sheishuoAPP/uikit/res/drawable/nim_audio_animation_list_left.xml

<?xml version="1.0" encoding="utf-8"?>
<animation-list
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:oneshot="false">
  	<item android:drawable="@drawable/nim_audio_animation_list_left_1" android:duration="300"></item>
  	<item android:drawable="@drawable/nim_audio_animation_list_left_2" android:duration="300"></item>
  	<item android:drawable="@drawable/nim_audio_animation_list_left_3" android:duration="300"></item>
</animation-list>