Xamarin C＃PCL-JSON內容到列表視圖

Question

我正在學習Xamarin，並試圖將Jira Json的輸出推送到名為ListView1的列表視圖中。 如果有人想幫助新手，請務必。 當我輸出內容但不進入列表視圖時，一切都會在調試中輸出數據。 我究竟做錯了什么？

請注意，我必須對Avatar URL使用DataContract，因為在json2sharp中運行時它顯示無效。 不知道那是正確的。

這是Json OUTPUT https://0bin.net/paste/8vbm-XlwIPcuxCeL#qG-rL5BzxIzCNx/3LpUdO8VMukLuFiAvG7+wHdNbra5的示例，我將其分類（使用Jira輸出）

public class ItemClass
    {
        public class Links
        {
            public string @base { get; set; }
            public string context { get; set; }
            public string self { get; set; }
        }

        public class CreatedDate
        {
            public string iso8601 { get; set; }
            public string jira { get; set; }
            public string friendly { get; set; }
            public object epochMillis { get; set; }
        }

        [DataContract]
        public class AvatarUrls
        {
            [DataMember(Name = "48x48")]
            public string Icon_48x48 { get; set; }
            [DataMember(Name = "24x24")]
            public string Icon_24x24 { get; set; }
            [DataMember(Name = "16x16")]
            public string Icon_16x16 { get; set; }
            [DataMember(Name = "32x32")]
            public string Icon_32x32 { get; set; }
        }

        public class Links2
        {
            public string jiraRest { get; set; }
            public AvatarUrls avatarUrls { get; set; }
            public string self { get; set; }
        }

        public class Reporter
        {
            public string name { get; set; }
            public string key { get; set; }
            public string emailAddress { get; set; }
            public string displayName { get; set; }
            public bool active { get; set; }
            public string timeZone { get; set; }
            public Links2 _links { get; set; }
        }

        public class RequestFieldValue
        {
            public string fieldId { get; set; }
            public string label { get; set; }
            public object value { get; set; }
        }

        public class StatusDate
        {
            public string iso8601 { get; set; }
            public string jira { get; set; }
            public string friendly { get; set; }
            public object epochMillis { get; set; }
        }

        public class CurrentStatus
        {
            public string status { get; set; }
            public StatusDate statusDate { get; set; }
        }

        public class Links3
        {
            public string web { get; set; }
            public string self { get; set; }
        }

        public class Value
        {
            public List<string> _expands { get; set; }
            public string issueId { get; set; }
            public string issueKey { get; set; }
            public string requestTypeId { get; set; }
            public string serviceDeskId { get; set; }
            public CreatedDate createdDate { get; set; }
            public Reporter reporter { get; set; }
            public List<RequestFieldValue> requestFieldValues { get; set; }
            public CurrentStatus currentStatus { get; set; }
            public Links3 _links { get; set; }
        }

        public class RootObject
        {
            public List<string> _expands { get; set; }
            public int size { get; set; }
            public int start { get; set; }
            public int limit { get; set; }
            public bool isLastPage { get; set; }
            public Links _links { get; set; }
            public List<Value> values { get; set; }
        }

    }

執行時顯示的代碼：

using (HttpClient client = new HttpClient())
            {
                var content = "";
                string url = "https://***/rest/servicedeskapi/request";
                client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Basic", baseauth);
                client.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));

                HttpResponseMessage response = await client.GetAsync(url);
                content = await response.Content.ReadAsStringAsync();

                var Items = JsonConvert.DeserializeObject<List<ItemClass.RootObject>>(content);
                ListView1.ItemsSource = Items;

xaml上的Listview：

<ListView x:Name="ListView1" RowHeight="60">
                <ListView.ItemTemplate>
                    <DataTemplate>
                        <ViewCell>
                            <StackLayout Orientation="Vertical" Padding="8,0,8,0">
                                <Label Text="{Binding reporter}" TextColor="#000" FontSize="14" LineBreakMode="TailTruncation" />
                            </StackLayout>
                        </ViewCell>
                    </DataTemplate>
                </ListView.ItemTemplate>
            </ListView>

Answer 1

您綁定到List<RootObject> 。 在您的Cell您綁定到reporter屬性。 但是， RootObject沒有reporter屬性。 因此，可以向其中添加reporter者，或者查看您的代碼，使ItemsSource ： Items.values具有reporter屬性。

因此，像這樣更改代碼：

var Items = JsonConvert.DeserializeObject<List<ItemClass.RootObject>>(content);
ListView1.ItemsSource = Items.values;