Flutter获取焦点

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已于 2022-05-18 13:29:56 修改 · 2.3k 阅读

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#flutter #android

于 2022-05-17 19:24:20 首次发布

Flutter中获取焦点的方法

import 'package:flutter/material.dart';
class MyTextFiled extends StatefulWidget{
  @override
  State<StatefulWidget> createState() {
    // TODO: implement createState
  }
}

class _MyTextFiled extends State<MyTextFiled>{

  TextEditingController _editController;
  FocusNode _editFocusNode;

  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    _editController = new TextEditingController();
    _editFocusNode = new FocusNode();

    WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
      FocusScope.of(context).requestFocus(_editFocusNode); // 自动聚焦
      FocusScope.of(context).requestFocus(FocusNode());//去除焦点
    });

  }
  @override
  Widget build(BuildContext context) {
    // TODO: implement build
    return Scaffold(
      appBar: AppBar(title: Text('look'),),
      body: Container(
        margin: EdgeInsets.only(top: 50.0),
        width: 400.0,
        height: 45.0,
        child: Text