Below code will help you to created SeekBar function in android. In android SeekBar is used by the end user, the user can drag the left and right to move the progress of runing file like audio song, video song etc. In the below code example, I have described how to make SeekBar in android.

Step(1)-xml.Layout-

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.javacodegeeks.android.seekbar.MainActivity" >

    <SeekBar
        android:id="@+id/seekBar1"
        android:layout_width="250dp"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginTop="21dp"
        android:max="10"/>

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/seekBar1"
        android:layout_marginLeft="29dp"
        android:layout_marginTop="14dp" />

</RelativeLayout>

Step(2)-MainActivity-

 public class MainActivity extends Activity{

     private SeekBar seekBar;
     private TextView textView;

     @Override
     protected void onCreate(Bundle savedInstanceState) {

      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      initializeVariables();


      textView.setText("Covered: " + seekBar.getProgress() + "/" + seekBar.getMax());

      seekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
          int progress = 0;

          @Override
          public void onProgressChanged(SeekBar seekBar, int progresValue, boolean fromUser) {
              progress = progresValue;
              Toast.makeText(getApplicationContext(), "Changing seekbar's progress", Toast.LENGTH_SHORT).show();
          }

          @Override
          public void onStartTrackingTouch(SeekBar seekBar) {
              Toast.makeText(getApplicationContext(), "Started tracking seekbar", Toast.LENGTH_SHORT).show();
          }

          @Override
          public void onStopTrackingTouch(SeekBar seekBar) {
              textView.setText("Covered: " + progress + "/" + seekBar.getMax());
              Toast.makeText(getApplicationContext(), "Stopped tracking seekbar", Toast.LENGTH_SHORT).show();
          }
       });
     }
     private void initializeVariables() {
         seekBar = (SeekBar) findViewById(R.id.seekBar1);
         textView = (TextView) findViewById(R.id.textView1);
     }
}