android - geting extra in activityForResult -

i have been googleling far no luck. have app in wich start activityforresult , in put string extra.

edit couldn't post complex code since on table, got on laptop here code

the activityforresult:

@override protected void oncreate(bundle saved) {     super.oncreate(saved);     setcontentview(r.layout.camera);     = new aquery(this);     output = getintent().getextras().getstring("output");//here, nothing passed!!!!!!!!     //log.d("out",output);     /** check if device has camera */     if (this.getpackagemanager().hassystemfeature(packagemanager.feature_camera_any)){         text ="yes";          //now check cam features         if(this.getpackagemanager().hassystemfeature(packagemanager.feature_camera_front))             front ="yes";         if(this.getpackagemanager().hassystemfeature(packagemanager.feature_camera_flash))             flash = "yes";         if(this.getpackagemanager().hassystemfeature(packagemanager.feature_camera))             back= "yes";     }else{             text = "this device not have camera";             //---set data pass back---             data.putextra("vid",text);             setresult(result_ok, data);              //---close activity---              finish();     }     if (c != null) {         c.release();         c = null;     }      m = new mediarecorder();     c = getcamerainstance(this);      camera.parameters parameters =              c.getparameters();      // create our preview view , set content of our activity.     mpreview = new camerapreview(this, c);     int orien =getresources().getconfiguration().orientation;     if(orien ==1){         parameters.setrotation(0); // set rotation save picture         c.setdisplayorientation(90);         parameters.setpicturesize(640, 480);         pic_orientation = "landscape";     }else{         parameters.setrotation(0); // set rotation save picture         c.setdisplayorientation(0);         parameters.setpicturesize(640, 480);         pic_orientation = "portrait";     }     if (camera.getnumberofcameras() < 2) {         //todo     }     fileuri = getoutputmediafileuri();     c.setparameters(parameters);     m.setcamera(c);     framelayout preview = (framelayout) findviewbyid(r.id.camera_preview);     preview.addview(mpreview); } 

and launching intent

cam.setonclicklistener(new onclicklistener(){                  @override                 public void onclick(view v) {                     intent = new intent(mess.this,cam.class);                     i.putextra("output", vids);                     startactivityforresult(i,2);                     dialog.cancel();//todo                  }              }); 

nothing passed in value.. null... activityforresult... in activity, passed value.

you put value:

i.putextra("string","value"); 

then value:

string value = getintent().getextras().getstring("value"); 

the second line should be

string value = getintent().getextras().getstring("string");