change viewpage swipe direction in RTL layer in android -

i try use rtl layerdirection in activity viewpager , tablayout.but in rtl layer viewpager swipe direction reversed , set currentitem viewpager , tablayout changed.

i try after , before setupwithviewpager dose not work.

any idea..!!

i try :

    mviewpager = (viewpager) findviewbyid(r.id.mviewpager );     mviewpager.setadapter(adapter);     mviewpager.setcurrentitem(mviewpager.getadapter().getcount() - 1,false);      tablayout = (tablayout) findviewbyid(r.id.tabs);     tablayout.setupwithviewpager(mviewpager); 

and :

    mviewpager = (viewpager) findviewbyid(r.id.container);     mviewpager.setadapter(msectionspageradapter);     tablayout = (tablayout) findviewbyid(r.id.tabs);     tablayout.setupwithviewpager(mviewpager);     mviewpager.setcurrentitem(mviewpager.getadapter().getcount() - 1,false); 

you can create custom pager adapter:

public class custom_pageradapter extends fragmentpageradapter{  /* * attributes: * * class attributes * * */  private arraylist<object> itemlist;  /* * autoruns: * * these methods called @ startup * * */  ///////////// //////////////////constructor: ////////////// public custom_pageradapter(fragmentmanager fm){     super(fm);     itemlist = new arraylist<>(); }  /* * setters: * * sets class attributes * * */  ///////////// //////////////////additem: ////////////// public void additem(object item){itemlist.add(item);}  /* * getters: * * gets class attributes * * */  ///////////// //////////////////getitem: ////////////// @override public fragment getitem(int position){     return (fragment) itemlist.get(getdirectionalpagerposition(position)); }  ///////////// //////////////////getcount: ////////////// @override public int getcount(){return itemlist.size();}  /* * other functions: * * class other functions * * */  ///////////// //////////////////getdirectionalpagerposition: //calculates pager position considering app direction public int getdirectionalpagerposition(int virtualposition){     int actualposition;     if(core.getdirection() == direction.ltr)//make own if         actualposition = virtualposition;     else         actualposition = getcount()-1-virtualposition;     return actualposition; }  ///////////// //////////////////getdirectionaltabposition: //calculates tab position considering app direction public int getdirectionaltabposition(int virtualposition){     int actualposition;     if(core.getdirection() == direction.ltr)         actualposition = virtualposition;     else{         actualposition = getcount()-2-virtualposition;         if(actualposition < 0)             actualposition = 0;         if(virtualposition > getcount()-2)             actualposition = getcount()-1;     }     return actualposition; }  ///////////// //////////////////getdirectionaltabpositionoffset: //calculates tab position offset considering app direction public float getdirectionaltabpositionoffset(float virtualpositionoffset){     float actualpositionoffset;     if(core.getdirection() == direction.ltr)         actualpositionoffset = virtualpositionoffset;     else         actualpositionoffset = 1-virtualpositionoffset;     return actualpositionoffset; } 

}

and use it:

/* * initializers: * * initialize components * * */  ///////////// //////////////////inittabbar: ////////////// private void inittabbar(){     main_tablyt = (customtablayout) findviewbyid(r.id.main_tablyt);     /** count of tabs must equal count of pages in {@link #initpager()} */     main_tablyt.addtab(main_tablyt.newtab().settext("tab 1"));     main_tablyt.addtab(main_tablyt.newtab().settext("tab 2"));     main_tablyt.addtab(main_tablyt.newtab().settext("tab 3"));     addtabbarontabselectedlistener(); }  ///////////// //////////////////initpager: ////////////// private void initpager(){     main_pgradp = new custom_pageradapter(getsupportfragmentmanager());     /** count of pages must equal count of tabs in {@link #inittabbar()} */     main_pgradp.additem(new view1());     main_pgradp.additem(new view2());     main_pgradp.additem(new view3());     main_viwpgr = (viewpager) findviewbyid(r.id.main_pager);     main_viwpgr.setadapter(main_pgradp);     main_viwpgr.setcurrentitem(main_pgradp.getdirectionalpagerposition(0));//first page considering app direction     addpageronpagechangelistener(); }  /* * listeners: * * these methods called after user action * * */  ///////////// //////////////////addtabbarontabselectedlistener: ////////////// public void addtabbarontabselectedlistener(){     main_tablyt.addontabselectedlistener(new tablayout.ontabselectedlistener(){         @override         public void ontabselected(tab tab){//selects pager item considering app direction             main_viwpgr.setcurrentitem(main_pgradp.getdirectionalpagerposition(tab.getposition()));         }         @override         public void ontabunselected(tab tab){}         @override         public void ontabreselected(tab tab){}     }); }  ///////////// //////////////////addpageronpagechangelistener: ////////////// private void addpageronpagechangelistener(){     main_viwpgr.addonpagechangelistener(new viewpager.onpagechangelistener(){         @override         public void onpagescrolled(int position, float positionoffset, int positionoffsetpixels){//sets tab bar scroll position considering app direction             main_tablyt.setscrollposition(main_pgradp.getdirectionaltabposition(position), main_pgradp.getdirectionaltabpositionoffset(positionoffset), false);         }         @override         public void onpageselected(int position){             tab tab = main_tablyt.gettabat(main_pgradp.getdirectionalpagerposition(position));             if(tab != null) tab.select();         }         @override         public void onpagescrollstatechanged(int state){}     }); }