I guess you have seen the new Android design guidelines, with the new \"Floating Action Button\" a.k.a \"FAB\"
For instance this pink button:
With AppCompat 22, the FAB is supported for older devices.
Add the new support library in your build.gradle(app):
compile 'com.android.support:design:22.2.0'
Then you can use it in your xml:
To use elevation
and pressedTranslationZ
properties, namespace app
is needed, so add this namespace to your layout:
xmlns:app="http://schemas.android.com/apk/res-auto"