android - Get message from broadcast receiver to activity -

i know question has been asked many times still unable solve problem.i want otp sms in edittext of activity.for using broadcast receiver.

code broadcast receiver:

private static final string tag = receivesms.class.getsimplename();     private smsreceivedlistner smsreceived = null;      @override     public void onreceive(context context, intent intent) {                      //code sms....                      log.e(tag, "otp received: " + verificationcode);                     if (smsreceived != null) {                         smsreceived.onsmsreceived(verificationcode);                     } else {                         if (constants.isloggingenable) {                             logger.logerror(tag, "sms listner null");                          }                     }                  }             }         } catch (exception e) {             log.e(tag, "exception: " + e.getmessage());         }     }      public void setonsmsreceivedlistener(context context) {         this.smsreceived = (smsreceivedlistner) context;     } 

activity code

public class enterotp extends masteractivity implements view.onclicklistener, ontaskcomplete, smsreceivedlistner {      private static final string tag = enterotp.class.getsimplename();      private context context;         @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.otp);         context = this;         init();     }      private void init() {          setuptoolbar();             receivesms = new receivesms();         receivesms.setonsmsreceivedlistener(this);          } 

i have used interface getting null.so can otp.

p.s- dont want start new activity via intent because activity running only, if via intent can pass otp without starting new activity , maintaing stack well?

if want receive sms when activity running use code:

private void init() {      receivesms = new receivesms();      receivesms.setonsmsreceivedlistener(this);      registerreceiver(receivesms, new intentfilter("android.provider.telephony.sms_received")); } 

and remove receiver androidmanifest.xml

i hope helped you.

edit:

in ondestroy must use code:

protected void ondestroy() {     super.ondestroy();     // ...     unregisterreceiver(receivesms); }