我是Flutter的初学者,我刚刚开始关注他们的Name Generator应用程序教程并构建一个简单的名称生成应用程序。我想知道当用户点击名称时是否可以添加复制到剪贴板功能?我试图实现我在堆栈上找到的解决方案,但它没有用。我的完整代码就在这里。任何建议表示赞赏。
import 'package:flutter/material.dart';
import 'package:english_words/english_words.dart';
void main() => runApp(new MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return new MaterialApp(
title: 'Startup Name Generator',
home: new RandomWords(),
);
}
}
class RandomWords extends StatefulWidget {
@override
RandomWordsState createState() => new RandomWordsState();
}
class RandomWordsState extends State<RandomWords> {
final List<WordPair> _suggestions = <WordPair>[];
final Set<WordPair> _saved = new Set<WordPair>();
final TextStyle _biggerFont = const TextStyle(fontSize: 18.0);
@override
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: const Text('Startup Name Generator'),
actions: <Widget>[
new IconButton(icon: const Icon(Icons.list), onPressed: _pushSaved),
],
),
body: _buildSuggestions(),
);
}
Widget _buildSuggestions() {
return new ListView.builder(
padding: const EdgeInsets.all(16.0),
itemBuilder: (BuildContext _context, int i) {
if (i.isOdd) {
return const Divider();
}
final int index = i ~/ 2;
if (index >= _suggestions.length) {
_suggestions.addAll(generateWordPairs().take(10));
}
return _buildRow(_suggestions[index]);
});
}
Widget _buildRow(WordPair pair) {
final bool alreadySaved = _saved.contains(pair);
return new ListTile(
title: new Text(
pair.asPascalCase,
style: _biggerFont,
),
trailing: new Icon(
alreadySaved ? Icons.favorite : Icons.favorite_border,
color: alreadySaved ? Colors.red : null,
),
onTap: () {
setState(() {
if (alreadySaved) {
_saved.remove(pair);
} else {
_saved.add(pair);
}
});
},
);
}
void _pushSaved() {
Navigator.of(context).push(
new MaterialPageRoute<void>(
builder: (BuildContext context) {
final Iterable<ListTile> tiles = _saved.map(
(WordPair pair) {
return new ListTile(
title: new Text(
pair.asPascalCase,
style: _biggerFont,
),
);
},
);
final List<Widget> divided = ListTile
.divideTiles(
context: context,
tiles: tiles,
)
.toList();
return new Scaffold(
appBar: new AppBar(
title: const Text('Saved Suggestions'),
),
body: new ListView(children: divided),
);
},
),
);
}
}
您可以使用Flutter clipboard_manager包:Flutter clipboard manager
要安装它,请按照本页上的说明操作,非常简单:Flutter clipboard manager installation process
要使用它,请将其导入您正在编写的.dart文件中,然后您可以使用它:ClipboardManager.copyToClipBoard("your text to copy")
其中“您要复制的文本”可以替换为要复制到剪贴板的任何字符串。
如果要在复制文本后创建快餐栏,因为它是异步的,您可以这样做:
ClipboardManager.copyToClipBoard("your text to copy").then((result) {
final snackBar = SnackBar(
content: Text('Copied to Clipboard'),
action: SnackBarAction(
label: 'Undo',
onPressed: () {},
),
);
Scaffold.of(context).showSnackBar(snackBar);
});
评论:如果你看一下包源代码,它基本上是这样做的:
Clipboard.setData(new ClipboardData(text: "your text to copy"));
然而,我发现额外的语法糖和异步的优势使它成为一个更好的解决方案,没有什么是你不能用vanilla Flutter做的,但我觉得它好一点。
进口:
import 'package:flutter/services.dart';
然后简单地实现这个:
onTap: () {Clipboard.setData(new ClipboardData(text: "your text"));},