`toPngBytes` throws with Exception about signature HOT 7 CLOSED

Yeah I dont know, hope my PR #69 goes through then we will have a nice updated package and the new toPngBytes method

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No you are not doing something wrong, its the toPngBytes method which sets fixed height and width values.
Current workaround would be something like this:

ui.Image? img = await _controller?.toImage(
  height: _controller?.defaultHeight ?? 0,
  width: _controller?.defaultWidth ?? 0
);

ByteData? byteData = await img?.toByteData(
  format: ui.ImageByteFormat.png
);

// Image data
var data = byteData?.buffer.asUint8List();

Where ui.Image is from import 'dart:ui' as ui;

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Awesome! Thanks, @yurtemre7.
That seems to do the trick, what is odd though is that it sometimes worked without any issues.

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For now you can just use version 5.0.1. It doesn't contain this bug.

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    //WIDTH AND HEIGHT IS OPTIONAL. IMAGE WILL BE CENTERED
    final ui.Image? image = await toImage(height: 500, width: 400);  // --> Here is the issue

Height and width by default are set, so, when u set a higher value on the widget it breaks
@yurtemre7 PR #69 might fix the issue, @DmitrySikorsky .

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Hi

sorry for late response, we did not have available maintenance window for a while. I am looking at PR #69 right now

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Fixed in 5.3.0

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