<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/ic_all_off" android:state_window_focused="false"/>
<item android:drawable="@drawable/ic_all_off" android:state_enabled="false" android:state_focused="true" android:state_pressed="true"/>
<item android:drawable="@drawable/ic_all_off" android:state_enabled="false" android:state_focused="true"/>
<item android:drawable="@drawable/ic_all_off_pressed" android:state_focused="true" android:state_pressed="true"/>
<item android:drawable="@drawable/ic_all_off_pressed" android:state_focused="false" android:state_pressed="true"/>
<item android:drawable="@drawable/ic_all_off_pressed" android:state_focused="true"/>
</selector>
<item android:drawable="@drawable/ic_all_off" android:state_window_focused="false"/>
<item android:drawable="@drawable/ic_all_off" android:state_enabled="false" android:state_focused="true" android:state_pressed="true"/>
<item android:drawable="@drawable/ic_all_off" android:state_enabled="false" android:state_focused="true"/>
<item android:drawable="@drawable/ic_all_off_pressed" android:state_focused="true" android:state_pressed="true"/>
<item android:drawable="@drawable/ic_all_off_pressed" android:state_focused="false" android:state_pressed="true"/>
<item android:drawable="@drawable/ic_all_off_pressed" android:state_focused="true"/>
</selector>
本文介绍了一个用于Android应用程序中UI元素状态切换的选择器示例。通过定义不同状态下的图标资源,可以实现UI元素如按钮在获得焦点、按下等状态变化时显示不同的外观。
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