March 2013
Beginner to intermediate
580 pages
16h 11m
English
Content preview from Android Programming: The Big Nerd Ranch GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Laying Out the User Interface
By default, Eclipse opened activity_quiz.xml in Android’s graphical layout tool, which shows you a preview of the layout. The graphical layout tool can be useful, but for now you are going to work in XML to get a better understanding of how layouts work.
To get to the raw XML, select the tab at the bottom of the editor labeled activity_quiz.xml.
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" ...
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