ViewPager postion android studio -

i designed pager contains imageview , put images in assets folder , make arraylist contains image location in assets folder , image number , description each image , when swipe the pager finger should change image , put image number , description in 2 text view 1 image number , second text view description images swipe write no problem problem text views don't show right position displayed image show image number , description next image doesn't show yet problem did. here code

public class mainactivity extends appcompatactivity { custompageradapter mcustompageradapter; viewpager mviewpager; int clk=0; textview txtayaname; textview txtpage; linearlayout co1; linearlayout co2;  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);       txtayaname=(textview) findviewbyid(r.id.textview);     txtpage=(textview) findviewbyid(r.id.textview2);      co1=(linearlayout) findviewbyid(r.id.co1) ;     co2=(linearlayout) findviewbyid(r.id.co2) ;       arraylist<items> imagepaths = new arraylist<items>();     imagepaths.add(new items("p1.png", 1, "image_1"));     imagepaths.add(new items("p2.png", 2, "image_2"));     imagepaths.add(new items("p3.png", 3, "image_3"));     imagepaths.add(new items("p4.png", 4, "image_4"));     imagepaths.add(new items("p5.png", 5, "image_5"));     imagepaths.add(new items("p6.png", 6, "image_6"));     imagepaths.add(new items("p7.png", 7, "image_7"));     imagepaths.add(new items("p8.png", 8, "image_8"));     imagepaths.add(new items("p9.png", 9, "image_9"));     imagepaths.add(new items("p10.png", 10, "image_10"));             mcustompageradapter = new custompageradapter(this,imagepaths);      mviewpager = (viewpager) findviewbyid(r.id.pager);     mviewpager.setadapter(mcustompageradapter);     mviewpager.setcurrentitem(0);  }      class custompageradapter extends pageradapter {      context mcontext;     layoutinflater mlayoutinflater;     arraylist<items> imagepaths = new arraylist<items>();           public custompageradapter(context context,arraylist<items> imagepaths) {         mcontext = context;         this.imagepaths=imagepaths;         mlayoutinflater = (layoutinflater) mcontext.getsystemservice(context.layout_inflater_service);     }      @override     public int getcount() {         return imagepaths.size();     }      @override     public boolean isviewfromobject(view view, object object) {         return view == ((linearlayout) object);     }       @override     public object instantiateitem(viewgroup container, final int position) {          if(clk==0) {             co1.setvisibility(view.gone);             co2.setvisibility(view.gone);         }         else{             co1.setvisibility(view.visible);             co2.setvisibility(view.visible);         }          view itemview = mlayoutinflater.inflate(r.layout.pager_item, container, false);                 final imageview imageview = (imageview) itemview.findviewbyid(r.id.imageview);         imageview.setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view v) {                   if(clk==0){                     clk=1;                     co1.setvisibility(view.visible);                     co2.setvisibility(view.visible);                 }                 else{                     clk=0;                     co1.setvisibility(view.gone);                     co2.setvisibility(view.gone);                 }               }         });                  try {             // input stream             inputstream ims = getassets().open(imagepaths.get(position).location);             // load image drawable             drawable d = drawable.createfromstream(ims, null);             // set image imageview             imageview.setimagedrawable(d);              txtayaname.settext(imagepaths.get(position).ayaname);             txtpage.settext(string.valueof(imagepaths.get(position).pagnum));             txtpage.setonclicklistener(new view.onclicklistener() {                 @override                 public void onclick(view v) {                     toast.maketext(getapplication(),"page number:"+imagepaths.get(position).pagnum,toast.length_long).show();                 }             });         }         catch(ioexception ex) {}            container.addview(itemview);          return itemview;     }      @override     public void destroyitem(viewgroup container, int position, object object) {           container.removeview((linearlayout) object);      }   } }