Locking orientation on Android

lockOrient.java

    private void lockOrientation(){
        int orientation;
        int rotation = ((WindowManager) getActivity().getSystemService(
                Context.WINDOW_SERVICE)).getDefaultDisplay().getRotation();
        switch (rotation) {
            case Surface.ROTATION_0:
                orientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
                break;
            case Surface.ROTATION_90:
                orientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
                break;
            case Surface.ROTATION_180:
                orientation = ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;
                break;
            default:
                orientation = ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE;
                break;
        }

        getActivity().setRequestedOrientation(orientation);
    }

    private void unlockOrientation(){
        getActivity().setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
    }