blocks|key|3148605|text|是的，你使用<resource>标签。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3148606|如下所示：|3148607|<?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>|code-block|syntax|javascript|3148608|link+from+official+website|3148609|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.android.com/guide/topics/ui/themes.html^0|6|A|0|0|0|0|Q|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Z|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|10|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|11|8|@]|D|@$9|12|A|13|1|14]]|E|$]]|$1|O|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]]]

Yes , you can.Just use <code>&lt;resource&gt;</code> tag. 
like this: 

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;resources&gt;
 &lt;style name="CodeFont" parent="@android:style/TextAppearance.Medium"&gt;
 &lt;item name="android:layout_width"&gt;fill_parent&lt;/item&gt;
 &lt;item name="android:layout_height"&gt;wrap_content&lt;/item&gt;
 &lt;item name="android:textColor"&gt;#00FF00&lt;/item&gt;
 &lt;item name="android:typeface"&gt;monospace&lt;/item&gt;
 &lt;/style&gt;
&lt;/resources&gt;
</code></pre>

<a href="http://developer.android.com/guide/topics/ui/themes.html" rel="nofollow">link from official website</a>

blocks|key|3148621|text|在res/values文件夹中创建attr.xml。在这里你可以定义你的属性：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3148622|<declare-styleable+name="">
++++<attr+name="myCustomValue"+format="integer/boolean/whatever"+/>
</declare-styleable>|code-block|syntax|javascript|3148623|​|3148624|当您想要在布局文件中使用它时，您必须添加|3148625|xmlns:customname="http://schemas.android.com/apk/res/your.package.name"|3148626|然后您可以将该值与customname:myCustomValue=""一起使用|offset|length|style|CODE|3148627|entityMap^0|0|0|0|0|0|9|R|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|X|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|Y|8|@]|9|@]|A|$E|F]]|$1|M|3|N|5|6|7|Z|8|@$O|10|P|11|Q|R]]|9|@]|A|$]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

In your res/values folder create attr.xml. There you can define your attribues:




<pre><code>&lt;declare-styleable name=""&gt;
 &lt;attr name="myCustomValue" format="integer/boolean/whatever" /&gt;
&lt;/declare-styleable&gt;
</code></pre>



When you then want to use it in your layout file you have to add

<pre><code>xmlns:customname="http://schemas.android.com/apk/res/your.package.name"
</code></pre>

and then you can use the value with <code>customname:myCustomValue=""</code>

blocks|key|2934152|text|是。简短指南：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2934153|1.创建属性XML|2934154|在/res/values/attrs.xml中创建一个新的XML文件，其属性和类型为|offset|length|style|CODE|2934155|<?xml+version="1.0"+encoding="UTF-8"?>
<resources>
++++<declare-styleable+name="MyCustomElement">
++++++++<attr+name="distanceExample"+format="dimension"/>
++++</declare-styleable>
</resources>|code-block|syntax|javascript|2934156|基本上，您必须为包含所有自定义属性(这里只有一个)的视图设置一个<declare-styleable+/>。我从来没有找到可能的类型的完整列表，所以我想你需要查看其中一个的源代码。我知道的类型有引用(对另一个资源)、颜色、布尔值、维度、浮点数、整数和字符串。它们是不言自明的。|2934157|2.在布局中使用属性|2934158|它的工作方式与上面的相同，但有一个例外。您的自定义属性需要有自己的XML名称空间。|2934159|<com.example.yourpackage.MyCustomElement
+++xmlns:customNS="http://schemas.android.com/apk/res/com.example.yourpackage"
+++android:layout_width="fill_parent"
+++android:layout_height="wrap_content"
+++android:text="Element..."
+++customNS:distanceExample="12dp"
+++/>|2934160|非常直截了当。|2934161|3.使用传递的值|2934162|修改自定义视图的构造函数以解析这些值。|2934163|public+MyCustomElement(Context+context,+AttributeSet+attrs)+{
++++super(context,+attrs);

++++TypedArray+ta+=+context.obtainStyledAttributes(attrs,+R.styleable.MyCustomElement,+0,+0);
++++try+{
++++++++distanceExample+=+ta.getDimension(R.styleable.MyCustomElement_distanceExample,+100.0f);
++++}+finally+{
++++++++ta.recycle();
++++}
++++//+...
}|2934164|在本例中，distanceExample是一个私有成员变量。TypedArray得到了很多其他的东西来解析其他类型的值。|2934165|就是这样。使用View中的解析值对其进行修改，例如，在onDraw()中使用它来相应地更改外观。|2934166|entityMap^0|0|0|1|L|0|0|W|L|0|0|0|0|0|0|0|0|5|F|U|A|0|7|4|R|8|0^^$0|@$1|2|3|4|5|6|7|1A|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1B|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|1C|8|@$F|1D|G|1E|H|I]]|9|@]|A|$]]|$1|J|3|K|5|L|7|1F|8|@]|9|@]|A|$M|N]]|$1|O|3|P|5|6|7|1G|8|@$F|1H|G|1I|H|I]]|9|@]|A|$]]|$1|Q|3|R|5|6|7|1J|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1K|8|@]|9|@]|A|$]]|$1|U|3|V|5|L|7|1L|8|@]|9|@]|A|$M|N]]|$1|W|3|X|5|6|7|1M|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|6|7|1N|8|@]|9|@]|A|$]]|$1|10|3|11|5|6|7|1O|8|@]|9|@]|A|$]]|$1|12|3|13|5|L|7|1P|8|@]|9|@]|A|$M|N]]|$1|14|3|15|5|6|7|1Q|8|@$F|1R|G|1S|H|I]|$F|1T|G|1U|H|I]]|9|@]|A|$]]|$1|16|3|17|5|6|7|1V|8|@$F|1W|G|1X|H|I]|$F|1Y|G|1Z|H|I]]|9|@]|A|$]]|$1|18|3|-4|5|6|7|20|8|@]|9|@]|A|$]]]|19|$]]

Yes. Short guide:

<h2>1. Create an attribute XML</h2>

Create a new XML file inside <code>/res/values/attrs.xml</code>, with the attribute and it's type

<pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
&lt;resources&gt;
 &lt;declare-styleable name="MyCustomElement"&gt;
 &lt;attr name="distanceExample" format="dimension"/&gt;
 &lt;/declare-styleable&gt;
&lt;/resources&gt;
</code></pre>

Basically you have to set up one <code>&lt;declare-styleable /&gt;</code> for your view that contains all your custom attributes (here just one). I never found a full list of possible types, so you need to look at the source for one I guess. Types that I know are reference (to another resource), color, boolean, dimension, float, integer and string. They are pretty self-explanatory

<h2>2. Use the attributes in your layout</h2>

That works the same way you did above, with one exception. Your custom attribute needs it's own XML namespace.

<pre><code>&lt;com.example.yourpackage.MyCustomElement
 xmlns:customNS="http://schemas.android.com/apk/res/com.example.yourpackage"
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 android:text="Element..."
 customNS:distanceExample="12dp"
 /&gt;
</code></pre>

Pretty straight forward.

<h2>3. Make use of the values you get passed</h2>

Modify the constructor of your custom view to parse the values.

<pre><code>public MyCustomElement(Context context, AttributeSet attrs) {
 super(context, attrs);

 TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.MyCustomElement, 0, 0);
 try {
 distanceExample = ta.getDimension(R.styleable.MyCustomElement_distanceExample, 100.0f);
 } finally {
 ta.recycle();
 }
 // ...
}
</code></pre>

<code>distanceExample</code> is a private member variable in this example. <code>TypedArray</code> got lot's of other things to parse other types of values. 

And that's it. Use the parsed value in your <code>View</code> to modify it, e.g. use it in <code>onDraw()</code> to change the look accordingly.

I know it is possible to create custom UI element (by way of View or specific UI element extension). But is it possible to define new properties or attributes to newly created UI elements (I mean not inherited, but brand new to define some specific behavior I am not able to handle with default propertis or attributes)

e.g. element my custom element:

<pre><code>&lt;com.tryout.myCustomElement
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 android:text="Element..."
 android:myCustomValue=&lt;someValue&gt;
/&gt;
</code></pre>

So is it possible to define MyCustomValue?

Thx

Android - custom UI with custom attributes

我知道可以创建自定义UI元素(通过视图或特定的UI元素扩展)。但是，是否可以为新创建的UI元素定义新的属性或属性(我的意思是不是继承的，而是全新的，以定义一些我无法使用默认属性或属性处理的特定行为)例如，元素我的自定义元素：<com.tryout.myCustomElement android:layout_wid...

问Android -具有自定义属性的自定义UI
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