Fix an exception in PackageInstaller am: 4b1e2d8d

        // window height needed to show all content. We have to

        // re-add the window to force it to be resized if needed.

        View decor = getWindow().getDecorView();

        if (decor.getParent() != null) {

            getWindowManager().removeViewImmediate(decor);

            getWindowManager().addView(decor, decor.getLayoutParams());

            if (mViewHandler instanceof GrantPermissionsViewHandlerImpl) {

                ((GrantPermissionsViewHandlerImpl) mViewHandler).onConfigurationChanged();

            }

        }

    }

    @Override

    public boolean dispatchTouchEvent(MotionEvent ev) {