You have to achive this through the tileMode
.
put this image file on your drawable folder
then
drawable/dot_background.xml:
<?xml version="1.0" encoding="utf-8"?>
<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
android:src="https://stackoverflow.com/questions/48047303/@drawable/actual_pattern_image"
android:tileMode="repeat" />
then set this xml as background on your view
hope this will help help you
solved How to fill with dots in a view? [closed]