Android Tutorial

Android Tutorial 155

android:text=”@string/test_string”
android:textColor=”@color/text_color”
android:gravity=”center”
android:textSize=”@dimen/text_size”>

main.xml layout file displays in the emulator.

The preceding layout describes all the

visual elements on a screen. In this

example, a LinearLayout control is used as

a container for other user interface

controls—here, a single TextView that

displays a line of text.

Designing Layouts in Eclipse

Layouts can be designed and previewed in

Eclipse using the Resource editor

functionality provided by the Android plug-

in. If you click the project file /res /layout

/main.xml (provided with any new Android

project), you see a Layout tab, which

shows you the preview of the layout, and a main.xml tab, which

shows you the raw XML of the layout file.