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[Flutter/dart] Method 'addPostFrameCallback' cannot be called on 'WidgetsBinding?' because ...


Phenomenon

When I try to build with Flutter I get the following error


Method 'addPostFrameCallback' cannot be called on 'WidgetsBinding?' because it is potentially null


By following the log, it seems that flutter_redux is issuing it.


The environment is Flutter 3.7.0, flutter_redux 0.10.0



Cause and Solution

I don't know the exact cause, but it seems to be a compatibility issue between the versions of Flutter and the flutter_redux library.

When I dropped flutter_redux to 0.9.0, the above error did not occur and I was able to build successfully.



Reference

https://github.com/brianegan/flutter_redux/issues/233


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