如何从Xamarin.forms pcl中的Url中检索json字符串 [英] How to retrive json string from Url in Xamarin.forms pcl

问题描述

例如，我有URL http://www.pizzaboy.de/app/pizzaboy.json 由于Xamarin.forms PCL不支持WebClient，因此我使用了Xamarin文档，该文档在表单中使用Web服务. 并遵循此示例.

For example i have URL http://www.pizzaboy.de/app/pizzaboy.json As WebClient is not supported in Xamarin.forms PCL , i went with Xamarin documentation of using web services in forms and followed this example .

链接

我已经尽我所能去获取json string了.但它不起作用.

I have tried all what i can do go get the json string . but its not working .

以下代码不适用于所提及的网址

below code doesn't work for mentioned URL

public async Task<List<TodoItem>> RefreshDataAsync ()
        {
        var uri = new Uri ("http://www.pizzaboy.de/app/pizzaboy.json");
        HttpClient myClient = new HttpClient();

            var response = await myClient.GetAsync (uri);
if (response.IsSuccessStatusCode) {
                    var content = await response.Content.ReadAsStringAsync ();
                    Items = JsonConvert.DeserializeObject <List<TodoItem>> (content);
                }
}

响应自带的内容设置为null.

response comes with content set to null .

[是代理问题，上面的代码很不错]

[IT WAS PROXY ISSUE ,ABOVE CODE IS JUST FINE]

推荐答案

您的代码段对我来说都还不错，我只是尝试了一下，它对我来说就像是魅​​力.我在内容变量中得到了JSON字符串，我也可以反序列化它.这里正在分享我使用的代码段.

Your snippet looked all OK to me and I just gave it a try and it worked like charm for me. I got JSON string in content variable and I could deserialize it also. Here am sharing the snippet I used.

public static async Task RefreshDataAsync ()
    {
        var uri = new Uri ("http://www.pizzaboy.de/app/pizzaboy.json");
        HttpClient myClient = new HttpClient();

        var response = await myClient.GetAsync (uri);
        if (response.IsSuccessStatusCode) {
            var content = await response.Content.ReadAsStringAsync ();
            var Items = JsonConvert.DeserializeObject <List<RootObject>> (content);
            Console.WriteLine ("");
        }
    }

这是我对所使用的RootObject类的定义

Here is my definition for the class RootObject I used

public class RootObject
{
    public string Name { get; set; }
    public string Address1 { get; set; }
    public int Zip { get; set; }
    public string City { get; set; }
    public string Phone { get; set; }
    public double Lat { get; set; }
    public double Lon { get; set; }
    public string Link { get; set; }
}

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