i m giving u a demo.this layout will work on all size layout,this will definitely help u @Yugesh. weight works percentage-wise on all screen.
<?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" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical" >
<RelativeLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight=".30"
android:gravity="center_horizontal" >
<ImageView
android:id="@+id/image1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_launcher" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/image1"
android:src="@drawable/ic_launcher" />
</RelativeLayout>
<Button
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight=".30"
android:text="30%" />
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight=".20"
android:text="20%" />
<Button
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight=".20"
android:text="20%" />
</LinearLayout>
</RelativeLayout>
further more,if there is any query,then please ask...