Android Layout Demo

gistfile1.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    
    android:layout_width="match_parent"
    android:layout_height="match_parent"
>
    <SeekBar 
        android:id="@+id/size" 

        android:layout_height="wrap_content" 
        android:layout_width="match_parent" 
        
        android:layout_centerVertical="true"
        
        android:progress="100"
        
        android:layout_marginTop="10dp"
        android:layout_marginBottom="10dp"
    />
    
    <LinearLayout
        android:id="@+id/top"
        
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        
        android:layout_above="@id/size"
        
        android:orientation="vertical"
        
        android:weightSum="6"
    >
        <ImageView 
            android:layout_width="match_parent"
            android:layout_height="0px"
            android:layout_weight="3"
            
            android:background="#F00"
        />
        <ImageView 
            android:layout_width="match_parent"
            android:layout_height="0px"
            android:layout_weight="2"
            
            android:background="#0F0"
        />
        <ImageView 
            android:layout_width="match_parent"
            android:layout_height="0px"
            android:layout_weight="1"
            
            android:background="#00F"
        />
    </LinearLayout>    
    
    <LinearLayout
        android:id="@+id/bottom"
        
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        
        android:layout_below="@id/size"
        
        android:orientation="horizontal"
        
        android:weightSum="6"
    >
        <ImageView 
            android:layout_width="0px"
            android:layout_height="match_parent"
            android:layout_weight="1"
            
            android:background="#00F"
        />
        <ImageView 
            android:layout_width="0px"
            android:layout_height="match_parent"
            android:layout_weight="2"
            
            android:background="#0F0"
        />
        <ImageView 
            android:layout_width="0px"
            android:layout_height="match_parent"
            android:layout_weight="3"
            
            android:background="#F00"
        />
    </LinearLayout>    
    
    
</RelativeLayout>