java - Parse the url to other Activity to load PDF from that url -

i have 2 activity's in app. 1 has 3 buttons , other has pdfview github "com.github.barteksc:android-pdf-viewer:2.6.1" trying load pdf url code. works me

public class pdfactivity extends appcompatactivity {      pdfview pdfview;      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_pdf);          pdfview = (pdfview) findviewbyid(r.id.pdfview);          new retrievepdfstream().execute("my url load pdf example http://sample.com/xyz.pdf");      }       class retrievepdfstream extends asynctask<string, void, inputstream>     {          @override         protected inputstream doinbackground(string... strings) {             inputstream inputstream = null;             try             {                 url url = new url(strings[0]);                 httpurlconnection urlconnection = (httpurlconnection)url.openconnection();                 if(urlconnection.getresponsecode() == 200)                 {                     inputstream = new bufferedinputstream(urlconnection.getinputstream());                 }             }             catch (ioexception e)             {                 return null;             }             return inputstream;         }          @override         protected void onpostexecute(inputstream inputstream) {             pdfview.fromstream(inputstream);         }     } } 

this works fine, have load pdf activity 1 other url, change url "new retrievepdfstream" when click button 1 load pdf in activity , button 2 load pdf activity.

any answers highly appreciated!

if understand correctly have 3 buttons , 2 actvities.
in ack1 have 3 buttons , in ack2 have pdf viewer. if click on ack1 button1 want load url1 ack2 , if click on ack1 button2 want load url2 form ack2 , on.... if requirement can use intent extras. form ack1 this:

button1.onclick(new onclicklistener{    publi void onclick(){         intent intent=new intent(this,ack2.class);         intent.putextras("url","pdf url1");     }} 

for button2 jst change "pdf url1" "pdf url2"
button3 jst change "pdf url1" "pdf url3"

in ack2 this: in oncreate() method:

    intent i=this.getintent();     string url=i.getextras("url"); 

from here url passed in first activity based on button clicked . if user clicked on button 1 "pdf url1", if clciked on button2 "pdf url2".. on...

edit:code reference dont copy &paste it...