状态列表

state_enble

当前的view是否能够消费点击事件，

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

<!--this.findViewById(R.id.my_btn).setEnabled(boolean);-->
<!--android:enabled="false"-->
<!--代表这个view是否能够消费掉点击事件，false就是不能，true反之-->
<item android:drawable="@android:color/holo_blue_dark"
      android:state_enabled="false"/>
<item android:drawable="@android:color/holo_orange_dark"
      android:state_enabled="true"
    />
</selector>

state_pressed

view是否被压着，

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

<!--压-->
<item
    android:drawable="@color/colorAccent"
    android:state_pressed="true"/>

<!--没压-->
<item
    android:drawable="@color/colorPrimary"
    android:state_pressed="false"/>

</selector>

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state_hovered

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

<!--这个貌似不好用的赶脚-->
<item android:drawable="@color/colorPrimary"
      android:state_hovered="true"/>
<item android:drawable="@color/colorAccent"
      android:state_hovered="false"/>
</selector>

state_focused

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

<item android:drawable="@color/colorAccent"
      android:state_focused="true"/>
<item android:drawable="@color/colorPrimaryDark"
      android:state_focused="false"/>
</selector>

[图片上传失败...(image-dc322e-1539478300370)]
那两个控件是editview

state_checked

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


<item android:drawable="@color/colorPrimary"
      android:state_checked="true"
    />
<item android:drawable="@color/colorAccent"
      android:state_checked="false"/>
</selector>      

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state_window_focused

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

<!--如果当应用窗口有焦点（应用在前台）时应使用此项目，则值为“true”；
如果当应用窗口没有焦点（例如，通知栏下拉或对话框出现）时应使用此项目，则值为“false”。-->
<item android:drawable="@color/colorAccent"
      android:state_window_focused="true"/>
<item android:drawable="@color/colorPrimaryDark"
      android:state_window_focused="false"/>

</selector>

[图片上传失败...(image-afc318-1539478300370)]

enterFadeDuration 和 exitFadeDuration

<?xml version="1.0" encoding="utf-8"?>
<selector
android:enterFadeDuration="5000"
android:exitFadeDuration="5000"
xmlns:android="http://schemas.android.com/apk/res/android">


<item android:drawable="@color/colorPrimary"
      android:state_checked="true"
    />
<item android:drawable="@color/colorAccent"
      android:state_checked="false"/>
</selector>

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注：请记住，Android 将应用状态列表中第一个与对象当前状态匹配的项目。因此，如果列表中的第一个项目不含上述任何状态属性，则每次都会应用它，这就是默认值应始终放在最后的原因（如以下示例所示）。

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true"
      android:drawable="@drawable/button_pressed" /> <!-- pressed -->
<item android:state_focused="true"
      android:drawable="@drawable/button_focused" /> <!-- focused -->
<item android:state_hovered="true"
      android:drawable="@drawable/button_focused" /> <!-- hovered -->
<item android:drawable="@drawable/button_normal" /> <!-- default -->
</selector>

demo：https://github.com/lijinxiong/Select