22. Manual XML Layout Design in Android Studio

While the design of layouts using the Android Studio Layout Editor tool greatly improves productivity, it is still possible to create XML layouts by manually editing the underlying XML. This chapter will introduce the basics of the Android XML layout file format.

22.1 Manually Creating an XML Layout

The structure of an XML layout file is actually quite straightforward and follows the hierarchical approach of the view tree. The first line of an XML resource file should ideally include the following standard declaration:

<?xml version="1.0" encoding="utf-8"?>

This declaration should be followed by the root element of the layout, typically a container view such as a layout manager. This is represented ...

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