Android - how to set margin relative to another control?
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I'm really new to android and would appreciate any help from you.
I have a screen with different templates for two kind of products. Each template is a separate xml file where I place a bunch of controls. Every control has it's own exact place in the screen which I define with margins.
The problem is I don't know how long is going to be a text in the upper TextView. If there is a one line everything looks fine, but a few lines destroy it. 
Is there any way to stretch upper textview and at the same time keep all the rest controls relative to this textview?
The code is above

        <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:background="@color/regBackground"
        android:orientation="vertical" >
    
        <FrameLayout
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:background="@color/regBackground" >
    
            <TextView
                android:id="@+id/txtProductNameScreenD"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="right"
                android:layout_marginLeft="10dp"
                android:layout_marginRight="18dp"
                android:layout_marginTop="10dp"
                android:text="@string/empty"
                android:textColor="@color/_black"
                android:textSize="16sp"
                android:textStyle="bold"
                android:lines="1"
                android:ellipsize="end"
                android:scrollHorizontally="true"
                android:singleLine="true" >
            </TextView>
    
            <ImageView
                android:id="@+id/imgProductBcgD"
                android:layout_width="300dp"
                android:layout_height="263dp"
                android:layout_gravity="center_horizontal"
                android:layout_marginTop="40dp"
                android:src="@drawable/frame_product_screen" >
            </ImageView>
    
            <ImageView
                android:id="@+id/imgProductScreenD"
                android:layout_width="250dp"
                android:layout_height="260dp"
                android:layout_gravity="center_horizontal"
                android:layout_marginTop="42dp"
                android:background="@color/_white" >
            </ImageView>
    
            <ImageView
                android:id="@+id/imgProductScreendiscD"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="top|center"
                android:layout_marginTop="205dp"
                android:src="@drawable/discount_bkg_product_screen" >
            </ImageView>
    
            <TextView
                android:id="@+id/txtProdScreenPrice"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="right|top"
                android:layout_marginRight="45dp"
                android:layout_marginTop="220dp"
                android:ellipsize="end"
                android:lines="1"
                android:scrollHorizontally="true"
                android:singleLine="true"
                android:text="@string/empty"
                android:textColor="@color/_black"
                android:textSize="18sp" >
            </TextView>
    
            <TextView
                android:id="@+id/txtPriceShekelD1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="right|top"
                android:layout_marginRight="80dp"
                android:layout_marginTop="230dp"
                android:ellipsize="end"
                android:lines="1"
                android:scrollHorizontally="true"
                android:singleLine="true"
                android:text="@string/shekel_symbol"
                android:textColor="@color/_gray"
                android:textSize="10sp" />
    
            <TextView
                android:id="@+id/txtBeforeDiscD"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="right|top"
                android:layout_marginRight="25dp"
                android:layout_marginTop="237dp"
                android:ellipsize="end"
                android:lines="1"
                android:scrollHorizontally="true"
                android:singleLine="true"
                android:text="@string/before_discount"
                android:textColor="@color/_gray"
                android:textSize="10sp" />
    
            <TextView
                android:id="@+id/txtProdScreenDiscount"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="right|top"
                android:layout_marginRight="140dp"
                android:layout_marginTop="220dp"
                android:ellipsize="end"
                android:lines="1"
                android:scrollHorizontally="true"
                android:singleLine="true"
                android:text="@string/empty"
                android:textColor="@color/_orange"
                android:textSize="18sp" >
            </TextView>
    
            <TextView
                android:id="@+id/txtDiscountD"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="right|top"
                android:layout_marginRight="145dp"
                android:layout_marginTop="237dp"
                android:ellipsize="end"
                android:lines="1"
                android:scrollHorizontally="true"
                android:singleLine="true"
                android:text="@string/bonus"
                android:textColor="@color/_gray"
                android:textSize="10sp" />
    
            <TextView
                android:id="@+id/txtProdScreenDiscountPrice"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="left|top"
                android:layout_marginLeft="45dp"
                android:layout_marginTop="220dp"
                android:ellipsize="end"
                android:lines="1"
                android:scrollHorizontally="true"
                android:singleLine="true"
                android:text="@string/empty"
                android:textColor="@color/_black"
                android:textSize="18sp" >
            </TextView>
    
            <TextView
                android:id="@+id/txtPriceShekelD2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="left|top"
                android:layout_marginLeft="30dp"
                android:layout_marginTop="230dp"
                android:ellipsize="end"
                android:lines="1"
                android:scrollHorizontally="true"
                android:singleLine="true"
                android:text="@string/shekel_symbol"
                android:textColor="@color/_gray"
                android:textSize="10sp" />
    
            <TextView
                android:id="@+id/txtAfterDiscD"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="left|top"
                android:layout_marginLeft="30dp"
                android:layout_marginTop="237dp"
                android:ellipsize="end"
                android:lines="1"
                android:scrollHorizontally="true"
                android:singleLine="true"
                android:text="@string/after_discount"
                android:textColor="@color/_gray"
                android:textSize="10sp" />
    
            <Button
                android:id="@+id/btnShareFacebookD"
                android:layout_width="300dp"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:layout_marginTop="255dp"
                android:background="@drawable/facebook_button_product_screen" >
            </Button>
    
            <TextView
                android:id="@+id/txtDatePSDiscD"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="right|center_horizontal"
                android:layout_marginRight="90dp"
                android:layout_marginTop="315dp"
                android:text="@string/exp_date"
                android:textColor="@color/_gray"
                android:textSize="14sp" >
            </TextView>
    
            <TextView
                android:id="@+id/txtDateProductScreenD"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="left|center_horizontal"
                android:layout_marginLeft="90dp"
                android:layout_marginTop="315dp"
                android:text="@string/empty"
                android:textColor="@color/_blue"
                android:textSize="14sp" >
            </TextView>
    
            <ImageView
                android:id="@+id/imgSeparatorProductScreenD"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:layout_marginTop="345dp"
                android:src="@drawable/separator_product_screen" >
            </ImageView>
    
            <TextView
                android:id="@+id/txtDescriptionProductScreenD"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="right"
                android:layout_marginLeft="20dp"
                android:layout_marginRight="20dp"
                android:layout_marginTop="355dp"
                android:inputType="textMultiLine"
                android:text="@string/empty"
                android:textColor="@color/_black"
                android:textSize="12sp" >
            </TextView>
        </FrameLayout>
    
    </LinearLayout>