if (!scheduled) {

                    translationTimer.schedule(new TimerTask() {

                        private int left;

                        @Override

                        public void run() {

                            runOnUiThread(new Runnable() {

                                @Override

                                public void run() {

                                    int width = tv.getWidth();

                                    tv.setLeft(++left);

                                    tv.setRight(left + width);

                                    DisplayMetrics metrics = new DisplayMetrics();

                                    getWindowManager().getDefaultDisplay().getMetrics(metrics);

                                    if (left > metrics.widthPixels) {

                                        left = -width;

                                    }

                                }

                            });

                        }

                    }, 0, 10);

                    scheduled = true;

                }