public async Task <string> SendFileToServerAsync(string url, string filePath, string name,
Request request, CallbackOnFinished callbackOnFinish = null)
{
InitHttpClient();
this.ConvertRequestToJson(request);
MultipartFormDataContent form = new MultipartFormDataContent();
IFile fileToSend = await FileSystem.Current.GetFileFromPathAsync(filePath);
Stream fileToSendStream = await fileToSend.OpenAsync(FileAccess.Read);
byte[] fileToSendBytesArray = StorageUtility.ConvertStreamInBytesArray(fileToSendStream);
form.Add(new StringContent(API_KEY), "apikey");
form.Add(new StringContent(JsonRequest), "data");
form.Add(new ByteArrayContent(fileToSendBytesArray, 0, fileToSendBytesArray.Length),
name, filePath);
Debug.WriteLine("Sending json : " + JsonRequest);
HttpResponseMessage response = await httpClient.PostAsync(url, form);
response.EnsureSuccessStatusCode();
httpClient.Dispose();
string serverResponse = response.Content.ReadAsStringAsync().Result;
Debug.WriteLine("Server response = " + serverResponse);
callbackOnFinish?.Invoke(serverResponse);
return(serverResponse);
}
public async void WriteFileLocally(MemoryStream imageStream, string filename,
CallbackOnFinished callbackOnFinished)
{
IFolder localFolder = FileSystem.Current.LocalStorage;
IFile localFile = null;
localFolder = await localFolder.CreateFolderAsync(localFolderName,
CreationCollisionOption.OpenIfExists);
bool fileCreated = false;
int counter = 0;
while (!fileCreated)
{
try {
filename += ".jpg";
localFile = await localFolder.CreateFileAsync(filename,
CreationCollisionOption.FailIfExists);
fileCreated = true;
}
catch (Exception e) {
//file exists
counter++;
filename = StorageUtility.UpdateFilename(filename, counter);
}
}
using (Stream stream = await localFile.OpenAsync(FileAccess.ReadAndWrite)) {
imageStream.Position = 0;
imageStream.CopyTo(stream);
stream.Flush();
}
bool sendingResult = await SendFilePicToServer(localFile.Path, "file");
if (sendingResult)
{
await localFile.DeleteAsync();
}
//chiamare la callback operazione conclusa
callbackOnFinished();
}
public async Task <string> SendDataToServerAsync(string url,
Request request, CallbackOnFinished callbackOnFinish = null)
{
InitHttpClient();
this.ConvertRequestToJson(request);
List <KeyValuePair <string, string> > pairs = new List <KeyValuePair <string, string> > {
new KeyValuePair <string, string>("data", JsonRequest),
new KeyValuePair <string, string>("apikey", API_KEY)
};
FormUrlEncodedContent content = new FormUrlEncodedContent(pairs);
Debug.WriteLine("Sending json : " + JsonRequest);
HttpResponseMessage response = await httpClient.PostAsync(url, content);
response.EnsureSuccessStatusCode();
string serverResponse = response.Content.ReadAsStringAsync().Result;
Debug.WriteLine("Server response = " + serverResponse);
callbackOnFinish?.Invoke(serverResponse);
return(serverResponse);
}
public async void SendDataToServer(string url, Request request, CallbackOnFinished callbackOnFinish)
{
await this.SendDataToServerAsync(url, request, callbackOnFinish);
}
