如何解除屏幕上的键盘?

我用TextFormField收集用户输入，当用户按下FloatingActionButton表示他们已经完成时，我想解散屏幕上的键盘。

如何让键盘自动消失?

import 'package:flutter/material.dart';

class MyHomePage extends StatefulWidget {
  MyHomePageState createState() => new MyHomePageState();
}

class MyHomePageState extends State<MyHomePage> {
  TextEditingController _controller = new TextEditingController();

  @override
  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(),
      floatingActionButton: new FloatingActionButton(
        child: new Icon(Icons.send),
        onPressed: () {
          setState(() {
            // send message
            // dismiss on screen keyboard here
            _controller.clear();
          });
        },
      ),
      body: new Container(
        alignment: FractionalOffset.center,
        padding: new EdgeInsets.all(20.0),
        child: new TextFormField(
          controller: _controller,
          decoration: new InputDecoration(labelText: 'Example Text'),
        ),
      ),
    );
  }
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      home: new MyHomePage(),
    );
  }
}

void main() {
  runApp(new MyApp());
}

当前回答

_dismissKeyboard(BuildContext context) {
   FocusScope.of(context).requestFocus(new FocusNode());
}

@override
Widget build(BuildContext context) {

return new GestureDetector(
    onTap: () {
    this._dismissKeyboard(context);
    },
    child: new Container(
    color: Colors.white,
    child: new Column(
        children: <Widget>[/*...*/],
    ),
    ),
 );
}

2019-08-14 13:19:14

其他回答

你可以用"GestureDetector"来包装你的小部件，然后将"FocusScope.of(context).unfocus()"赋值给它的onTap函数

GestureDetector(
 onTap: () => FocusScope.of(context).unfocus(),
 child: child,
);

2021-08-09 15:56:44

你可以用这个。

FocusScope或(上下文)。requestFocus (FocusNode ());

你可以使用这个手势侦测器的onTap或者像这样的InkWell。

“GestureDetector ( onTap:() {' //这个焦点范围将关闭键盘 FocusScope.of(上下文).requestFocus (FocusNode ()); forgotPasswordAPI (emailController.text); }”、“

2022-09-29 05:29:37

在构建小部件中添加此代码

    FocusScope.of(context).requestFocus(FocusNode());

2022-10-20 15:03:34

如果你的键盘仍然不会关闭，不要忘记添加focusNode到TextField。上面的信息很有帮助，但是忘记添加focusNode让我有点困扰。这里有一个例子。

TextField(
          focusNode: FocusNode(),
          textController: _controller,
          autoFocus: false,
          textStyle: TextStyle(fontSize: 14),
          onFieldSubmitted: (text) {},
          onChanged: (text) {},
          hint: 'Enter the code',
          hintColor: CustomColors.mediumGray,
          suffixAsset: _voucherController.text.length == 7
              ? Assets.ic_approved_voucher
              : null,
          isIcon: false,
          isObscure: false,
          maxLength: 7,
        )



closeKeyboard(BuildContext context) {
    var currentFocus = FocusScope.of(context);
    if (!currentFocus.hasPrimaryFocus) {
      currentFocus.unfocus();
    }
  }

  @override
  Widget build(BuildContext context) {
    _keyboardVisible = MediaQuery.of(context).viewInsets.bottom != 0;
    size = MediaQuery.of(context).size;
    return GestureDetector(
      onTap: () {
        closeKeyboard(context);
      },
      child: Scaffold(
        backgroundColor: Colors.white,
        body: Container(
            width: double.maxFinite,
            height: double.maxFinite,
            child: _buildUI(vm)),
      ),
    );
  }

2021-10-04 13:22:34

注意:这个答案已经过时了。有关Flutter的新版本，请参阅答案。

你可以通过把TextFormField的焦点拿走，并把它给一个未使用的FocusNode来解散键盘:

FocusScope.of(context).requestFocus(FocusNode());

2017-07-09 00:44:06

如何解除屏幕上的键盘?

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