Scrollview problem

Question

Hi, i have a simple activity with a linearlayout and a scrollview. Dynamically i add a tablerow with one textview and a button. But when i launch app scrollview doesn't contain all tablerow... infact the first is "this is a text - 3 -" Rows from 1 to 3 are cut off from screen!

this is java code : int contatore = 0; final TableLayout tl = (TableLayout)findViewById(R.id.dettaglio); tl.setPadding(5, 0, 0, 0);

    if (text_to_do.moveToFirst())
    {   
        do {   
        contatore=contatore+1;
         int index = text_to_do.getColumnIndex("testo");
         String testo = text_to_do.getString(index);
          final TableRow tr = new TableRow(this);
          final TextView casella_testo = new TextView(this);

          if (contatore%2==0) {
             tr.setBackgroundColor(getResources().getColor(R.color.pari));
          }   
        else
        {
            tr.setBackgroundColor(getResources().getColor(R.color.dispari));
        }   

        testo = "This is a text - "+contatore + " -";          
          casella_testo.setText(testo);
          casella_testo.setWidth(200);
          casella_testo.setPadding(10, 0, 0, 10);
          Button butt = new Button(this);
          butt.setBackgroundResource(R.drawable.try_this);
          Typeface font = Typeface.createFromAsset(getAssets(), "BAARS___.TTF");
          casella_testo.setTextSize(20);
          casella_testo.setTypeface(font);
          tr.addView(casella_testo);
          tr.addView(butt);
          tr.setGravity(Gravity.CENTER);
          butt.setHeight(LayoutParams.WRAP_CONTENT);
          butt.setWidth(LayoutParams.WRAP_CONTENT);
         butt.setOnClickListener(new OnClickListener() {

             @Override
             public void onClick(View arg0) {
                // do something....
                  startActivity(intent);       
             }
          });
          tr.setPadding(0,10,0,0);
          tl.addView(tr,new TableLayout.LayoutParams(
                   LayoutParams.FILL_PARENT,
                   LayoutParams.FILL_PARENT));          

        } while (text_to_do.moveToNext());               
    }     

And XML

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:paddingLeft="0dip"
android:paddingRight="1dip"
android:orientation="vertical">

<ScrollView
android:id="@+id/scrllvwNo1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical|center_horizontal">

<TableLayout
android:id="@+id/dettaglio"
android:orientation="vertical"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_gravity="center"
android:stretchColumns="0">
</TableLayout>

</ScrollView>

</LinearLayout>

with 16 rows there is a problem... row from 1 to 3 are not show ! http://i30.tinypic.com/2vs0roh.jpg