Scroll to a specific view in scroll view

Question

I have added a scrollview and the subchilds inside the scrollview. At some point i need to scroll to a specific view.

1. 

        

Answer 1

Here's a solution that works if the target view is not a direct child of your ScrollView:

public int findYPositionInView (View rootView, View targetView)
{
  return findYPositionInView (rootView, targetView, 0);
}


// returns -1 if targetView not found
private int findYPositionInView (View rootView, View targetView, int yCumulative)
{
  if (rootView == targetView)
    return yCumulative;

  if (rootView instanceof ViewGroup)
  {
    ViewGroup parentView = (ViewGroup)rootView;
    for (int i = 0;  i < parentView.getChildCount ();  i++)
    {
      View child = parentView.getChildAt (i);
      int yChild = yCumulative + (int)child.getY ();

      int yNested = findYPositionInView (child, targetView, yChild);
      if (yNested != -1)
        return yNested;
    }
  }

  return -1; // not found
}

Use it like this:

int yScroll = findYPositionInView (scrollView, targetView);
scrollView.scrollTo (0, yScroll);

Further, if you wish to set focus, do this:

targetView.requestFocus ();

And, if you want the keyboard to show, do this:

if (targetView instanceof EditText)
{
  targetView.post (new Runnable ()
  {
    @Override public void run ()
    {
      InputMethodManager imm = (InputMethodManager)context.getSystemService (Context.INPUT_METHOD_SERVICE);
      imm.showSoftInput (targetView, InputMethodManager.SHOW_FORCED);
    }
  });
}