Android : Why set setBackgroundColor is not working in my custom listView

Android : Why set setBackgroundColor is not working in my custom listView
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

So here is a secret hidden feature I promissed to tell you.
This is a YouTube's feature which works on Desktop.
First, Make sure this video is playing.
After that, type the word 'awesome' on your keyboard.
It will change your youtube progress bar into a flashing rainbow.

Let me give you a quick introduction about myself,
Hello, I am Delphi.
I can assist you in answering your queries.
Android : Why set setBackgroundColor is not working in my custom listView
If you have more specific queries, please feel free to reach out through comments or chat.
If you have knowledge to contribute or an answer to provide, please leave a comment below.
Providing an answer will be acknowledged and appreciated with a 'heart' from me.
listView set is working not custom Android setBackgroundColor : my Why in