I made (in Android Studio) a HorizontalScrollView which I can access from anywhere on the screen, meaning that where ever I scroll, be it on the top or the bottom of the screen, the ScrollView which is in the middle gets scrolled.
This is the code:
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
android:layout_marginRight="20dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:stretchColumns="1">
<ImageButton
android:id="@+id/somerandomid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:background="@drawable/image"
android:layout_marginLeft="20dp"
android:layout_marginTop="140dp" />
<ImageButton
android:id="@+id/somerandomid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:background="@drawable/image"
android:layout_marginLeft="20dp"
android:layout_marginTop="140dp" />
</LinearLayout>
</HorizontalScrollView>
Please post all of the code of this layout, although I might suggest using a specific height for horizontalSerollView to protect it from match_parent or wrap_content and use RelativeLayout as child.
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="your_height(not match_parent)"
android:id="@+id/horizontalScrollView"
android:scrollbars="none">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center">
<ImageButton
android:id="@+id/somerandomid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:background="@drawable/image"
android:layout_marginLeft="20dp"
android:layout_marginTop="140dp" />
<ImageButton
android:id="@+id/somerandomid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:background="@drawable/image"
android:layout_marginLeft="20dp"
android:layout_marginTop="140dp" />
</RelativeLayout>
</HorizontalScrollView>