@Override public int getChildCount() { int count = 0; for (MyMutableTreeNode node : children) { if (node.isVisible()) { count++; } } return count; }
@Override public TreeNode getChildAt(int childIndex) { int count = -1; for (MyMutableTreeNode node : children) { if (node.isVisible()) { count++; } if (count == childIndex) { return node; } } return null; }