I have a List with this structure called userList

List userLIst = [{NAME: John, SURNAME: Doe, DATE: 24/8/2021, DESCRIPTION: Some words}, {...}, {...}];

I want to refer to that l,list,flutter,nested-lists"/>

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I have a List with this structure called userList

List userLIst = [{NAME: John, SURNAME: Doe, DATE: 24/8/2021, DESCRIPTION: Some words}, {...}, {...}];

I want to refer to that l

list - 从嵌套列表中获取数据 and display it on a widget

I have a List with this structure called userList

List userLIst = [{NAME: John, SURNAME: Doe, DATE: 24/8/2021, DESCRIPTION: Some words}, {...}, {...}];

I want to refer to that l

问题描述

I have a List with this structure called userList

List userLIst = [{NAME: John, SURNAME: Doe, DATE: 24/8/2021, DESCRIPTION: Some words}, {...}, {...}];

I want to refer to that list and use List.generate(userList.length, index) => Container(display data from the list), so I can display all the data inside the cards. Is it possible to do this?

something like this

data = {
    "message_response": {
        "compdetailssummary": {
            "computer_summary": {
                "computer_name": "ABC",
                "primary_owner": "Windows User",
                "domain_name": "WORKGROUP"
            },
            "computer_network_adapter_summary": [
                {
                    "dhcp_status": "Enabled",
                    "adapter_name": "[00000001] Fortinet Virtual Ethernet Adapter (NDIS 6.30)",
                    "mac_address": "00:00:0F:00:00:01",
                    "dhcp_server": "-",
                    "ip_address": "-",
                    "gateway": "-"
                },
                {
                    "dhcp_status": "Enabled",
                    "adapter_name": "[00000004] Intel(R) Ethernet Connection I219-LM",
                    "mac_address": "00:00:0F:00:00:01",
                    "dhcp_server": "-",
                    "ip_address": "-",
                    "gateway": "-"
                },
                {
                    "dhcp_status": "Enabled",
                    "adapter_name": "[00000005] Intel(R) Dual Band Wireless-AC 8260",
                    "mac_address": "00:00:0F:00:00:01",
                    "dhcp_server": "1.1.9.1",
                    "ip_address": "1.2.9.3",
                    "gateway": "1.1.8.1"
                },
                {
                    "dhcp_status": "Enabled",
                    "adapter_name": "[00000007] Bluetooth Device (Personal Area Network)",
                    "mac_address": "00:00:0F:00:00:01",
                    "dhcp_server": "-",
                    "ip_address": "-",
                    "gateway": "-"
                },
                {
                    "dhcp_status": "Disabled",
                    "adapter_name": "[00000002] PPPoP WAN Adapter",
                    "mac_address": "-",
                    "dhcp_server": "--",
                    "ip_address": "--",
                    "gateway": "--"
                },
                {
                    "dhcp_status": "Enabled",
                    "adapter_name": "[00000003] Fortinet SSL VPN Virtual Ethernet Adapter",
                    "mac_address": "00:00:0F:00:00:01",
                    "dhcp_server": "--",
                    "ip_address": "--",
                    "gateway": "--"
                }
            ]
        }
    }
}

interesting_adapters = [adapter for adapter in data['message_response']['compdetailssummary']['computer_network_adapter_summary'] if
                        'Intel(R) Ethernet' in adapter['adapter_name'] or 'Intel(R) Dual Band Wireless' in adapter[
                            'adapter_name']]

print(interesting_adapters)
print(len(interesting_adapters))

output

[{'dhcp_status': 'Enabled', 'adapter_name': '[00000004] Intel(R) Ethernet Connection I219-LM', 'mac_address': '00:00:0F:00:00:01', 'dhcp_server': '-', 'ip_address': '-', 'gateway': '-'}, {'dhcp_status': 'Enabled', 'adapter_name': '[00000005] Intel(R) Dual Band Wireless-AC 8260', 'mac_address': '00:00:0F:00:00:01', 'dhcp_server': '1.1.9.1', 'ip_address': '1.2.9.3', 'gateway': '1.1.8.1'}]
2

标签： listflutternested-lists

解决方案

您应该对列表使用 map 方法：

final widgetList = userList.map((element) => Container(child: Text(element['NAME']))).toList();

比您可以在构建方法中的 aListView或Widget 中显示此列表。Column

class YourView extends StatelessWidget{

 Widget build(){
  final widgetList = userList.map<Widget>((element) => Container(child: 
    Text(element['NAME']))).toList();

  return ListView(
    children: widgetList,
  );
 }
}

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