android layout fixed size
<p>I have next xml code</p>

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" &gt;

    &lt;LinearLayout 
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" 
        android:layout_weight=".10"&gt;
        &lt;TextView 
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:background="#aa0000"
            android:text="top"/&gt;    

    &lt;/LinearLayout&gt;
    &lt;LinearLayout 
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" 
        android:layout_weight=".70"&gt;

        &lt;ScrollView 
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:background="#00aa00"&gt;
            &lt;LinearLayout 
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical"&gt;
                &lt;TextView 

                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"            
                    android:textSize="50pt"
                    android:text="center"&gt;
                &lt;/TextView&gt;
                &lt;TextView 

                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"            
                    android:textSize="50pt"
                    android:text="center"&gt;
                &lt;/TextView&gt;
                &lt;TextView 

                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"            
                    android:textSize="50pt"
                    android:text="center"&gt;
                &lt;/TextView&gt;
                &lt;TextView 

                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"            
                    android:textSize="50pt"
                    android:text="center"&gt;
                &lt;/TextView&gt;
                &lt;TextView 

                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"            
                    android:textSize="50pt"
                    android:text="center"&gt;
                &lt;/TextView&gt;
            &lt;/LinearLayout&gt;
        &lt;/ScrollView&gt;
    &lt;/LinearLayout&gt;    
    &lt;LinearLayout 
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" 
        android:background="@android:color/white"
        android:layout_weight=".20"&gt;

        &lt;TextView 
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:background="#0000aa"
            android:text="bottom"/&gt; 
       &lt;/LinearLayout&gt;        


&lt;/LinearLayout&gt;
</code></pre>

<p>In the main LinearLayout i have three LinearLayout. For the first LinearLayout i need set 100px. For the third LinearLayout i need set 200px. And all other size for second LinearLayout. </p>
