anim_public_loading.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/ico_public_loading1"
        android:duration="80" />
    <item
        android:drawable="@drawable/ico_public_loading2"
        android:duration="80" />
    <item
        android:drawable="@drawable/ico_public_loading3"
        android:duration="80" />
    <item
        android:drawable="@drawable/ico_public_loading4"
        android:duration="80" />
    <item
        android:drawable="@drawable/ico_public_loading5"
        android:duration="80" />
    <item
        android:drawable="@drawable/ico_public_loading6"
        android:duration="80" />
    <item
        android:drawable="@drawable/ico_public_loading7"
        android:duration="80" />
    <item
        android:drawable="@drawable/ico_public_loading8"
        android:duration="80" />
</animation-list>