How to make this smooth transparency transition?

Question

Android

I recently started learning Flutter, and now I have a question:
How to make this smooth transparency transition? (circled in green in the picture)

Answer 1

Usually a gradient is put on top of it, from the background color to transparent

Answer 2

It is necessary to press the view drawable element with a gradient from completely transparent to ~ 50% white on top of the list to the top

Answer 3

Stack + Container with gradient in decortation .