public override async Task DeleteAsync(CancellationToken ct, StorageDeleteOption options)
{
await Task.Run(() =>
{
_directoryDocument.Delete();
}, ct);
}
public async Task <bool> RemoveFileIfExists(ContentType accessType, string filename, string storageLocationBase)
{
var fileIfExists = GetPathIfFileExists(accessType, filename, storageLocationBase);
if (!fileIfExists.Exists)
{
return(false);
}
switch (accessType)
{
case ContentType.DirectAccess:
File.Delete(fileIfExists.Path);
await Task.Delay(50);
return(true);
case ContentType.StorageFramework:
var doc = DocumentsContract.BuildDocumentUriUsingTree(Uri.Parse(storageLocationBase), fileIfExists.Path);
DocumentFile file = DocumentFile.FromTreeUri(Android.App.Application.Context, doc);
await Task.Delay(50);
return(file.Delete());
default:
throw new ArgumentOutOfRangeException(nameof(accessType), accessType, null);
}
}
public void DeleteFile(string path)
{
Android.Net.Uri uri;
string auth = "com.Linaq.LinaqStorage.Android.fileprovider";
string mimeType = Android.Webkit.MimeTypeMap.Singleton.GetMimeTypeFromExtension(Android.Webkit.MimeTypeMap.GetFileExtensionFromUrl(path.ToLower()));
if (mimeType == null)
{
mimeType = "*/*";
}
if (path.StartsWith("content://"))
{
uri = Android.Net.Uri.Parse(path);
DocumentFile pickedDir = DocumentFile.FromSingleUri(Android.App.Application.Context, uri);
if (pickedDir.Exists())
{
pickedDir.Delete();
}
}
else
{
var file = new Java.IO.File(Path.Combine(Android.App.Application.Context.FilesDir.Path, path));
file.Delete();
// uri = FileProvider.GetUriForFile(Android.App.Application.Context, auth, file);
}
}
/// <summary>
/// löscht das Objekt
/// </summary>
/// <param name="storagename">z.B. "primary" oder "19F4-0903"</param>
/// <param name="volpath">abs. Pfad im Volume</param>
/// <returns></returns>
public bool Delete(string storagename, string volpath)
{
DocumentFile doc = GetExistingDocumentFile(storagename, volpath);
bool ok = doc != null && doc.Delete();
System.Diagnostics.Debug.WriteLine("AndroidDelete(" + storagename + ", " + volpath + ") = " + ok.ToString());
return(ok);
}
public async Task DeleteAsync(CancellationToken cancellationToken = default(CancellationToken))
{
file.Delete();
}
public Task <bool> SaveFileInFolder(FileData fileToSave, FolderData folder, bool shouldOverWrite)
{
var uniqueId = Guid.NewGuid();
var next = new TaskCompletionSource <bool>(uniqueId);
// Interlocked.CompareExchange(ref object location1, object value, object comparand)
// Compare location1 with comparand.
// If equal replace location1 by value.
// Returns the original value of location1.
// ---
// In this context, tcs is compared to null, if equal tcs is replaced by next,
// and original tcs is returned.
// We then compare original tcs with null, if not null it means that a task was
// already started.
if (Interlocked.CompareExchange(ref tcs_bool_as_int, next, null) != null)
{
return(Task.FromResult <bool>(false));
}
EventHandler <PermissionRequestEventArgs> handler = null;
weakContext.TryGetTarget(out Context newContext);
var requestPermissionIntent = new Intent(newContext, typeof(RequestPermissionActivity));
requestPermissionIntent.SetFlags(ActivityFlags.NewTask);
requestPermissionIntent.PutExtra(RequestPermissionActivity.RequestedPermission, Manifest.Permission.WriteExternalStorage);
handler = (sender, e) =>
{
// Interlocaked.Exchange(ref object location1, object value)
// Sets an object to a specified value and returns a reference to the original object.
// ---
// In this context, sets tcs to null and returns it.
var task = Interlocked.Exchange(ref tcs_bool_as_int, null);
RequestPermissionActivity.OnPermissionGranted -= handler;
if (e.success)
{
try
{
var test = Android.Net.Uri.Parse(folder.FolderPath);// + "/test.pdf");
var documentFile = DocumentFile.FromTreeUri(newContext, test);
DocumentFile newFile = documentFile.FindFile(fileToSave.FileName);
if (newFile != null)
{
if (shouldOverWrite)
{
newFile.Delete();
}
else
{
//supposed to create uniuqe name in this case
var purefilename = Path.GetFileNameWithoutExtension(fileToSave.FileName);
var fileextention = Path.GetExtension(fileToSave.FileName);
fileToSave.FileName = purefilename + "_" + Path.GetRandomFileName() + fileextention;
}
}
documentFile.CreateFile("*/*", fileToSave.FileName);
//var documentFile = DocumentFile.FromTreeUri(activity, test);
var outputstream = newContext.ContentResolver.OpenOutputStream(newFile.Uri);
fileToSave.GetStream().CopyTo(outputstream);
outputstream.Flush();
outputstream.Close();
task.SetResult(e.success);
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
task.SetCanceled();
}
}
};
RequestPermissionActivity.OnPermissionGranted += handler;
//proably need a try statement here
newContext.StartActivity(requestPermissionIntent);
return(tcs_bool_as_int.Task);
}
