res/drawable/anim_download_icon.xml

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

    <!-- <item android:drawable="@drawable/anim_download_icon_1" android:state_pressed="true"/> -->
    <item android:drawable="@drawable/anim_download_icon_2" android:state_pressed="false"/>
    <item android:drawable="@drawable/anim_download_icon_2" android:state_pressed="true"/>

</selector>
1	<selector xmlns:android="http://schemas.android.com/apk/res/android">
2
3	<!-- <item android:drawable="@drawable/anim_download_icon_1" android:state_pressed="true"/> -->
4	<item android:drawable="@drawable/anim_download_icon_2" android:state_pressed="false"/>
5	<item android:drawable="@drawable/anim_download_icon_2" android:state_pressed="true"/>
6
7	</selector>