How to swipe ViewPager images automatically using TimeTask

Question

Hi I am new in android and in my app I have a lot of images in my ArrayList that \'s why I want to swipe those images automatically for every 3 seconds with he

Answer 1

Your question is already answered here

Add this in your MainActivity.java

//...   
int currentPage = 0;
Timer timer;
final long DELAY_MS = 500;//delay in milliseconds before task is to be executed
final long PERIOD_MS = 3000; // time in milliseconds between successive task executions.


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main_layout);

    viewPager = (ViewPager) findViewById(R.id.viewPager);
    PagerAdapter adapter = new CustomAdapter(MainActivity.this,imageId,imagesName);
    viewPager.setAdapter(adapter);

    /*After setting the adapter use the timer */
    final Handler handler = new Handler();
    final Runnable Update = new Runnable() {
        public void run() {
            if (currentPage == NUM_PAGES-1) {
                currentPage = 0;
            }
            viewPager.setCurrentItem(currentPage++, true);
         }
     };

    timer = new Timer(); // This will create a new Thread 
    timer.schedule(new TimerTask() { // task to be scheduled
        @Override
        public void run() {
            handler.post(Update);
        }
    }, DELAY_MS, PERIOD_MS);
}