Hey,
Working with XML design can be pain in the ass. This little code segment will let you divide two equal parts.

Markdown :
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:baselineAligned="false">
<RelativeLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1">
</RelativeLayout>
<RelativeLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1">
</RelativeLayout>
</LinearLayout>
Gist :
<LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal" android:baselineAligned="false"> <RelativeLayout android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1"> </RelativeLayout> <RelativeLayout android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1"> </RelativeLayout> </LinearLayout>