/// <summary>
/// 执行下载
/// </summary>
public async void StartDownloadHandler()
{
_progressBar.Progress = 0;
Progress <DownloadBytesProgress> progressReporter = new Progress <DownloadBytesProgress>();
progressReporter.ProgressChanged += (s, args) => _progressBar.Progress = (int)(100 * args.PercentComplete);
string tarPath = Android.OS.Environment.ExternalStorageDirectory + "/JYandroidpda.apk";
Task <int> downloadTask = DownloadHelper.CreateDownloadTask(tarPath, url_down, progressReporter);
int bytesDownloaded = await downloadTask;
System.Diagnostics.Debug.WriteLine("Downloaded {0} bytes.", bytesDownloaded);
}
async void StartDownloadHandler(object sender, EventArgs e)
{
ProgressBar.Progress = 0f;
Progress <DownloadBytesProgress> progressReporter = new Progress <DownloadBytesProgress>();
progressReporter.ProgressChanged += (s, args) => ProgressBar.Progress = args.PercentComplete;
Task <int> downloadTask = DownloadHelper.CreateDownloadTask(DownloadHelper.ImageToDownload, progressReporter);
int bytesDownloaded = await downloadTask;
Debug.WriteLine("Downloaded {0} bytes.", bytesDownloaded);
}
private async Task Download(RssEnCaso download, bool isManual)
{
var uri = new Uri(download.AudioBoomUrl);
string filename = System.IO.Path.GetFileName(uri.LocalPath);
int notificationId = new Random().Next();
ISharedPreferences prefs = PreferenceManager.GetDefaultSharedPreferences(this);
ISaveAndLoadFiles saveAndLoad = new SaveAndLoadFiles_Android();
Bitmap bm = null;
NotificationManager notificationManager = (NotificationManager)this.ApplicationContext.GetSystemService(Context.NotificationService);
if (Android.OS.Build.VERSION.SdkInt >= Android.OS.BuildVersionCodes.O)
{
NotificationChannel mChannel = new NotificationChannel(channel_id, channel_name, NotificationImportance.Default)
{
Description = channel_description,
LightColor = Color.Red
};
mChannel.EnableLights(true);
mChannel.SetShowBadge(true);
notificationManager.CreateNotificationChannel(mChannel);
}
NotificationCompat.Builder builder = new NotificationCompat.Builder(this.ApplicationContext, channel_id)
.SetAutoCancel(true) // Dismiss from the notif. area when clicked
.SetContentTitle(download.Title) // Set its title
.SetSmallIcon(Resource.Mipmap.ic_launcher)
.SetProgress(100, 0, false)
.SetOnlyAlertOnce(true)
.SetContentText(this.ApplicationContext.GetString(Resource.String.download_service_downloading));
if (bm != null)
{
builder.SetLargeIcon(bm);
}
if (isManual)
{
notificationManager.Notify(notificationId, builder.Build());
}
else
{
StartForeground(id, builder.Build());
}
int ant = 1;
Progress <DownloadBytesProgress> progressReporter = new Progress <DownloadBytesProgress>();
progressReporter.ProgressChanged += (s, args) =>
{
int perc = (int)(100 * args.PercentComplete);
if (perc > ant)
{
ant += 1;
builder.SetProgress(100, (int)(100 * args.PercentComplete), false);
if (isManual)
{
notificationManager.Notify(notificationId, builder.Build());
}
else
{
StartForeground(id, builder.Build());
}
}
};
try
{
if (Android.OS.Build.VERSION.SdkInt >= BuildVersionCodes.M)
{
Permission permissionCheck = this.ApplicationContext.CheckSelfPermission(Manifest.Permission.WriteExternalStorage);
if (permissionCheck != Permission.Granted)
{
throw new UnauthorizedAccessException();
}
}
Task <byte[]> downloadTask = DownloadHelper.CreateDownloadTask(download.AudioBoomUrl, progressReporter);
byte[] bytesDownloaded = null;
//try
//{
bytesDownloaded = await downloadTask;
//}
//catch (Exception ex1)
//{
// if (ex1.Message.Contains("(404) Not Found"))
// {
// downloadTask = DownloadHelper.CreateDownloadTask(download.AudioBoomUrl, progressReporter);
// bytesDownloaded = await downloadTask;
// }
//}
ISaveAndLoadFiles saveFile = new SaveAndLoadFiles_Android();
var path = saveFile.SaveByteAsync(filename, bytesDownloaded);
MediaScannerConnection
.ScanFile(this.ApplicationContext,
new string[] { path },
new string[] { "audio/*" }, null);
var enCasoFile = LocalDatabase <EnCasoFile> .GetEnCasoFileDb().GetFirstUsingString("SavedFile", path);
if (enCasoFile != null)
{
LocalDatabase <EnCasoFile> .GetEnCasoFileDb().Delete(enCasoFile);
}
LocalDatabase <EnCasoFile> .GetEnCasoFileDb().Save(
new EnCasoFile()
{
Title = download.Title,
Description = download.Description,
PubDate = download.PubDate,
ImageUrl = download.ImageUrl,
SavedFile = path,
DownloadDateTime = DateTime.Now
}
);
Intent openIntent = new Intent(this.ApplicationContext, typeof(MainActivity));
openIntent.PutExtra(General.ALARM_NOTIFICATION_EXTRA, (int)DownloadReturns.OpenFile);
openIntent.PutExtra(General.ALARM_NOTIFICATION_FILE, path);
openIntent.PutExtra(General.ALARM_NOTIFICATION_TITLE, download.Title);
openIntent.PutExtra(General.ALARM_NOTIFICATION_IMAGE, download.ImageUrl);
PendingIntent pIntent = PendingIntent.GetActivity(this.ApplicationContext, 0, openIntent, PendingIntentFlags.UpdateCurrent);
builder
.SetProgress(0, 0, false)
.SetContentText(download.Description)
.SetContentIntent(pIntent);
notificationManager.Notify(notificationId, builder.Build());
}
catch (UnauthorizedAccessException)
{
builder
.SetProgress(0, 0, false)
.SetContentText(Resources.GetString(Resource.String.download_service_unauthorized_file_exception));
notificationManager.Notify(notificationId, builder.Build());
}
catch (IOException)
{
builder
.SetProgress(0, 0, false)
.SetContentText(Resources.GetString(Resource.String.download_service_io_file_exception));
notificationManager.Notify(notificationId, builder.Build());
}
catch (Exception ex)
{
if (ex.Message.Contains("full"))
{
builder
.SetProgress(0, 0, false)
.SetContentText(Resources.GetString(Resource.String.download_service_disk_full));
}
else
{
builder
.SetProgress(0, 0, false)
.SetContentText(Resources.GetString(Resource.String.download_service_lost_internet_connection));
}
if (isManual)
{
notificationManager.Notify(notificationId, builder.Build());
}
else
{
StartForeground(id, builder.Build());
}
}
}
