Question

我从框架单元的风格、xml文档中复制这一代码。

<style name="Theme">

    <item name="colorForeground">@android:color/bright_foreground_dark</item>
    <item name="colorForegroundInverse">@android:color/bright_foreground_dark_inverse</item>
    <item name="colorBackground">@android:color/background_dark</item>

。

<style name="Theme。Black">
    <item name="android:windowBackground">@android:color/black</item>
    <item name="android:colorBackground">@android:color/black</item>
</style>

As you see, they all have a attribute name which s value is windowBackground。 But the formar has a android: and the latter doesn t。 Is it really necessary to write a android: prefix in android framework?

Answer 1

Found this to be an interesting question and tried exploring to find the answer.. This is what I found..

http://developer.android.com/guide/topics/resources/e-resource.html

<?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>

item - Defines a single property for the style. Must be a child of a 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).

http://developer.android.com/guide/topics/mani.4/1999//mani.4/1999/-intro.html” rel=“noreferer”http://developer.android.com/guide/topics/mani/pop-intro.html

Resource values Some attributes have values that can be displayed to users — for example, a label and an icon for an activity. The values of these attributes should be localized and therefore set from a resource or theme. Resource values are expressed in the following format,

@[package:]type:name

where the package name can be omitted if the resource is in the same package as the application, type is a type of resource — such as "string" or "drawable" — and name is the name that identifies the specific resource. For example: Values from a theme are expressed in a similar manner, but with an initial ? rather than @ :

?[package:]type:name

最后,我尝试在没有刺.的情况下给予其属性:尽管它成功地进行了汇编,但还是提出了例外。

Answer 2

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安德列包含一些标准资源,如风格、主题和布局。为了获得这些资源,你的资源参考符合海底包裹的名称。例如,Andan提供一种可供你使用的布局资源,用于列入<编码>的物项清单。清单Adapter:

setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, myarray));

举例来说,简单的清单_项目1是平台为<代码>中的项目确定的一种非专用资源。清单。你们可以这样做,而不是为自己设定清单项目。 (关于使用<代码>ListView的更多信息,见《清单》。)

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