android layout fixed size
I have next xml code

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >
    	
        <LinearLayout 
    	    android:layout_width="fill_parent"
    	    android:layout_height="wrap_content"
    	    android:orientation="vertical" 
    	    android:layout_weight=".10">
    	    <TextView 
    	        android:layout_width="fill_parent"
    	    	android:layout_height="fill_parent"
    	    	android:background="#aa0000"
    	    	android:text="top"/> 	
    	    
    	</LinearLayout>
    	<LinearLayout 
    	    android:layout_width="fill_parent"
    	    android:layout_height="wrap_content"
    	    android:orientation="vertical" 
    	    android:layout_weight=".70">
    	    
    	    <ScrollView 
    	        android:layout_width="fill_parent"
    	    	android:layout_height="wrap_content"
    	    	android:background="#00aa00">
    	    	<LinearLayout 
    		    	android:layout_width="fill_parent"
    		    	android:layout_height="wrap_content"
    		    	android:orientation="vertical">
    			    <TextView 
    			        
    			        android:layout_width="fill_parent"
    			    	android:layout_height="wrap_content"	    	
    			    	android:textSize="50pt"
    			    	android:text="center">
    			    </TextView>
    			    <TextView 
    			        
    			        android:layout_width="fill_parent"
    			    	android:layout_height="wrap_content"	    	
    			    	android:textSize="50pt"
    			    	android:text="center">
    			    </TextView>
    			    <TextView 
    			        
    			        android:layout_width="fill_parent"
    			    	android:layout_height="wrap_content"	    	
    			    	android:textSize="50pt"
    			    	android:text="center">
    			    </TextView>
    			    <TextView 
    			        
    			        android:layout_width="fill_parent"
    			    	android:layout_height="wrap_content"	    	
    			    	android:textSize="50pt"
    			    	android:text="center">
    			    </TextView>
    			    <TextView 
    			        
    			        android:layout_width="fill_parent"
    			    	android:layout_height="wrap_content"	    	
    			    	android:textSize="50pt"
    			    	android:text="center">
    			    </TextView>
    			</LinearLayout>
    	    </ScrollView>
    	</LinearLayout>    
    	<LinearLayout 
    	    android:layout_width="fill_parent"
    	    android:layout_height="wrap_content"
    	    android:orientation="vertical" 
    	    android:background="@android:color/white"
    	    android:layout_weight=".20">
    	    
    	    <TextView 
    	        android:layout_width="fill_parent"
    	    	android:layout_height="fill_parent"
    	    	android:background="#0000aa"
    	    	android:text="bottom"/>	
    	   </LinearLayout>        
        
    
    </LinearLayout>

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. 
android layout fixed size
===

I have next xml code

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >
    	
        <LinearLayout 
    	    android:layout_width="fill_parent"
    	    android:layout_height="wrap_content"
    	    android:orientation="vertical" 
    	    android:layout_weight=".10">
    	    <TextView 
    	        android:layout_width="fill_parent"
    	    	android:layout_height="fill_parent"
    	    	android:background="#aa0000"
    	    	android:text="top"/> 	
    	    
    	</LinearLayout>
    	<LinearLayout 
    	    android:layout_width="fill_parent"
    	    android:layout_height="wrap_content"
    	    android:orientation="vertical" 
    	    android:layout_weight=".70">
    	    
    	    <ScrollView 
    	        android:layout_width="fill_parent"
    	    	android:layout_height="wrap_content"
    	    	android:background="#00aa00">
    	    	<LinearLayout 
    		    	android:layout_width="fill_parent"
    		    	android:layout_height="wrap_content"
    		    	android:orientation="vertical">
    			    <TextView 
    			        
    			        android:layout_width="fill_parent"
    			    	android:layout_height="wrap_content"	    	
    			    	android:textSize="50pt"
    			    	android:text="center">
    			    </TextView>
    			    <TextView 
    			        
    			        android:layout_width="fill_parent"
    			    	android:layout_height="wrap_content"	    	
    			    	android:textSize="50pt"
    			    	android:text="center">
    			    </TextView>
    			    <TextView 
    			        
    			        android:layout_width="fill_parent"
    			    	android:layout_height="wrap_content"	    	
    			    	android:textSize="50pt"
    			    	android:text="center">
    			    </TextView>
    			    <TextView 
    			        
    			        android:layout_width="fill_parent"
    			    	android:layout_height="wrap_content"	    	
    			    	android:textSize="50pt"
    			    	android:text="center">
    			    </TextView>
    			    <TextView 
    			        
    			        android:layout_width="fill_parent"
    			    	android:layout_height="wrap_content"	    	
    			    	android:textSize="50pt"
    			    	android:text="center">
    			    </TextView>
    			</LinearLayout>
    	    </ScrollView>
    	</LinearLayout>    
    	<LinearLayout 
    	    android:layout_width="fill_parent"
    	    android:layout_height="wrap_content"
    	    android:orientation="vertical" 
    	    android:background="@android:color/white"
    	    android:layout_weight=".20">
    	    
    	    <TextView 
    	        android:layout_width="fill_parent"
    	    	android:layout_height="fill_parent"
    	    	android:background="#0000aa"
    	    	android:text="bottom"/>	
    	   </LinearLayout>        
        
    
    </LinearLayout>

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. 