Android official documentation: (3) resources-3.6.8 Style

A style resource defines the format and look for a UI. A style can be applied to an individualView(From within a layout file) or toan entireActivityOr application (from within the manifest file ).

For more information about creating and applying styles, please readStyles and Themes.

Note:A style is a simple resource that is referencedusing the value provided innameAttribute (not the name of the XML file). Assuch, you can combine style resources with other simple resources in the one XML file, under one<resources>Element.

File location:

res/values/filename.xml
The filename is arbitrary. The element's nameWill be used as the resource ID.

Resource reference:

In XML: @[package:]style/style_name

Syntax:

<?xml version="1.0" encoding="utf-8"?><resources>    <style        name="style_name"        parent="@[package:]style/style_to_inherit">        <item            name="[package:]style_property_name"            >style_value</item>    </style></resources>

Elements:

<resources>

Required.This must be the root node.

No attributes.

<style>

Defines a single style. Contains <item>Elements.

Attributes:

name

String. Required. A name for the style, which is used as theresource ID to apply the style to a View, Activity, or application.

parent

Style resource. Reference to a style from which thisstyle shoshould inherit style properties.

<item>

Defines a single property for the style. Must be a child of <style>Element.

Attributes:

name

Attribute resource. Required. The name of the style propertyto be defined, with a package prefix if necessary (for example android:textColor).

Example:

XML file for the style (saved in res/values/):

<?xml version="1.0" encoding="utf-8"?><resources>    <style name="CustomText" parent="@style/Text">        <item name="android:textSize">20sp</item>        <item name="android:textColor">#008</item>    </style></resources>

XML file that applies the style to TextView(Saved in res/layout/):

<?xml version="1.0" encoding="utf-8"?><EditText    style="@style/CustomText"    android:layout_width="fill_parent"    android:layout_height="wrap_content"    android:text="Hello, World!" />