Android Layout - when to use app: vs android:?

Question

I\'ve been writing some Android apps but I don\'t really understand when to use app: and when to use android:. When styles are not being applied th

Answer 1

You can use the app namespace to have app compatibility with older API versions.

For example app:srcCompat="@drawable/customborder" has the same effects with android:background="@drawable/customborder" The difference is that the first will work correctly with older API's and the second will not display what you would like.