I defined a scrollview with a texteedit in my layout:

 <ScrollView android:fillViewport="true"
     android:layout_marginBottom="50dip"
     android:id="@+id/start_scroller"
     android:layout_height="fill_parent"
     android:layout_width="fill_parent"
     android:fadingEdge="none">
 <TextView  
    android:id="@+id/text"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" >
 </TextView>
 </ScrollView>

I add text to this ScrollView with the following method:

public void writeToLogView(String textMsg) {
   if (text.getText().equals("")) {
       text.append(textMsg);
   } else {
    text.append("\n" + textMsg);
    scroller.scrollBy(0, 1000000);
   }
}

As you can see i append the text and try to scroll to the bottom of the ScrollView. Unfortunately this doesn't worked correctly. It scrolls down, but not always, and not always to the bottom. Any hints?