C# 从web加载并保存到磁盘的图像出现问题,直到我拔下手机插头并将其重新插入后才会出现
我认为我的手机工作得很好,因为我把手机拔了,当我把手机重新插上时,所有的图片都正常工作了。然而,当我尝试使用它们时,它似乎没有如预期的那样工作,因为image.Properties.Width=0 你们能帮我把它弄好吗 代码如下: 主页C# 从web加载并保存到磁盘的图像出现问题,直到我拔下手机插头并将其重新插入后才会出现,c#,image,windows-phone-8.1,C#,Image,Windows Phone 8.1,我认为我的手机工作得很好,因为我把手机拔了,当我把手机重新插上时,所有的图片都正常工作了。然而,当我尝试使用它们时,它似乎没有如预期的那样工作,因为image.Properties.Width=0 你们能帮我把它弄好吗 代码如下: 主页 public sealed partial class MainPage : Page { private GetFromJson get = new GetFromJson(); public MainPage() {
public sealed partial class MainPage : Page
{
private GetFromJson get = new GetFromJson();
public MainPage()
{
this.InitializeComponent();
this.NavigationCacheMode = NavigationCacheMode.Required;
get.GetFullResponse(GlobalVariables.apiUrl + "/" + "api/"+ GlobalVariables.shopping + "/general");
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
}
private void btnIngresarConEmail_Click(object sender, RoutedEventArgs e)
{
Frame.Navigate(typeof(IngresarConEmail));
}
private void btnCrearCuenta_Click(object sender, RoutedEventArgs e)
{
Frame.Navigate(typeof(CrearCuenta));
}
}
全局变量
public class GlobalVariables
{
public static string UserName;
public static string EmailAddress;
public static string Password;
public static string Name;
public static IList<Medio> Medios;
public string Stores;
public static string apiUrl = "http://ec2-52-8-2-140.us-west-1.compute.amazonaws.com";
public static string shopping = "1";
}
梅迪奥
非常感谢 我认为您的问题在于您的服务,所有图像均为空:
我发现了问题。。。。这只是时间问题。。。这些图片是在用户填写电子邮件、用户名和密码之后出现的。。。我跳过了,但一旦我花时间这么做了,图像都在那里,大多数都是空的,但在后端工作的家伙正在尽可能快地更新它们
public class GetFromJson
{
private Medio medio = new Medio();
public async void GetFullResponse(string address)
{
try
{
var client = new HttpClient();
var uri = new Uri(address);
Debug.WriteLine(uri);
var Response = await client.GetAsync(uri);
var statusCode = Response.StatusCode;
Response.EnsureSuccessStatusCode();
var ResponseText = await Response.Content.ReadAsStringAsync();
string myJson = ResponseText;
Debug.WriteLine(myJson);
medio.deserializeAndConvert(myJson);
}
catch (Exception ex)
{
Debug.WriteLine(ex);
}
}
}
public class Medio
{
public string id { get; set; }
public string name { get; set; }
public string type { get; set; }
public string img { get; set; }
public string medios_id { get; set; }
public void deserializeAndConvert(string aaa)
{
JObject myGeneral = JObject.Parse(aaa);
IList<JToken> results = myGeneral["resp"]["medios"].Children().ToList();
IList<Medio> searchResults = new List<Medio>();
foreach (JToken result in results)
{
Medio searchResult = JsonConvert.DeserializeObject<Medio>(result.ToString());
searchResults.Add(searchResult);
Debug.WriteLine(searchResults);
}
Debug.WriteLine(searchResults.Count);
GlobalVariables.Medios = searchResults;
var selected = GlobalVariables.Medios.Where(item => item.img!=null);
Debug.WriteLine(GlobalVariables.Medios[0].ToString());
}
}
public sealed partial class CrearCuenta : Page
{
public CrearCuenta()
{
this.InitializeComponent();
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
QueryPicturesToShow();
}
public async void QueryPicturesToShow()
{
var pics = from medio in GlobalVariables.Medios
where medio.img != null
select new { Name = medio.name, Id = medio.id, Picture = medio.img };
foreach (var item in pics)
{
Debug.WriteLine(item.Name);
Debug.WriteLine(item.Id);
Debug.WriteLine(item.Picture);
await savePicToDisk(item.Picture, item.Name, item.Id);
}
}
private async Task savePicToDisk(string picAddress, string picName, string picId)
{
StorageFolder folder = await KnownFolders.PicturesLibrary.CreateFolderAsync("carpetaFunciona", CreationCollisionOption.OpenIfExists);
StorageFile file = await folder.CreateFileAsync((picName + picId + ".png"), CreationCollisionOption.ReplaceExisting);
string url = GlobalVariables.apiUrl + picAddress;
Debug.WriteLine(url);
System.Net.Http.HttpClient client = new System.Net.Http.HttpClient();
byte[] responseBytes = await client.GetByteArrayAsync(url);
var stream = await file.OpenAsync(FileAccessMode.ReadWrite);
using (var outputStream = stream.GetOutputStreamAt(0))
{
DataWriter writer = new DataWriter(outputStream);
writer.WriteBytes(responseBytes);
await writer.StoreAsync();
await outputStream.FlushAsync();
}
Debug.WriteLine(file.Name);
}