我遇到了麻烦,我的列表没有及时更新,我有一个for循环来填充机器代码,并且在我的列表_ machines中,它从Web服务接收数据,但其中包含代码,但是当我尝试将该代码分配给我的其他列表machineDetails,它不传递值,
这里是代码:
Future<void> _registerTime(int index) async {
try {
setState(() {
_loading = true;
});
String res = await gruposRepo.timeRegisterWorks(widget.worker.toString(),
widget.work, widget.product, widget.task, _machines[index].vCodigo);
print(res);
print("MachineDetails Lenght RegisterTime: ${machineDetails.length}");
for (int i = 0; i < _machines.length; i++) {
print('Machines $i code: ${_machines[i].vCodigo}');
machineDetails[i]?.code = _machines[i].vCodigo;
print('MachineDetails $i code: ${machineDetails[i]?.code}');
if (res == '1') {
machineDetails[i]?.working = true;
} else if (res == '2') {
machineDetails[i]?.working = false;
}
}
print(machineDetails[index]?.working);
showDialog(
context: context,
builder: (context) {
return AlertDialog(
title: Text(Translations.of(context).trans('saved')),
actions: <Widget>[
FlatButton(
child: Text('OK'),
onPressed: () => Navigator.of(context).pop(),
)
],
);
});
} catch (e) {
this._errorMsg = e.toString();
}
setState(() {
_loading = false;
});
}
这里是输出:
I/flutter (14487): Machines 0 code: 4
I/flutter (14487): MachineDetails 0 code: null
I/flutter (14487): Machines 1 code: 3
I/flutter (14487): MachineDetails 1 code: null
I/flutter (14487): Machines 2 code: 22
I/flutter (14487): MachineDetails 2 code: null
I/flutter (14487): Machines 3 code: 9
I/flutter (14487): MachineDetails 3 code: null
I/flutter (14487): Machines 4 code: 25
I/flutter (14487): MachineDetails 4 code: null
I/flutter (14487): Machines 5 code: 26
I/flutter (14487): MachineDetails 5 code: null
但是我的列表machineDetails列表的确更新为_ machines列表的长度:
I/flutter (14487): MachineDetails Lenght RegisterTime: 6
感谢您的时间和精力
machineDetails[i].code = _machines[i].vCodigo;