小编Akb*_*tov的帖子

将 .gradle 文件夹包含到我的 gitignore 中是否安全？如果是这样，为什么它不包含在flutter create myapp 命令生成的默认 gitignore 文件中？

/.gitignore:

# Miscellaneous
*.class
*.log
*.pyc
*.swp
.DS_Store
.atom/
.buildlog/
.history
.svn/

# IntelliJ related
*.iml
*.ipr
*.iws
.idea/

# The .vscode folder contains launch configuration and tasks you configure in
# VS Code which you may wish to be included in version control, so this line
# is commented out by default.
#.vscode/

# Flutter/Dart/Pub related
**/doc/api/
**/ios/Flutter/.last_build_id
.dart_tool/
.flutter-plugins
.flutter-plugins-dependencies
.packages
.pub-cache/
.pub/
/build/

# Web …

我想用 TextField 实现这个动画：

但得到这个：

这是我的 TextField 小部件：

import 'package:flutter/material.dart'; import 'package:line_awesome_flutter/line_awesome_flutter.dart'; import 'package:move_me_delivery/data/styles.dart';

class SearchTextField extends StatefulWidget {   const SearchTextField({Key? key,
    this.onFocusChange,
    this.focus,
    this.onCancel,
    this.inputDecoration   }) : super(key: key);

  final void Function(bool hasFocus)? onFocusChange;   final FocusNode? focus;   final VoidCallback? onCancel;   final InputDecoration? inputDecoration;




  @override   _SearchTextFieldState createState() =>
_SearchTextFieldState(); }

class _SearchTextFieldState extends State<SearchTextField> {   FocusNode _focus = new FocusNode();

  @override   void initState() {
    super.initState();
    _focus = widget.focus ?? new FocusNode();
    _focus.addListener(
      (){
        if(widget.onFocusChange != null){
          widget.onFocusChange!(_focus.hasFocus);
        }
      }
    );   } …

我想实现这个目标：

但是当英雄动画开始时，键盘被迫关闭：

我尝试使用布局后触发的小部件回调。但只要英雄动画开始，就会触发此回调。我也尝试使用Future.delayed(Duration(seconds: 2)，但没有帮助。如果我只从小部件树中删除 Hero 小部件，一切都会按预期工作。

这是我的第一个屏幕：

import 'package:flutter/material.dart';
import 'package:move_me_delivery/components/rounded_app_bar.dart';
import 'package:move_me_delivery/components/search_field.dart';
import '../screens.dart';

class HomeTab extends StatelessWidget {
  const HomeTab({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: RoundedAppBar(title: ""),
      body: Padding(
        padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 32),
        child: Column(
          children: [
            SearchTextField(
              onFocusChange: (val) async {
                if(val){
                  await Navigator.push(context, PageRouteBuilder(
                    transitionDuration: Duration(milliseconds: 400),
                    pageBuilder: (_, __, ___) => SearchScreen()));
                }
              },

            )
          ],
        ),
      )
    );
  }
}

这是我的第二个屏幕：

import 'package:flutter/material.dart'; …