Exception in TouchExplorer due to invalid pointer id.

    // which would perform a click and tapping and holding a long press.

    private final int mTouchExplorationTapSlop;

    // Context handle for accessing resources.

    private final Context mContext;

    // The InputFilter this tracker is associated with i.e. the filter

    // which delegates event processing to this touch explorer.

    private final InputFilter mInputFilter;

            ViewConfiguration.get(context).getScaledTouchExplorationTapSlop();

        mDraggingDistance = mTouchExplorationTapSlop * COEFFICIENT_DRAGGING_DISTANCE;

        mPointerTracker = new PointerTracker(context);

        mContext = context;

        mHandler = new Handler(context.getMainLooper());

        mSendHoverDelayed = new SendHoverDelayed();

        mAccessibilityManager = AccessibilityManager.getInstance(context);

                // Send a hover for every finger down so the user gets feedback

                // where she is currently touching.

                mSendHoverDelayed.forceSendAndRemove();

                final int pointerIdBits = (1 << event.getActionIndex());

                final int pointerIndex = event.getActionIndex();

                final int pointerIdBits = (1 << event.getPointerId(pointerIndex));

                mSendHoverDelayed.post(event, MotionEvent.ACTION_HOVER_ENTER, pointerIdBits,

                        policyFlags, DELAY_SEND_HOVER_MOVE);

            } break;