public bool FileExists(string path)
{
string actualPath = nativeFileSystem.CombinePaths(fs_root, path);
if (string.IsNullOrWhiteSpace(path))
{
throw new System.ArgumentException("Path cannot be empty", "path");
}
if (!nativeFileSystem.IsPathValid(actualPath, true))
{
throw new InvalidPathException(actualPath);
}
try
{
return(nativeFileSystem.FileExists(actualPath));
}
catch (FileSystemException e)
{
Engine.Log.WriteLine("error/system/filesystem", "Failed to check if file {0} exists ({1})", path, e.Message);
return(false);
}
}
private async void LstAttachments_ItemSelected(object sender, SelectedItemChangedEventArgs e)
{
try
{
if (e.SelectedItem == null)
{
return;
}
Attachment att = (Attachment)e.SelectedItem;
lstAttachments.SelectedItem = null;
string attDir = GetAttachmentDir(this.inboxMessage);
string file = fileSystem.JoinPaths(attDir, FileHelper.SanitizeFileName(att.NomeArquivo));
att.Loading = true;
bool fileExists = fileSystem.FileExists(file);
using (var stream = fileSystem.GetFileStream(file))
{
if (!fileExists || stream.Length < att.Tamanho)
{
await HttpRequest.DownloadFileToStream(EndPointHelper.GetAbsoluteUrl(att.Url), stream);
stream.Flush();
}
}
att.Loading = false;
ShareViewModel share = new ShareViewModel();
share.FileName = file;
share.MimeType = att.MimeType;
share.Share();
} catch (Exception ex)
{
await DisplayAlert(AppResources.APP_TITLE, ex.Message, AppResources.OK);
}
}
