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There are situations when you may want to change the background color of a layout using java code in your Activity.java file, then you can do it by using setBackgroundColor() method on your layout. You can also assign a color from color.xml resource file using 4 : : res/values/color.xml You can also add transparency to the color by adding 2 more hex numbers after the # (hash) symbol.Įxample 2 : android:background="#FFFFFFCC"Įxample 3 : android:background="#00FFFFCC"įF => Completely Opaque and 00 => Completely transparent. You can directly specify the value as HEX color code as we do for CSS files in HTML. Let's see how we can set background color's to these Layouts with various options that we have, How to set Background Color to Android Layout XML file!Īndroid:background="" is the attribute used to set background for any Layout file. that holds the subviews like Buttons, TextView, EditText, ImageView e.t.c together. RelativeLayout, LinearLayout, TableLayout, TableRow, GridLayout e.t.c. Every Android Activity class file has an associated layout.xml file to design the view.