//Method to save document as a file in Android and view the saved document
public async Task SaveAndView(string fileName, String contentType, MemoryStream stream)
{
string root = null;
if (ContextCompat.CheckSelfPermission(Forms.Context, Manifest.Permission.WriteExternalStorage) != Permission.Granted)
{
ActivityCompat.RequestPermissions((Android.App.Activity)Forms.Context, new String[] { Manifest.Permission.WriteExternalStorage }, 1);
}
//Get the root path in android device.
if (Android.OS.Environment.IsExternalStorageEmulated)
{
root = Android.OS.Environment.ExternalStorageDirectory.ToString();
}
else
{
root = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
}
//Create directory and file
Java.IO.File myDir = new Java.IO.File(root + "/Syncfusion");
myDir.Mkdir();
Java.IO.File file = new Java.IO.File(myDir, fileName);
//Remove if the file exists
if (file.Exists())
{
file.Delete();
}
//Write the stream into the file
FileOutputStream outs = new FileOutputStream(file);
outs.Write(stream.ToArray());
outs.Flush();
outs.Close();
//Invoke the created file for viewing
if (file.Exists())
{
string extension = Android.Webkit.MimeTypeMap.GetFileExtensionFromUrl(Android.Net.Uri.FromFile(file).ToString());
string mimeType = Android.Webkit.MimeTypeMap.Singleton.GetMimeTypeFromExtension(extension);
Intent intent = new Intent(Intent.ActionView);
intent.SetFlags(ActivityFlags.ClearTop | ActivityFlags.NewTask);
Android.Net.Uri path = FileProvider.GetUriForFile(Forms.Context, Android.App.Application.Context.PackageName + ".fileprovider", file);
intent.SetDataAndType(path, mimeType);
intent.AddFlags(ActivityFlags.GrantReadUriPermission);
Forms.Context.StartActivity(Intent.CreateChooser(intent, "Choose App"));
}
}
private static void DeletePhotoFromDisk(Java.IO.File file)
{
try
{
var deleted = file.Delete();
if (!deleted)
{
_logger.LogInfo($"File has not been deleted: {file.AbsolutePath}");
}
}
catch (Exception e)
{
_logger.LogError($"Can't delete file: {file.AbsolutePath}", e);
}
finally
{
file.Dispose();
}
}