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 Android Activity Lifecycle The Project Updating and Creating Layout Files

Orion Wolf-Hubbard
Orion Wolf-Hubbard
4,906 Points
Posted by Orion Wolf-Hubbard
Orion Wolf-Hubbard
4,906 Points

don't understand why he added the "xmlns:tools..."

he seems to explain it very briefly at the end of the video, and as far as I can tell its there just so we can see the text in the preview without it being seen in the app, is this correct or am I missing something?

Emily Conroyd
Emily Conroyd
6,512 Points
Emily Conroyd
Emily Conroyd
6,512 Points

Yes, this is correct. The previous module, Lists and Adapters also used the same tool to help with preparing the view before testing it.

Raul Astete
Raul Astete
7,805 Points
Raul Astete
Raul Astete
7,805 Points

Its correct! This is useful when we want to see some property in our view but only in the preview but bot when the app is running!