ring-android/app/src/main/res/layout/frag_conversation.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".client.ConversationActivity">

    <ListView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/hist_list"
        android:layout_weight="1"
        android:transcriptMode="alwaysScroll"
        android:stackFromBottom="true"
        android:divider="@null"
        android:background="#ebeff0"
        android:listSelector="@android:color/transparent"
        tools:listitem="@layout/item_textmsg" />

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:background="#e3c1c1"
        android:id="@+id/ongoingcall_pane">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:text="Ongoing call"
            android:id="@+id/textView2"
            android:layout_centerVertical="true"
            android:layout_centerHorizontal="true"
            android:layout_margin="10dp" />
    </RelativeLayout>

    <ImageView
        android:layout_width="fill_parent"
        android:layout_height="1dp"
        android:id="@+id/divider"
        android:layout_gravity="center_horizontal"
        android:background="#bdbdbd" />

    <LinearLayout
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@android:color/white"
        android:elevation="6dp">

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/msg_input_txt"
            android:layout_weight="1" />

        <ImageButton
            android:layout_width="wrap_content"
            android:layout_height="fill_parent"
            android:id="@+id/msg_send"
            android:src="@drawable/ic_send_black_24dp"
            android:tint="@android:color/darker_gray"
            android:background="@android:color/transparent"
            android:padding="8dp" />
    </LinearLayout>

</LinearLayout>