example code for snackbar

I want Android code (java xml), for a snackbar that works in AIDE with Sdk target 28 build 21, with AIDE installed on an Android 9 version (samsung galaxy a10 phone) I want to code a simple Snackbar; no onClickListener, just the code to Show a Snackbar

require the complete code main.xml,MainActivity.java, AndroidManifest.xml,.build.gradle; please include import statement code on MainActivity.java, and dependencies code for build gradle

I create my apps using AIDE template app for java/xml/gradle. I require the code to be compatible with this coding method.

Thank You
Kim