session-android/res/layout/typing_indicator_view.xml

<?xml version="1.0" encoding="utf-8"?>
<merge
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="horizontal"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="org.thoughtcrime.securesms.components.TypingIndicatorView">

    <View
        android:id="@+id/typing_dot1"
        android:layout_width="10dp"
        android:layout_height="10dp"
        android:layout_margin="2dp"
        android:scaleX="0.5"
        android:scaleY="0.5"
        android:alpha="0.5"
        android:background="@drawable/circle_white" />

    <View
        android:id="@+id/typing_dot2"
        android:layout_width="10dp"
        android:layout_height="10dp"
        android:layout_margin="2dp"
        android:scaleX="0.5"
        android:scaleY="0.5"
        android:alpha="0.5"
        android:background="@drawable/circle_white" />

    <View
        android:id="@+id/typing_dot3"
        android:layout_width="10dp"
        android:layout_height="10dp"
        android:layout_margin="2dp"
        android:scaleX="0.5"
        android:scaleY="0.5"
        android:alpha="0.5"
        android:background="@drawable/circle_white" />

</merge>