Hi

The latest release of the camera plugin (0.6.0) has started using an XFile. the saveTo() function seems to have a problem though where the lock on the file is not always being released before the function completes or something.

For example I was doing this:

XFile file = await _controller.takePicture();
final path = join(
  (await getExternalStorageDirectory()).path,
  '${DateTime.now()}.png',
);
file.saveTo(path);

...and then attempting to display the file on-screen immediately afterwards (like this: Image.file(File(path)). 2 times out of 3 it would work fine but sometimes I would get an error that the file could not be found. If I browse through the phone itself though I will find that the file does exist and I was using the correct path in code (I double-checked everything!).

To get around the problem I am now doing this:

XFile file = await _controller.takePicture();
final path = join(
  (await getExternalStorageDirectory()).path,
  '${DateTime.now()}.png',
);
Uint8List imageBytes = await file.readAsBytes();
await File(path).writeAsBytes(imageBytes);

The above approach doesn't suffer from the same problem, presumably because the Future is not returned by writeAsBytes() until the exclusive lock it has on the file (i.e. while writing to it) has been released.