Android passing value why null? -

i'm quite new android programming.. , have problem.. want pass value, result null.. wonder why so.. can me? in advance. code this..

manager.java

string prize="5"; intent = new intent(manager.this, shop.class); i.putextra("key", prize); startactivity(i); 

shop.java

intent myintent = getintent();      string receive = myintent.getstringextra("key");      if (getintent().getextras() != null)     {                    textview tv = (textview)findviewbyid(r.id.textview2);     tv.settext(receive);     }      else     {         textview tv = (textview)findviewbyid(r.id.textview2);         tv.settext("value null");  //this result                                        //why null??     } 

the function getextras() returns bundle placed in intent using putextras(b). this:

intent = new intent(manager.this, shop.class); i.putextras(new bundle()); startactivity(i); 

since aren't using putextras function getintent().getextras() returns null. should this:

intent myintent = getintent();  string receive = myintent.getstringextra("key");  if (receive != null) {                textview tv = (textview)findviewbyid(r.id.textview2); tv.settext(receive); }  else {     textview tv = (textview)findviewbyid(r.id.textview2);     tv.settext("value null");  //this result                                    //why null?? }