android - Communication between SlidingTabLayout tabs -

i've searched lot on how communicate between fragments using slidingtablayout haven't got answer. know using actionbar wanted new way android lollipop using slidingtablayout. tried this-> http://android-er.blogspot.in/2012/06/communication-between-fragments-in.html wanted material design. referred link http://www.android4devs.com/2015/01/how-to-make-material-design-sliding-tabs.html making material design sliding tabs. now wanted know how communicate between sliding tabs. i've tried lot couldn't find answer looking for. appreciated.

the cleanest way define interface activity contains fragments implement. how solved this:

first define interface in it's own file, because has visible other classes.

public interface fragmentcommunication {     public void printmessage(string message);     ....     } 

in activity need implement interface

public class mainactivity extends actionbaractivity implements fragmentcommunication {        ....     public void printmessage(string message)     {         system.out.println(message);     } } 

finally in fragments can hosting activity getactivity() , use communication methods cast activity implemented communication interface so:

((fragmentcommunication) getactivity()).printmessage("hello fragment!"); 

edit: further pass message other fragments this: since tabs extend fragment best create interface

public interface receiverinterface {     public void receivemessage(string str); } 

then implement in tabs

public class tab1 extends fragment implements receiverinterface {     .... code .....     public void receivestring(string str)     {         //use str     } } 

to further send message other fragments required activity sees them. example modify printmessage() activity implements

    public void printmessage(string message)     {         system.out.println(message);         //send message came 1 fragment         if (tabfragment1 instanceof receiverinterface){             ((receiverinterface) tabfragment1).receivemessage(message);         }     }