Cannot login Facebook with Android Facebook SDK 4.3 -

in android app use facebook sdk 4.3. try login facebook using loginbutton. here code

@override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     facebooksdk.sdkinitialize(this.getapplicationcontext());     callbackmanager = callbackmanager.factory.create();     setcontentview(r.layout.activity_main);     loginbutton btnloginfb = (loginbutton) findviewbyid(r.id.login_button);     btnloginfb.setreadpermissions("email", "user_likes", "user_friends");     btnloginfb.registercallback(callbackmanager, new facebookcallback<loginresult>() {          @override         public void onsuccess(loginresult result) {             log.i("test","success");          }          @override         public void oncancel() {             log.i("test","cancel");          }          @override         public void onerror(facebookexception error) {           }     });   }   @override protected void onactivityresult(int requestcode, int resultcode, intent data) {     super.onactivityresult(requestcode, resultcode, data);     callbackmanager.onactivityresult(requestcode, resultcode, data);  } 

when app runs, after click button login, displays facebook activity, requires email , password login. callback doesn't run onsucess. runs oncancel. don't understand wrong?

just use code login button.

loginbutton = (loginbutton) findviewbyid(r.id.login_button);    list < string > permissionneeds = arrays.aslist("user_photos", "email",  	"user_birthday", "public_profile", "accesstoken");  loginbutton.registercallback(callbackmanager,  new facebookcallback < loginresult > () {@override  	public void onsuccess(loginresult loginresult) {    		system.out.println("onsuccess");    		string accesstoken = loginresult.getaccesstoken()  			.gettoken();  		log.i("accesstoken", accesstoken);    		graphrequest request = graphrequest.newmerequest(  		loginresult.getaccesstoken(),  		new graphrequest.graphjsonobjectcallback() {@override  			public void oncompleted(jsonobject object,  			graphresponse response) {  				log.i("loginactivity", response.tostring());  				try {  					id = object.getstring("id");  					try {  						url profile_pic = new url(  							"http://graph.facebook.com/" + id + "/picture?type=large");  						log.i("profile_pic",  						profile_pic + "");    					} catch (malformedurlexception e) {  						e.printstacktrace();  					}  					name = object.getstring("name");  					email = object.getstring("email");  					gender = object.getstring("gender");  					birthday = object.getstring("birthday");  				} catch (jsonexception e) {  					e.printstacktrace();  				}  			}  		});  		bundle parameters = new bundle();  		parameters.putstring("fields",  			"id,name,email,gender, birthday");  		request.setparameters(parameters);  		request.executeasync();  	}    	@override  	public void oncancel() {  		system.out.println("oncancel");  	}    	@override  	public void onerror(facebookexception exception) {  		system.out.println("onerror");  		log.v("loginactivity", exception.getcause().tostring());  	}  });

for more information @ my answer here