Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Android Build a Simple Android App Creating the Screen Layout Setting Colors

Jeff Lichtman
Jeff Lichtman
9,752 Points
Posted by Jeff Lichtman
Jeff Lichtman
9,752 Points

My background color is not changing from white in the emulator. It shows in the design, but not the emulator.

Can anyone help?

<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_fun_facts" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="jltechnologies.funfacts.FunFactsActivity" tools:background="#66bb6a">

1 Answer

Seth Kroger
Seth Kroger
56,414 Points
Seth Kroger
Seth Kroger
56,414 Points

tools:background="#66bb6a" should be android:background="#66bb6a" Using tools: will only only show it in Andoird Studio's preview, which is useful if you want to add mock content while you design, but not set it as default content in the app.