XML : how to use prev button and next button change seekbar

In my TopRated.java file, I have an image view which changes when the seekbar is used. It also changes when the next and previous buttons are used. however, i want both buttons and the seeker to be in sync, that is, when the next button is pressed, i want it to also move the seeker up by one, and when the previous button is pressed, i want it to also move the seeker down by one. please help

This is my TopRated.java file

  import android.app.Activity;  import android.os.Bundle;  import android.view.View;  import android.widget.Button;  import android.widget.ImageView;  import android.widget.SeekBar;      public class TopRated extends Activity {  SeekBar imgseekbar;  ImageView iconimageview;  Button prevbutton;  Button nextbutton;  int progress=0;    @Override  protected void onCreate(Bundle savedInstanceState) {      super.onCreate(savedInstanceState);      setContentView(R.layout.toprated);      iconimageview=(ImageView)findViewById(R.id.imageView);      imgseekbar=(SeekBar)findViewById(R.id.seekBar);      prevbutton=(Button)findViewById(R.id.button8);      nextbutton=(Button)findViewById(R.id.button9);      iconimageview.setImageResource(R.drawable.diablo);        imgseekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {          @Override          public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {              updateImageResource(progress);          }            @Override          public void onStartTrackingTouch(SeekBar seekBar) {            }            @Override          public void onStopTrackingTouch(SeekBar seekBar) {            }      });      prevbutton.setOnClickListener(new View.OnClickListener() {          @Override          public void onClick(View v) {              progress--;              updateImageResource(progress);          }      });      nextbutton.setOnClickListener(new View.OnClickListener() {          @Override          public void onClick(View v) {              progress++;              updateImageResource(progress);          }      });  }    private void updateImageResource(int progress) {      if (progress==2) {          iconimageview.setImageResource(R.drawable.eye);      }else if (progress==3) {          iconimageview.setImageResource(R.drawable.facebook);      }else if (progress==4) {          iconimageview.setImageResource(R.drawable.google);      }else if (progress==5) {          iconimageview.setImageResource(R.drawable.house);      }else if (progress==6) {          iconimageview.setImageResource(R.drawable.mail);      }else if (progress==7) {          iconimageview.setImageResource(R.drawable.pen);      }else if (progress==8) {          iconimageview.setImageResource(R.drawable.photos);      }else if (progress==9) {          iconimageview.setImageResource(R.drawable.skype);      }else if (progress==10)      iconimageview.setImageResource(R.drawable.twitter);    }  }    

This is my toprated.xml file

  <?xml version="1.0" encoding="utf-8"?>    

  <SeekBar      android:layout_width="fill_parent"      android:layout_height="wrap_content"      android:id="@+id/seekBar"      android:layout_alignParentTop="true"      android:layout_centerHorizontal="true"      android:max="10"/>    <ImageView      android:layout_width="wrap_content"      android:layout_height="wrap_content"      android:id="@+id/imageView"      android:layout_below="@+id/seekBar"      android:layout_centerHorizontal="true"      android:minHeight="50dp"      android:minWidth="50dp"      android:background="@drawable/icon_animation"/>    <Button      android:layout_width="wrap_content"      android:layout_height="wrap_content"      android:text="Prev"      android:id="@+id/button8"      android:layout_alignBottom="@+id/imageView"      android:layout_toStartOf="@+id/imageView"      android:layout_marginRight="5dp" />    <Button      android:layout_width="wrap_content"      android:layout_height="wrap_content"      android:text="Next"      android:id="@+id/button9"      android:layout_alignBottom="@+id/imageView"      android:layout_toEndOf="@+id/button8"      android:layout_marginLeft="50dp" />    

I also have another xml which holds all my images, icon_animation.xml

please help! any help would be appreciated.