This blog was opened for 5 months and it has 57 posts now,but the poor thing is by now no one has commented on any articles by now..How miserable and pathetic...Even if I‘ve been writing some bullshit you should at least give me some response...Never mind, I was originally meant to writer to remind myself.
And sometimes I feel a little reluctant to read English than Chinese, even when I carefully read them I feel they are illustrated so clearly even more explicit than many Chinese vague articles.When I learn something from google‘s developer.android.com , I want to note them here.But I think why, firstly, why should I note them when I can visit them any time on google‘s website; secondly ,why use Chinese?
There‘s a proverb in China called "A good memory is not as good as a broken pen point" ,meaning that one would remember something better when he or she write it down.Ok now I decide to write things down when I learn something from android developers.
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Styles in Android share a similar philosophy to cascading stylesheets in web design—they allow you to separate the design from the content.
For example, by using a style, you can take this layout XML:
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#00FF00"
android:typeface="monospace"
android:text="@string/hello" />
And turn it into this:
<TextView
style="@style/CodeFont"
android:text="@string/hello" />
All of the attributes related to style have been removed from the
layout XML and put into a style definition
calledCodeFont, which is then applied with
the style attribute.
A theme is a style applied to
an entire Activity or
application, rather than an individual View.
When a style is applied as a theme, every View in the Activity or
application will apply each style property that it supports. For
example, you can apply the
same CodeFont style as a
theme for an Activity and then all text inside that Activity will have
green monospace font.
1.To create a set of styles, save an XML file in
the res/values/ directory of your project.
The name of the XML file is arbitrary, but it must use
the .xml extension and be saved in
the res/values/ folder.(I
thought it could be saved in any folder,is it just a
recommendation?)
2.The root node of the XML file must
be <resources>.
3.For each style you want to create, add
a <style> element to the file with
a name that uniquely
identifies the style (this attribute is required). Then add
an <item> element for each property of
that style, with a name that declares the
style property and a value to go with it (this attribute is required). The value
for the <item> can be a
keyword string, a hex color, a reference to
another resource type, or other value depending on the
style property. Here‘s an example file with a single
style:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="CodeFont" parent="@android:style/TextAppearance.Medium">
<item name="android:layout_width">fill_parent</item>
<item name="android:layout_height">wrap_content</item>
<item name="android:textColor">#00FF00</item>
<item name="android:typeface">monospace</item>
</style>
</resources>
-----it‘s Tomb-sweeping Day , to be continued-----
Android-Styles and Themes (From API Guide),布布扣,bubuko.com
Android-Styles and Themes (From API Guide)
原文：http://www.cnblogs.com/larrylawrence/p/3647266.html