chooseWork.dart
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import 'package:flutter/material.dart';
import 'package:flutter_mes2/bean/PdaWeld.dart';
import 'package:flutter_mes2/https/http_utils.dart';
import 'package:flutter_mes2/utils/ToastUtil.dart';
import 'artifact.dart';
class chooseWork extends StatefulWidget{
@override
State<StatefulWidget> createState() {
return _chooseWork();
}
}
class _chooseWork extends State<chooseWork>{
List<PdaWeld> mPdaList;
var value;
int index;
bool select = false;
List<DropdownMenuItem> getListData(){
List<DropdownMenuItem> items = new List();
List<PdaWeld> pdaWelds = mPdaList;
if(pdaWelds == null) {
return null;
}
for(PdaWeld pdaWeld in pdaWelds) {
DropdownMenuItem dropdownMenuItem1 = new DropdownMenuItem(
child: new Text(pdaWeld.name),
value: pdaWeld.id,
);
items.add(dropdownMenuItem1);
}
return items;
}
@override
void initState() {
// TODO: implement initState
Future.delayed( Duration.zero, () => setState(() {
_getPDAWeld();
}));
super.initState();
}
@override
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: Text("选择工位"),
centerTitle: true, // 标题居中),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Container(
height: 40,
key: ValueKey('"process'),
width: 260,
margin: EdgeInsets.only(top: 10, bottom: 5),//根据需求自定义
padding: EdgeInsets.only(left: 10),//根据需求自定义
//设置边框，参数自定义
decoration: BoxDecoration(
border: Border.all(color: Colors.lightGreenAccent, width: 3),
//边框圆角设置
borderRadius: BorderRadius.all(Radius.circular(40.0)),
),
child: Center(
child:DropdownButton(
items: getListData(),
underline: Container(color: Colors.white),
hint:new Text('请选择工序'),//当没有默认值的时候可以设置的提示
value: value,//下拉菜单选择完之后显示给用户的值
onChanged: (T){//下拉菜单item点击之后的回调
setState(() {
value=T;
index = 0;
select = true;
for(PdaWeld pdaWeld in mPdaList) {
if(pdaWeld.id == value) {
return;
}
index++;
}
});
},
elevation: 24,//设置阴影的高度
style: new TextStyle(//设置文本框里面文字的样式
color: Colors.grey
),
isDense: true,//减少按钮的高度。默认情况下，此按钮的高度与其菜单项的高度相同。如果isDense为true，则按钮的高度减少约一半。 这个当按钮嵌入添加的容器中时，非常有用
iconSize: 30,//设置三角标icon的大小
),
),
),
Container(
height: 40,
margin: EdgeInsets.only(left:50, right: 50, top: 40),
width: double.infinity,
child: RaisedButton(
onPressed:() {
if(!select) {
ToastUtil.showText( "请先选择工位");
return;
}
Navigator.push(context, MaterialPageRoute(builder: (_) {
return new artifact(pdaWeld : mPdaList[index]);
}));
},
child: Text('确定',
style: TextStyle(
fontSize: 20,
color: Colors.white
),),
color: Colors.deepOrangeAccent,
textColor: Colors.white,
shape: StadiumBorder(),
),
),
],
),
),
);
}
Future _getPDAWeld() async {
HttpUtils.pdaWeld(context, {}, success: (result) {
var moreData = result['data'];
List<dynamic> json = moreData;
List<PdaWeld> pdaWelds = json.map((i) => PdaWeld.fromJson(i)).toList();
setState(() {
mPdaList = pdaWelds;
});
}, fail: (code) {
});
}
}