iboss-mini-android-bjmnls/res/drawable/animation_left_list.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/chatto_voice_playing_left_f1"
        android:duration="150">
    </item>
    <item
        android:drawable="@drawable/chatto_voice_playing_left_f2"
        android:duration="150">
    </item>
    <item
        android:drawable="@drawable/chatto_voice_playing_left_f3"
        android:duration="150">
    </item>

</animation-list>