getting width & height dynamically - layout file

<!--
################## start of myLayout.XML ################
-->

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="horizontal">
    <FrameLayout
        android:id="@+id/fLayout1"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_weight="1"
        android:background="#0f0"
    />
    <FrameLayout
        android:id="@+id/fLayout2"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_weight="1"
        android:background="#00f"
    />
</LinearLayout>

<!--
################## end of myLayout.XML ################
-->