Flutter InteractiveViewer not panning/scrolling

Question

InteractiveViewer(
  child: FlutterLogo(size: 1000),
)

FlutterLogo is bigger than the viewport and thus I wrapped it inside InteractiveViewer but it is not panning. I checked panEnabled and it is true by default. What am I missing?

Answer 1

If your widget is greater than viewport, you'll need to set constrained to false .

constrained : If set to false, then the child will be given infinite constraints. This is often useful when a child should be bigger than the InteractiveViewer.

InteractiveViewer(
  constrained: false, // Set it to false
  child: FlutterLogo(size: 1000),
)