Get other child that shares parent with the current view

If you know the ID of a child element then you can do the following:

ViewGroup row = (ViewGroup) v.getParent();
TextView textView = (TextView) row.findViewById(R.id.childID);  

If you can get a ViewParent, you can then cast it to a ViewGroup and get the View you need. Your code will look like this:

TextView textView = null;
ViewGroup row = (ViewGroup) v.getParent();
for (int itemPos = 0; itemPos < row.getChildCount(); itemPos++) {
    View view = row.getChildAt(itemPos);
    if (view instanceof TextView) {
         textView = (TextView) view; //Found it!
         break;
    }
}

That's it, assuming you have only one TextView in your row.