android - com.firebase.client.FirebaseException: Failed to bounce to type JSON -

-

i have code here..

main_menu.java

@override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main_menu);         getdata();     }  private void getdata(){         string url = config.data_url+a_username;         requestqueue requestqueue = volley.newrequestqueue(this);         log.d(tag,"merging url , name success");         stringrequest stringrequest = new stringrequest(request.method.get, url, new response.listener<string>() {             @override             public void onresponse(string response) {                 showjson(response);                 log.d(tag,"show json success");             }         },                 new response.errorlistener() {                     @override                     public void onerrorresponse(volleyerror error) {                      }                 });         requestqueue.add(stringrequest); } private void showjson(string response){          try {             jsonobject jsonobject = new jsonobject(response);             jsonarray result = jsonobject.getjsonarray(config.json_array);             jsonobject userid = result.getjsonobject(0);             id = userid.getstring(config.key_id).tostring().trim();             toast.maketext(getapplicationcontext(),id,toast.length_long).show();             log.d(tag,"getting id success");         } catch (jsonexception e) {             e.printstacktrace();         }     }  @override     protected void  onstart(){         super.onstart();         real_id = id.tostring();         mref = new firebase("https://connection-4f6d8.firebaseio.com/"+real_id);         mref.addvalueeventlistener(new valueeventlistener() {             @override             public void ondatachange(datasnapshot datasnapshot) {                 string text = datasnapshot.getvalue(string.class);                 if(text.equals("unlocked")){                     senddataonwifi("0");                 }             }              @override             public void oncancelled(firebaseerror firebaseerror) {              }         });     }

execption:

fatal exception: main process: com.example.jaypeetan.mftis, pid: 32112com.firebase.client.firebaseexception: failed bounce type @ com.firebase.client.datasnapshot.getvalue(datasnapshot.java:185) @ com.example.jaypeetan.mftis.main_menu$6.ondatachange(main_menu.java:290) @ com.firebase.client.core.valueeventregistration.fireevent(valueeventregistration.java:56) @ com.firebase.client.core.view.dataevent.fire(dataevent.java:45)                     @ com.firebase.client.core.view.eventraiser$1.run(eventraiser.java:38) @ android.os.handler.handlecallback(handler.java:733) @ android.os.handler.dispatchmessage(handler.java:95) @ android.os.looper.loop(looper.java:149) @ android.app.activitythread.main(activitythread.java:5257) @ java.lang.reflect.method.invokenative(native method) @ java.lang.reflect.method.invoke(method.java:515) @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:793) @ com.android.internal.os.zygoteinit.main(zygoteinit.java:609) @ dalvik.system.nativestart.main(native method) caused by: com.fasterxml.jackson.databind.jsonmappingexception: can not deserialize instance of java.lang.string out of start_array token @ [source: java.io.stringreader@22c79a40; line: 1, column: 1] @ com.fasterxml.jackson.databind.deserializationcontext.mappingexception(deserializationcontext.java:575) @ com.fasterxml.jackson.databind.deser.std.stringdeserializer.deserialize(stringdeserializer.java:46) @ com.fasterxml.jackson.databind.deser.std.stringdeserializer.deserialize(stringdeserializer.java:11) @ com.fasterxml.jackson.databind.objectmapper._readmapandclose(objectmapper.java:2888) @ com.fasterxml.jackson.databind.objectmapper.readvalue(objectmapper.java:2034) @ com.firebase.client.datasnapshot.getvalue(datasnapshot.java:183)                                                                                     ... 13 more

i believe error json need user id in database im getting correctly problem when tried connect in firebase giving me error.. tried change variable real_id value number , working when depends on json gives me error.. please me :d

this snapchat of firebase enter image description here

you store mix of string numbers in same list. in code ask string:

// fails when snapshot value number string text = datasnapshot.getvalue(string.class);

that won't work, since number not string (even though can converted one).

if insist on mixing types, code extracts value must able handle mixed types. example:

public void ondatachange(datasnapshot datasnapshot) {     string text = string.valueof(datasnapshot.getvalue());

by using datasnapshot.getvalue() without type, whatever type stored in snapshot. convert string string.valueof().

i recommend sticking single uniform type in list. it'll make code less error prone , easier understand.


Comments

Post a Comment

Popular posts from this blog

gridview - Yii2 DataPorivider $totalSum for a column -

-
i have order , ordersearch models. in order list (actionindex) gridview there filtering , sorting. on of columns in order order_total (sum of products in order). i need implement sum of order_total in gridview. if manually counting activedataprovider->getmodels() array_map spend 3 seconds 3000 orders (localhost). don't want miss time. i see 2 ways make faster: create cache every filter , update lifetime (horrible) the interesting can right in ordersearch->search() method $query method. don't understand how can pass in controller. example of code 2nd way: class ordersearch extends order { public $totalsum; public function search($params) { $query = order::find(); $dataprovider = new activedataprovider([ 'query' => $query, ]); $this->load($params); $this->totalsum = $query->sum('order_total'); // works fast return $dataprovider; } } after i
Read more

java - Suppress Jboss version details from HTTP error response -

-
my jboss verson jboss eap 6.3 when kind of error response sent jboss, adds server information response. following sample row response: http/1.1 400 bad request server: apache-coyote/1.1 content-type: text/html;charset=utf-8 content-length: 2391 date: tue, 19 jul 2016 09:30:46 gmt connection: close jboss web/7.4.8.final-redhat-4 - jbweb000064: error report jbweb000065: http status 400 - org.codehaus.jackson.map.jsonmappingexception: can not construct instance of mybean.type string value 'xyz': value not 1 of declared enum instance names @ [source: org.jboss.resteasy.core.interception.messagebodyreadercontextimpl$inputstreamwrapper@5e421c2b; line: 14, column: 26] (through reference chain: requestargs["request"]) jbweb000309: type jbweb000067: status report jbweb000068: message org.codehaus.jackson.map.jsonmappingexception: can not construct instance of mybean.type string value 'xyz': value not 1 of declared enum instance names @ [source: org.jboss
Read more

Sass watch command compiles .scss files before full sftp upload -

-
i use winscp download , edit .scss files , sass on linux (on server) compile them .css . after saving file, use: sass scss/style.scss css/style.css , replaces css file compiled sccs. the problem i want skip part return command line after editing scss file, sake of automation , saving time. but, if use watch command: sass --watch scss/style.scss:css/style.css synchronize 2 files, alerts nonexistent css errors pop up: change detected to: scss/style.scss error scss/style.scss (line 232: invalid css after "...ht: bold; line-": expected "{", "") note that when file uploads quicker usual (sometimes happens) watch command job, no errors. this because, when file upload takes time, sass compiles scss file (on server) before uploaded remote folder. thus, compiles part of file, resulting in css errors. is there way set timer watch command waits few seconds after detects changes , before compiling? any other way overcome is, of course,
Read more