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<table border="0" cellspacing="0" width="100%"><tr>
<td width="20%">[[An Android Studio Layout Editor ConstraintLayout Tutorial|Previous]]<td align="center">[[Android Studio Development Essentials - Java Edition|Table of Contents]]<td width="20%" align="right">[[Managing Android Constraints using Constraint Sets|Next]]</td>
<tr>
<td width="20%">An Android Studio Layout Editor ConstraintLayout Tutorial<td align="center"><td width="20%" align="right">Managing Constraints using Constraint Sets</td>
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.
== Manually Creating an XML Layout 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:
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<table border="0" cellspacing="0" width="100%"><tr>
<td width="20%">[[An Android Studio Layout Editor ConstraintLayout Tutorial|Previous]]<td align="center">[[Android Studio Development Essentials - Java Edition|Table of Contents]]<td width="20%" align="right">[[Managing Android Constraints using Constraint Sets|Next]]</td>
<tr>
<td width="20%">An Android Studio Layout Editor ConstraintLayout Tutorial<td align="center"><td width="20%" align="right">Managing Constraints using Constraint Sets</td>
</table>
