In this example, I will share how to fadein a decorationImage in flutter. You might be able to write a new AnimatedDecorationImage by taking part of the code from DecorationImage and editing it, but that would be pretty complicated.
What I’d recommend is instead to use a stack to simulate the same thing as DecorationImage. This would allow you to use the FadeInImage widget.
That would look something like this:
<your widget, I assume a container?>
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