java - how to update seekbar using a edittext -

i read example of how show progres of seekbar edittext web page:

simple seekbar in android

now problem how change seekbar if introduce number inside edittext box? help

if can acces web page post code:

main:

<?xml version="1.0" encoding="utf-8"?> <relativelayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >  <textview     android:id="@+id/textview1"     android:layout_width="fill_parent"     android:layout_height="wrap_content"     android:text="@string/hello" />  <edittext     android:id="@+id/edittext1"     android:layout_width="fill_parent"     android:layout_height="wrap_content"     android:layout_alignparentleft="true"     android:layout_margintop="94dp" >      <requestfocus /> </edittext>  <seekbar     android:id="@+id/seekbar1"     android:layout_width="fill_parent"     android:layout_height="wrap_content"     android:layout_alignparentleft="true"     android:layout_below="@+id/textview1"     android:layout_margintop="38dp" />     </relativelayout> 

and java code:

import android.app.activity; import android.os.bundle; import android.widget.edittext; import android.widget.seekbar; import android.widget.seekbar.onseekbarchangelistener;   public class seekbaractivity extends activity  { /** called when activity first created. */ @override public void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.main);      seekbar sb=(seekbar) findviewbyid(r.id.seekbar1);     final edittext et=(edittext) findviewbyid(r.id.edittext1);      sb.setonseekbarchangelistener(new onseekbarchangelistener()     {         @override         public void onstoptrackingtouch(seekbar seekbar)         {         }         @override         public void onstarttrackingtouch(seekbar seekbar)         {         }         @override         public void onprogresschanged(seekbar seekbar, int progress,         boolean fromuser)         {         //---change font size of edittext---          et.settext(string.valueof(progress));         }         });         }       } 

use addtextchangedlistener

a quick example :

//et , sk class variables et=(edittext)findviewbyid(r.id.edittext); sk = (seekbar)findviewbyid(r.id.seekbar);  et.addtextchangedlistener(new textwatcher() {     @override     public void beforetextchanged(charsequence s, int start, int count, int after) {      }      @override     public void ontextchanged(charsequence s, int start, int before, int count) {      }      @override     public void aftertextchanged(editable s) {         try{             //update seekbar value after entering number             sk.setprogress(integer.parseint(s.tostring()));         } catch(exception ex) {}     } });