Question

我对这段代码有疑问：

return SubscriptionTile(subscription: subscriptions[index].toString());

------------------------完整代码（subscription_list.dart）---------------- --------

import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:xhub/screens/subscription/subscription_tile.dart';

class SubscriptionList extends StatefulWidget {
  @override
  _SubscriptionListState createState() => _SubscriptionListState();
}

class _SubscriptionListState extends State<SubscriptionList> {
  @override
  Widget build(BuildContext context) {
    final subscriptions = Provider.of<List<SubscriptionList>>(context);
    return ListView.builder(
        itemCount: subscriptions.length,
        itemBuilder: (context, index) {
          return SubscriptionTile(subscription: subscriptions[index].toString());
        },
      );
  }
}

------------------------完整代码（subscription_tile.dart）---------------- --------

import 'package:flutter/material.dart';
import 'package:xhub/models/user.dart';

class SubscriptionTile extends StatelessWidget {
  final SubscriptionsList subscription;
  SubscriptionTile({this.subscription});

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: EdgeInsets.only(top: 8.0),
      child: Card(
        margin: EdgeInsets.fromLTRB(20.0, 6.0, 20.0, 0.0),
        child: ListTile(
          leading: CircleAvatar(
            radius: 25.0,
            backgroundColor: Colors.grey,
          ),
          title: Text(subscription.domain),
          subtitle: Text('Renew Date: ${subscription.renew}'),
          isThreeLine: true,
        ),
      ),
    );
  }
}

------------------------完整代码（user.dart）---------------- --------

class SubscriptionsList {
  final String domain;
  final String type;
  final String plan;
  final String renew;
  final String backup;
  final String ssl;
  final String ns1;
  final String ns2;
  final String cplink;
  final String cpuser;
  final String cppass;
  final String serveruser;
  final String serverpass;
  SubscriptionsList(
      {this.domain,
      this.type,
      this.plan,
      this.renew,
      this.backup,
      this.ssl,
      this.ns1,
      this.ns2,
      this.cplink,
      this.cpuser,
      this.cppass,
      this.serveruser,
      this.serverpass});
}

------------------------错误--------------------- ---

The argument type 'SubscriptionList' can't be assigned to the parameter type 'SubscriptionsList'.

Answer 1

您定义了两个SubscriptionList类。因此，您的代码必须是一种，但是要导入另一种。重命名两者之一。例如，为SubscriptionList小部件命名为SubscriptionListWidget。

无法将参数类型“ SubscriptionList”分配给参数类型“ SubscriptionsList”

1 个答案: