up for livestream updates.(https://developer.android.com/dev-summit)
LinearLayout(/reference/android/widget/LinearLayout.html) is a view group that aligns all
children in a single direction, vertically or horizontally. You can specify the layout direction
with the android:orientation
(/reference/android/widget/LinearLayout.html#attr_android:orientation) attribute.
Note: For better performance and tooling support, you should instead build your layout with
Linear Layout
