关于selector 里面的坑

之前做selector 没注意到select里面的状态顺序问题,原来select的状态是从上到下的,如果匹配到合适的状态就返回不理会下面的状态了.

之前这样写,发现点击 完全没反应,,原来点击时候并没有focused!!!   isFocused() 返回时false
之前版本android 点击那里同时这个控件会获取到焦点,现在点击该控件并没有获取焦点.......

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@color/background_material_dark" android:state_pressed="false" />
    <item android:drawable="@color/background_material_dark" android:state_focused="false"/>
    <item android:drawable="@color/white" android:state_pressed="true" />
    <item android:drawable="@color/white" android:state_focused="true"/>
    <item android:drawable="@color/background_material_dark" />

</selector>

所以 改成 成

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:drawable="@color/background_material_dark" android:state_pressed="false" />
    <item android:drawable="@color/white" android:state_pressed="true" />
    <item android:drawable="@color/background_material_dark" />

</selector>

另外在 background设置color 的 selector 会报错......这个color 的selector 用在textColor 里面没问题..

参考:

http://www.oschina.net/question/2287919_243265

https://developer.android.com/guide/topics/resources/color-list-resource.html         Color State List Resource

http://blog.youkuaiyun.com/imesong/article/details/47629299