我想在列表视图中显示数据(例如硬编码示例)
当我想获取该值时,它无法工作。
如何在Flutter中从API获取periodtime、interestpermonth和loanamountrequest的值,并根据输入值获得相应的值?
![enter image description here](https://istack.dev59.com/IpXOw.webp)
I/flutter ( 9640): [{"No":0,"interest":"0.00","balance":"11,000,000,000.00","principal":"0.00","Installment":"0.00","Status":true},{"No":1,"interest":"110,000,000.00","balance":"0.00","principal":"11,000,000,000.00","Installment":"11,110,000,000.00","Status":true}]
I/flutter ( 9640): true
E/flutter ( 9640): [ERROR:flutter/lib/ui/ui_dart_state.cc(199)] Unhandled Exception: Invalid argument(s)
E/flutter ( 9640): #0 _StringBase.+ (dart:core-patch/string_patch.dart:272:57)
这里是异步获取数据的FetchData
List<LoanModel> _loanmodel = <LoanModel>[];
Future<LoanModel> _fetchData() async {
setState(() {
loading = true;
});
final response =
await http.get("http://192.168.0.23/Api/loansimulation.php?periodtime=" + periodtime + "&interestpermonth=" + interestpermonth + "&loanamountrequest=" +loanamountrequest); //with hardcode working fine
if (response.statusCode == 200) {
final data = jsonDecode(response.body);
setState(() {
for (Map i in data) {
_loanmodel.add(LoanModel.fromJson(i));
}
loading = false;
});
}
}
如何在Flutter中从API获取periodtime、interestpermonth和loanamountrequest的值,并根据输入值获得相应的值?