什么是默认绘制的pressing列表项 [英] What is the default drawable for pressing a list item

问题描述

当用户presses一个ListView项目。（机器人：STATE_ pressed =真），它闪烁的暗黄色的（或者你可以preSS按住）

When the user presses a ListView item (android:state_pressed="true") it flashes a shade of yellow (or you can press and hold).

什么可绘制的是什么？因为我希望我自己的ListView项的颜色我已经创建了自己的选择，但我失去了pressed颜色。

What drawable is this? I've created my own selector because I want my own ListView item color , but I lose the pressed color.

有关于设置按钮，引用＃FFFF0000一个Android文档，但这样会产生红色的。

There's an Android doc about skinning buttons that references #ffff0000, but this produces red.

有谁知道它是什么，以及如何引用它？

Does anyone know what it is and how to reference it?

推荐答案

默认的系统资源可以在＆LT发现，Android的SDK＆GT; /平台/ android-＆LT;版＆GT; /数据/ RES 。特别是，该列表选择器中定义绘制/ list_selector_background.xml ：

The default system resources can be found in <android-sdk>/platforms/android-<version>/data/res. In particular, the list selector is defined in drawable/list_selector_background.xml:

<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:state_window_focused="false"
        android:drawable="@color/transparent" />

    <!-- Even though these two point to the same resource, have two states so the drawable will invalidate itself when coming out of pressed state. -->
    <item android:state_focused="true" android:state_enabled="false"
        android:state_pressed="true"
        android:drawable="@drawable/list_selector_background_disabled" />
    <item android:state_focused="true" android:state_enabled="false"
        android:drawable="@drawable/list_selector_background_disabled" />

    <item android:state_focused="true" android:state_pressed="true"
        android:drawable="@drawable/list_selector_background_transition" />
    <item android:state_focused="false" android:state_pressed="true"
        android:drawable="@drawable/list_selector_background_transition" />

    <item android:state_focused="true"
        android:drawable="@drawable/list_selector_background_focus" />

</selector>

这显示在preSS的绘制， list_selector_background_transition ，不是一个单一的颜色，但两个9片图像，黄色和白色的，有它们之间的动画过渡。

The drawable that is shown on a press, list_selector_background_transition, is not a single color but two 9-patch images, a yellow and a white one, with an animated transition between them.

<transition xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@android:drawable/list_selector_background_pressed"  />
    <item android:drawable="@android:drawable/list_selector_background_longpress"  />
</transition>

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