How to select a particular image about esys-flutter-share

[kelegorm]

If you get widget with image you can render it into bytes. Wrap widget into RepaintBoundary (with key). Then find it and render:

final RenderRepaintBoundary boundary = _globalKey.currentContext.findRenderObject();
final image = await boundary.toImage();
final byteData = await image.toByteData(format: ImageByteFormat.png);
final pngBytes = byteData.buffer.asUint8List();