seek bar changing text size

seek bar changing text size References i want to change the text size of an edit text using seek bar and every time i close the activity and reopen it the seek bar automatically increase the text size, this is the code package com.e_orthodoxy.orthodox_prayers; public class WakeupActivity extends Activity { private SharedPreferences prefs; private SeekBar seekbar; private EditText edittext; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_wakeup); seekbar = (SeekBar) findViewById(R.id.seekBar1); edittext = (EditText) findViewById(R.id.id_wakeup_txt); prefs = getPreferences(MODE_PRIVATE); float fs = prefs.getFloat(\"fontsize\", 12); seekbar.setProgress((int)fs); edittext.setTextSize(seekbar.getProgress()); seekbar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() { @Override public void onStopTrackingTouch(SeekBar seekBar){ prefs = getPreferences(MODE_PRIVATE); SharedPreferences.Editor ed = prefs.edit(); ed.putFloat(\"fontsize\", edittext.getTextSize()); ed.commit(); } @Override public void onStartTrackingTouch(SeekBar seekBar){ } @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser){ edittext.setTextSize(progress); } }); } @Override public void onBackPressed() { Intent intent_wakeup_back = new Intent (WakeupActivity.this, DailyPrayersActivity.class); startActivity(intent_wakeup_back); finish(); } }