我做了这个非常简单的应用，但是我有一个问题。 在我执行的每个操作（如删除某些内容）上，键盘都会自动打开。 我想避免这种情况，只在我单击文本表单字段（代码上的178行）时才打开键盘。 我怎样才能做到这一点？ 我知道这很简单，我已经使用focusnode尝试了一些事情，试图禁用自动对焦，但是我没能按照我需要的方式使它工作。
import 'dart:convert';
import 'dart:ffi';
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:path_provider/path_provider.dart';
import 'package:http/http.dart' as http;
void main() {
runApp(MaterialApp(
home: Pedidos(),
));
}
class Pedidos extends StatefulWidget {
@override
_PedidosState createState() => _PedidosState();
}
class _PedidosState extends State<Pedidos> with TickerProviderStateMixin {
TabController _tabController;
final _pecasController = TextEditingController();
List _pecasList = [];
var _firstPress = true;
@override
void initState() {
super.initState();
_tabController = new TabController(length: 3, vsync: this);
}
void _addPecas() {
if ((_pecasController.text.isEmpty) ||
((_pecasController.text.trimLeft() == ("")))) {
print("Campo Vazio");
} else {
setState(() {
Map<String, dynamic> newPeca = Map();
newPeca["title"] = _pecasController.text.trimLeft();
//newPeca["ok"] = false;
_pecasController.text = "";
_pecasList.add(newPeca);
// _saveData();
print(_pecasList);
});
}
}
void _enviar() {
if (_pecasList.length < 1) {
showDialog(
context: context,
builder: (BuildContext context) {
return AlertDialog(
title: new Text("Lista vazia"),
actions: <Widget>[
new FlatButton(
child: new Text("Fechar"),
onPressed: () {
Navigator.of(context).pop();
}),
]);
});
} else {
showDialog(
context: context,
builder: (BuildContext context) {
return AlertDialog(
title: new Text("Deseja enviar os itens?"),
actions: <Widget>[
new FlatButton(
child: new Text("Fechar"),
onPressed: () {
Navigator.of(context).pop();
}),
new FlatButton(
child: new Text("Enviar"),
onPressed: () async {
Map<String, String> headers = new Map<String, String>();
headers["Content-type"] = "application/json";
headers["Accept"] = "application/json";
//String str = '{"take":55, "skip":"0"}';
final resp = await http.post('http://172.16.14.109:5000/',
//body: str,
body: jsonEncode(_pecasList),
headers: headers);
if (resp.statusCode == 200) {
if (resp.body == "ok") {
setState(() {
print(_pecasList);
_pecasList.clear();
Navigator.of(context).pop();
});
} else {
showDialog(
context: context,
builder: (BuildContext context) {
return AlertDialog(
title: new Text(
"Erro: entre em contato com o suporte."),
actions: <Widget>[
new FlatButton(
child: new Text("Fechar"),
onPressed: () {
Navigator.of(context).pop();
Navigator.of(context).pop();
}),
]);
});
}
}
})
],
);
},
);
}
}
void _apagarTudo() {
showDialog(
context: context,
builder: (BuildContext context) {
return AlertDialog(
title: new Text("Deseja limpar a lista?"),
actions: <Widget>[
new FlatButton(
child: new Text("Fechar"),
onPressed: () {
Navigator.of(context).pop();
}),
new FlatButton(
child: new Text("Limpar"),
onPressed: () {
setState(() {
_pecasList.clear();
Navigator.of(context).pop();
});
}),
]);
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(
"Solicitação de Peças",
style: TextStyle(fontWeight: FontWeight.bold),
),
centerTitle: true,
backgroundColor: Colors.green,
),
body: Column(
children: <Widget>[
Padding(
padding: const EdgeInsets.all(8.0),
child: Row(
children: <Widget>[
Expanded(
flex: 8,
child: TextFormField(
controller: _pecasController,
keyboardType: TextInputType.text,
style: TextStyle(
color: Colors.black,
fontSize: 18,
),
decoration: InputDecoration(
hintText: ("Adicionar item"),
),
),
),
Padding(
padding: EdgeInsets.only(right: 15),
),
Expanded(
flex: 2,
child: RaisedButton(
child: Icon(Icons.add, color: Colors.amber),
color: Colors.green,
onPressed: _addPecas,
),
)
],
),
),
Divider(
height: 02.0,
),
Expanded(
child: ListView.builder(
itemCount: _pecasList.length,
itemBuilder: (context, index) {
return ListTile(
dense: true,
key:
Key(DateTime.now().millisecondsSinceEpoch.toString()),
title: Text(
_pecasList[index]["title"],
style: TextStyle(fontSize: 15.0),
),
trailing: Icon(
Icons.delete_forever,
color: Colors.redAccent,
),
onLongPress: () {
showDialog(
context: context,
builder: (BuildContext context) {
return AlertDialog(
title:
new Text("Deseja remover o item da lista?"),
actions: <Widget>[
new FlatButton(
child: new Text("Fechar"),
onPressed: () {
Navigator.of(context).pop();
},
),
new FlatButton(
child: new Text("Excluir"),
onPressed: () {
_pecasList.removeAt(index);
setState(() {
Navigator.of(context).pop();
});
},
),
],
);
},
);
});
}),
),
Row(
mainAxisAlignment: (MainAxisAlignment.center),
children: <Widget>[
Padding(
padding: const EdgeInsets.all(10.0),
child: RaisedButton(
color: Colors.green,
padding: EdgeInsets.all(5.0),
child: Row(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Padding(
padding: const EdgeInsets.all(4.0),
child: Icon(
Icons.send,
color: Colors.white,
),
),
Padding(
padding: const EdgeInsets.all(2.0),
child: Text(
"Enviar",
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.bold,
),
),
),
],
),
onPressed: _enviar,
)),
Padding(
padding: const EdgeInsets.all(10.0),
child: RaisedButton(
color: Colors.redAccent,
padding: EdgeInsets.all(5.0),
child: Row(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Padding(
padding: const EdgeInsets.all(4.0),
child: Icon(
Icons.delete,
color: Colors.white,
),
),
Padding(
padding: const EdgeInsets.all(2.0),
child: Text(
"Limpar",
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.bold,
),
),
),
],
),
onPressed: () {
_apagarTudo();
}))
],
)
],
),
);
}
}
答案 0 :(得分：0)
尝试这些更改。
我已控制${bot.guilds.size}的{{1}}字段。当您单击RaisedButton将项目添加到列表时，enabled被禁用。当您点击TextFormField时就会启用它。
TextFormField