好,所以我有一个复杂的问题 所以我在这个列表中有一个复选框和一些文本,我希望我可以添加一个图像来欺骗它以思考其文本问题是,每当我添加一些文本时,图像就会随之添加I
import 'package:flutter/material.dart';
import 'dart:async';
import 'dart:io';
import 'package:image_picker/image_picker.dart';
void main() {
runApp(new MyApp(
title: new Text("My App"),
someText: new Text("Some Text..."),
));
}
class MyApp extends StatefulWidget {
MyApp({this.title, this.someText});
final Widget title, someText;
@override
_MyAppState createState() => new _MyAppState();
}
class _MyAppState extends State<MyApp> {
File _image;
Future getImage() async {
var image = await ImagePicker.pickImage(source: ImageSource.camera);
setState(() {
_image = image;
});
}
TextEditingController eCtrl = new TextEditingController();
bool showDialog = false;
List<String> textlist = [];
List<bool> textChkBox = [];
Widget build(BuildContext context) {
return new MaterialApp(
home: new Scaffold(
appBar: new AppBar(
title: widget.title,
actions: <Widget>[
new IconButton(
icon: new Icon(Icons.add_comment),
onPressed: () {
setState(() {
showDialog = true;
});
}),
),
new FloatingActionButton(
onPressed: getImage,
tooltip: 'pick Image',
child: new Icon(Icons.camera),
),
],
),
body: new Column(
children: <Widget>[
showDialog == true
? new AlertDialog(
title: new Text("Alert Dialog"),
content: new TextField(
controller: eCtrl,
decoration: new InputDecoration.collapsed(hintText: "ADD XYZ"),
maxLines: 6,
onSubmitted: (String text) {},
),
actions: <Widget>[
new FlatButton(
onPressed: () {
setState(() {
showDialog = false;
textlist.add(eCtrl.text);
textChkBox.add(false);
eCtrl.clear();
});
},
child: new Text("OK"))
],
) : new Text(""),
new Flexible(
child: new ListView.builder(
itemCount: textlist.length,
itemBuilder: (BuildContext ctxt, int index) {
return new Column(children: <Widget>[
new Checkbox(
value: textChkBox[index],
onChanged: (bool newValue) {
textChkBox[index] = newValue;
setState(() {});
},
),
new Text(textlist[index]),
new Card(
child: _image == null ? new Text("-")
: new Image.file(_image),
),
]
);
}
)
)
],
),
),
);
}
}
如您所见,它同时显示复选框,文本和图像