Index: FormView.java =================================================================== --- FormView.java (revision 495616) +++ FormView.java (working copy) @@ -74,6 +74,10 @@ } public float getMaximumSpan(final int axis) { + boolean isAxis = (axis == View.X_AXIS) | (axis == View.Y_AXIS); + if (!isAxis) { + throw new IllegalArgumentException("Invalid axis: " + axis); + } if (getComponent() == null || getParent() == null) { return EMPTY_SPAN; }