Here is the xml in which ScrollView layout size will vary means it will zoom image on button click but my top headers and footer will always be in same position irrespective of zoom values.......
XML
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="@+id/layout_zoom_buttons"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:id="@+id/btn_zoomIn"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:src="@drawable/zoomin1" />
<ImageView
android:id="@+id/btn_zoomout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:src="@drawable/zoomin1" />
</LinearLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<com.example.imagetouchview.TouchImageView
android:id="@+id/imagezoom"
android:layout_width="fill_parent"
android:layout_height="400dp"
android:layout_gravity="center">
</com.example.imagetouchview.TouchImageView>
</ScrollView>
<LinearLayout
android:id="@+id/layout_buttons"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<ImageView
android:id="@+id/btn_email_fatwa"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:src="@drawable/zoomin1"
android:layout_weight="1"/>
<ImageView
android:id="@+id/btn_share_fatwa"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:src="@drawable/zoomin1"
android:layout_weight="1"/>
<ImageView
android:id="@+id/btn_save_fatwa"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:src="@drawable/zoomin1"
android:layout_weight="1"/>
</LinearLayout>
</LinearLayout>
this layout is fine in vertical orientation while when device orientatio changes to Horizontal the bottom buttons are invisible.I am following Salmans Ayub Answer For Image Zoomin and Out