android - trouble with nested layouts -

i'm beginning android , have gotten myself stuck. i've made simple app/view. idea draw line-maze in top, motion buttons on bottom. app draws x couple lines in frame, works. problem buttons being drawn far down, , clipped in height.

i assume problem in layout xml:

<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android"     android:orientation="vertical"     android:layout_width="fill_parent"     android:layout_height="fill_parent">          <framelayout             android:layout_width="fill_parent"             android:layout_height="fill_parent"             android:layout_weight="1" >               <none.maze.mazeview              android:id="@+id/maze"                 android:layout_width="fill_parent"                         android:layout_height="fill_parent"                         />              <relativelayout                 android:layout_width="fill_parent"                 android:layout_height="fill_parent" >                 <textview                  android:id="@+id/text"                     android:text="@string/maze_layout_text_text"                     android:visibility="visible"                     android:layout_width="wrap_content"                     android:layout_height="wrap_content"                     android:layout_centerinparent="true"                     android:gravity="center_horizontal"                     android:textcolor="#ff8888ff"                     android:textsize="24sp"/>             </relativelayout>          </framelayout>          <linearlayout             android:orientation="horizontal"             android:layout_width="fill_parent"             android:layout_height="wrap_content"             android:layout_weight="1" >                           <button                 android:id="@+id/left"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:text="left"                  android:layout_weight="1"                  />              <button                 android:id="@+id/forward"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:text="forward"                  android:layout_weight="1"                  />              <button                 android:id="@+id/right"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:text="right"                  android:layout_weight="1"                  />          </linearlayout>  </linearlayout> 

i think shouldn't use layout_height="fill_parent" , layout_weight @ same time. try set layout_height="0dip" , layout_weight="1" framelayout , layout_height="wrap_content" lower linearlayout. lower linearlayout mustn't have layout_weight attribute.