Setting background colour of Android layout element

Question

I am trying to, somewhat clone the design of an activity from a set of slides on Android UI design. However I am having a problem with a very simple task.

I have cre

Answer 1

4 possible ways, use one you need.

1. Kotlin

val ll = findViewById(R.id.your_layout_id)
ll.setBackgroundColor(ContextCompat.getColor(this, R.color.white))

2. Data Binding

OR more useful statement-

3. XML

4. Java

LinearLayout ll = (LinearLayout) findViewById(R.id.your_layout_id);
ll.setBackgroundColor(ContextCompat.getColor(this, R.color.white));