQuery.of(context).size.width * 0.6,
        color: Colors.transparent,
        margin: EdgeInsets.fromLTRB(40, 0, 0, 0),
        child: TextField(  //this is the TextField
          style: TextStyle(
            fontSize: 30,
            fontFamily: 'Karla',
          ),
          decoration: InputDecoration.collapsed(
            hintText: 'Experimez-vous...',
            hintStyle: TextStyle(color: Colors.black),
          ),
        ),
      ),
    ],
  ),
);