Styles and Themens(5)样式文件Style.xml中各元素的含义

Style Resource

See also

　　Styles and Themes

　　A style resource defines the format and look for a UI. A style can be applied to an individual View (from within a layout file) or to an entire Activity or 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 referenced using the value provided in the name attribute (not the name of the XML file). As such, 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 name will 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:

1,<resources>

　　Required. This must be the root node.

　　No attributes.

2,<style>

　　Defines a single style. Contains <item> elements.

　　

attributes:

name	String. Required. A name for the style, which is used as the resource ID to apply the style to a View, Activity, or application.
parent	Style resource. Reference to a style from which this style should inherit style properties.

3,<item>

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

　　

attributes:

name	Attribute resource. Required. The name of the style property to 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 a 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!" />