Laying Out the User Interface
Currently, activity_quiz.xml defines the default activity layout. The defaults change frequently, but the XML will look something like Listing 1.1.
Listing 1.1 Default activity layout (activity_quiz.xml)
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".QuizActivity"> <TextView android:text="@string/hello_world" android:layout_width="wrap_content" ...
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