Hello Android Example

activity_main.xml xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/root_layout" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_margin="16dp" > android:id="@+id/spinner"

activity_main.xml xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:id="@+id/coordinator_layout" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#f7f9f5" >

activity_main.xml xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:id="@+id/coordinator_layout" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#bcbcbc" >

activity_main.xml xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:id="@+id/coordinator_layout" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#abe19f" >