Example doesn't work out of the box

[mrshootingstar]

Steps to repro:

1. clone this repo.
2. run the example
3. click on screen1 button.

You get this error:

Incorrect GestureDetector arguments.

Having both a pan gesture recognizer and a scale gesture recognizer is redundant; scale is a superset of pan.

Just use the scale gesture recognizer.

[littlelioncjt]

The same problem

[crumped]

@mrshootingstar @littlelioncjt based on the answer -> https://stackoverflow.com/a/66122623
You have to add a list of gestures to CanvasTouchDetector
it looks something like this:

CanvasTouchDetector(
gesturesToOverride: [GestureType.onTapDown],
builder: (context) => CustomPaint(...))