ScrollView .scrollTo not working? Saving ScrollView position on rotation.

Question

Ok.. I must be overlooking something real simple here, but i think i'm trying to do something fairly basic.. Simply retain the scrollbar position of a ScrollView on orientation change...

Here is the code for my onSaveInstanceState and onRestoreInstanceState.. sView is the container for the ScrollView layout. Within my scrollview is a linearlayout with a lot of textviews.

    @Override 
public void onSaveInstanceState(Bundle outState) 
{
    //---save whatever you need to persist—

    outState.putInt("sViewX",sView.getScrollX());
    outState.putInt("sViewY",sView.getScrollY());

super.onSaveInstanceState(outState);

}

@Override
public void onRestoreInstanceState(Bundle savedInstanceState) 
{
    super.onRestoreInstanceState(savedInstanceState);

    sViewX = savedInstanceState.getInt("sViewX");   
    sViewY = savedInstanceState.getInt("sViewY");

    sView.scrollTo(sViewX, sViewY);

}

If I set a Toast with the values of sViewX and sViewY on the Restore, the values are kept and correct.

Edit: I just tried to do a sView.scrollTo(0,150); in my onCreate.. just to see if that would open the activity at 150px down, and it didn't. I think my issue has to do with the .scrollTo method.

Answer 1

I figured it out.

Since I'm using setText to TextViews in my onCreate, calling .scrollTo won't work..

so now i'm using the following:

sView.post(new Runnable() {
  @Override
  public void run() {
     sView.scrollTo(sViewX, sViewY);
  } 

});