How do you get the current page number of a ViewPager for Android

Question

I want to know the current page position of the ViewPager  I create an adapter and set this adapter to the ViewPager  Now I want to know the current page number or position of the current view  because I want to start some extra events on that particular page    I used viewPager setCurrentItem 1   for setting the first item   Is there a similar method for getting the current page

User · Answer

There is no any method getCurrentItem   in viewpager i already checked the API

User · Answer

For this problem Onpagechange listener is the best one But it will also have one small mistake  that is it will not detect the starting time time of 0th position Once you will change the page it will starts to detect the Page selected position   For this problem I fount the easiest solution  1 You have to maintain the selected  position value then use it     2    Case 1   At  the starting of the position is always Zero          Case 2  Suppose if you set the current item means you will set that value into        maintain position 3 Then do your action with the use of that maintain in your activity     Public int maintain 0  myViewPager setOnPageChangeListener new ViewPager OnPageChangeListener              Override         public void onPageScrolled int i  float v  int i2                   Toast makeText MyActivity this  i    Is Selected    data size    Toast LENGTH SHORT  show                        Override         public void onPageSelected  int i                 here you will get the position of selected page             maintain   i                        Override         public void onPageScrollStateChanged int i                         updateButton setOnClickListener new OnClickListener               Override         public void onClick View v                 Toast makeText MyActivity this  i    Is Selected    data size    Toast LENGTH SHORT  show                data set maintain   Replaced   maintain                        myViewPager getAdapter   notifyDataSetChanged

User · Answer

You will figure out that setOnPageChangeListener is deprecated  use addOnPageChangeListener  as below   ViewPager addOnPageChangeListener new ViewPager OnPageChangeListener          Override     public void onPageScrolled int position  float positionOffset  int positionOffsetPixels                 Override     public void onPageSelected int position           if position    1       if you want the second page  for example              Your code here                      Override     public void onPageScrollStateChanged int state

User · Answer

in the latest packages you can also use  vp getCurrentItem     or  vp is the viewPager     pageListener   new PageListener    vp setOnPageChangeListener pageListener     you have to put a page change listener for your viewPager  There is no method on viewPager to get the current page   private int currentPage       private static class PageListener extends SimpleOnPageChangeListener              public void onPageSelected int position                    Log i TAG   page selected     position                      currentPage   position

User · Answer

There is a method object of ViewPager getCurrentItem   which returns the position of currently Viewed page of view pager

User · Answer

If you only want the position  vp getCurrentItem   will give it to you  no need to apply the onPageChangeListener   for that purpose alone

User · Answer

getCurrentItem    doesn t actually give the right position for the first and the last page I fixed it adding this code   public void CalcPostion             current   viewPager getCurrentItem         if   last    current   amp  amp   current    1   amp  amp   current    0             current   current   1          viewPager setCurrentItem current             if   last    1   amp  amp   current    1             last   0          current   0            display        last   current

User · Answer

The setOnPageChangeListener   method is deprecated  Use   addOnPageChangeListener OnPageChangeListener  instead    You can use OnPageChangeListener and getting the position inside onPageSelected   method  this is an example      viewPager addOnPageChangeListener new ViewPager OnPageChangeListener              Override         public void onPageScrolled int position  float positionOffset  int positionOffsetPixels                         Override         public void onPageSelected int position                Log d TAG   my position is       position                        Override         public void onPageScrollStateChanged int state                           Or just use getCurrentItem   to get the real position    viewPager getCurrentItem

[android] How do you get the current page number of a ViewPager for Android?

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