我正在从服务器中获得逗号分隔的字符串。然后,我通过使用.split((将其转换为数组。我必须将该数组填充到扑朔迷离列表中。怎么做。这是我的代码。
Widget _visitorPurpose() {
SharedPref.sharedPreferenceGet(StringsConstants.CLIENT_PURPOSE).then((dynamic res){
purposeTemp = res;
print(res);
purposeTemp2 = purposeTemp.split(",");
}); return StreamBuilder(
// stream: bloc.email,
builder: (context, snapshot) {
return new Container(
padding: EdgeInsets.fromLTRB(15.0, 0.0, 15.0, 0.0),
child: new Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
new DropdownButton<String>(
// value: selectedPurpose,
hint: new Text(
'Select visitng purpose',
style: TextStyle(fontFamily: "Gotham"),
),
items: <String>[purposeTemp]
.map((purposeTemp) {
return new DropdownMenuItem<String>(
value: purposeTemp,
child: new Text(
purposeTemp,
style: TextStyle(fontFamily: "Gotham"),
),
);
}).toList(),
onChanged: (String purpose) {
setState(() {
selectedPurpose = purpose;
});
},
// value: selectedPurpose,
)
],
),
);
},
);
}
这是我在响应后转换数组的方式。(结果(是我得到的响应。
result.config.values.elementAt(19).value
这就是我的变量的定义。
String purposeTemp = "";
var purposeTemp2 = [];
得到答案。对于这里的其他参考,我的答案是我的答案。
Widget _visitorPurpose() {
SharedPref.sharedPreferenceGet(StringsConstants.CLIENT_PURPOSE).then((dynamic res){
purposeTemp = res;
print(res);
purposeTemp2 = purposeTemp.split(",");
}); return StreamBuilder(
// stream: bloc.email,
builder: (context, snapshot) {
return Expanded(
child:new Container(
padding: EdgeInsets.fromLTRB(15.0, 0.0, 15.0, 0.0),
child: new Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
new DropdownButton<String>(
// value: selectedPurpose,
hint: new Text(
'Select visitng purpose',
style: TextStyle(fontFamily: "Gotham"),
),
items: purposeTemp2
.map((purposeTemp) {
return new DropdownMenuItem<String>(
value: purposeTemp,
child: new Text(
purposeTemp,
style: TextStyle(fontFamily: "Gotham"),
),
);
}).toList(),
onChanged: (String purpose) {
setState(() {
selectedPurpose = purpose;
});
},
// value: selectedPurpose,
)
],
),
),
);