Codes changes are not showing event after sync command

Hi every one,

I have a problem to run on android device. The problem is that i cant see my changes in running app!!!
I tried all command like: npx cap copy, npx cap update, npx cap sync. but none of them works!
please tell me what is the solution to update my app after changes in codes?!

Thanks for your help

Update: It seems that we must run : ionic build command after each codes changes and the update project using npx cap sync to reflect the changes!!!