public static async Task<Android.Net.Uri> DownloadDocument (Context ctx, Android.Net.Uri uriToDownload, string saveFilePath, IProgress<DownloadBytesProgress> progessReporter)
{
int receivedBytes = 0;
int totalBytes = 0;
using (var assetFileDescriptor = ctx.ContentResolver.OpenAssetFileDescriptor (uriToDownload, "r"))
using (var fileOutputStream = new Java.IO.FileOutputStream (saveFilePath))
using (var inputStream = assetFileDescriptor.CreateInputStream ()) {
var buffer = new byte [BufferSize];
totalBytes = (int)assetFileDescriptor.Length;
for (;;) {
var bytesRead = await inputStream.ReadAsync (buffer, 0, buffer.Length);
if (bytesRead == 0) {
await Task.Yield();
break;
}
await fileOutputStream.WriteAsync (buffer, 0, buffer.Length);
receivedBytes += bytesRead;
if (progessReporter != null) {
var args = new DownloadBytesProgress (uriToDownload.ToString (), saveFilePath, receivedBytes, totalBytes);
progessReporter.Report(args);
}
}
inputStream.Close ();
fileOutputStream.Close ();
}
var file = new Java.IO.File (saveFilePath);
var docUri = Android.Net.Uri.FromFile (file);
return docUri;
}
private async Task <string> SaveFileToFolder(Android.Net.Uri uri, string fileName)
{
Android.Net.Uri docUri = Android.Provider.DocumentsContract.BuildDocumentUriUsingTree(uri,
Android.Provider.DocumentsContract.GetTreeDocumentId(uri));
string fileFolder = SAFFileUtil.GetPath(this, docUri);
Java.IO.File destFolder = new Java.IO.File(fileFolder);
Java.IO.File file = new Java.IO.File(destFolder, fileName);
Java.IO.File tempFile = new Java.IO.File(TempFilePath);
destFolder.Mkdirs();
if (!file.Exists())
{
file.CreateNewFile();
}
Java.IO.FileInputStream fileInput = new Java.IO.FileInputStream(tempFile);
Java.IO.FileOutputStream fileOutput = new Java.IO.FileOutputStream(file, false);
while (true)
{
byte[] data = new byte[1024];
int read = await fileInput.ReadAsync(data, 0, data.Length);
if (read <= 0)
{
break;
}
await fileOutput.WriteAsync(data, 0, read);
}
fileInput.Close();
fileOutput.Close();
return(file.AbsolutePath);
}
public static async Task <Android.Net.Uri> DownloadDocument(Context ctx, Android.Net.Uri uriToDownload, string saveFilePath, IProgress <DownloadBytesProgress> progessReporter)
{
int receivedBytes = 0;
int totalBytes = 0;
using (var assetFileDescriptor = ctx.ContentResolver.OpenAssetFileDescriptor(uriToDownload, "r"))
using (var fileOutputStream = new Java.IO.FileOutputStream(saveFilePath))
using (var inputStream = assetFileDescriptor.CreateInputStream()) {
var buffer = new byte [BufferSize];
totalBytes = (int)assetFileDescriptor.Length;
for (;;)
{
var bytesRead = await inputStream.ReadAsync(buffer, 0, buffer.Length);
if (bytesRead == 0)
{
await Task.Yield();
break;
}
await fileOutputStream.WriteAsync(buffer, 0, buffer.Length);
receivedBytes += bytesRead;
if (progessReporter != null)
{
var args = new DownloadBytesProgress(uriToDownload.ToString(), saveFilePath, receivedBytes, totalBytes);
progessReporter.Report(args);
}
}
inputStream.Close();
fileOutputStream.Close();
}
var file = new Java.IO.File(saveFilePath);
var docUri = Android.Net.Uri.FromFile(file);
return(docUri);
}