I have the following layout: I need to keep the button at the bottom of screen and it should be visible to the user. The rest of the layout should scroll.
Add android:layout_alignParentTop="true" in your scrollView and delete android:layout_below="@+id/scrollView1" in the bottomLinearLayout.
android:layout_alignParentTop="true"
android:layout_below="@+id/scrollView1"