Attribute is missing the Andriod namespace prefix


#1

hi -
just got andriod programming book (excellent) and pretty excited to dive in

I am going thru chapter one - Listing 1.2
I am using Andriod Studio (.8.9) for the environment on windows 7

I put the snippet below
I get the following error: name space prefix for
gravity=“center” and orientation=“vertical”

it will be great if I could get some insight on how to get this solved

thanks
behrooz

<LinearLayout
xmlns:android=“http://schemas.android.com/apk/res/android

android:layout_width="match_parent"
android:layout_height="match_parent"
andriod:gravity="center"
andriod:orientation="vertical">