angularjs - Can't get url of image uploaded to firebase storage -


i new ionic, program takes picture , sent firebase. question is: how can show url of image in view? have controller:

i appreciate if can help, greetings

.controller("formctrl", function($scope,sharedutils,$ionicpopup,$state, $rootscope, $cordovacamera)  {    $scope.capturarfoto = function(sourcetype) {     var options = {          quality : 75,          destinationtype : camera.destinationtype.file_uri,          sourcetype : sourcetype,          encodingtype: camera.encodingtype.jpeg,          popoveroptions: camerapopoveroptions,          targetwidth: 500,          targetheight: 500,          savetophotoalbum: false      };          $cordovacamera.getpicture(options).then(function(imagedata) {     // $scope.images = imagedata;     var storageref = firebase.storage().ref();   // filename = imagedata.name;    var getfileblob = function(url, cb) {      var xhr = new xmlhttprequest();      xhr.open("get", url);      xhr.responsetype = "blob";      xhr.addeventlistener('load', function() {          cb(xhr.response);      });      xhr.send();  };    var blobtofile = function(blob, name) {      blob.lastmodifieddate = new date();      blob.name = name;      return blob;  };    var getfileobject = function(filepathorurl, cb) {      getfileblob(filepathorurl, function(blob) {          cb(blobtofile(blob, new date().gettime()));  // segundo parametro es el nombre de imagen      });  };           getfileobject(imagedata, function(fileobject) {        var metadata = {      'contenttype': fileobject.type    };      storageref.child('images/' + fileobject.name).put(fileobject, metadata);        uploadtask.on('state_changed', null, function(error) {      // [start onfailure]      console.error('upload failed:', error);      alert('upload failed:', error);      // [end onfailure]    }, function() {      console.log('uploaded',uploadtask.snapshot.totalbytes,'bytes.');      console.log(uploadtask.snapshot.metadata);      var url = uploadtask.snapshot.metadata.downloadurls[0];      console.log('file available at', url);      // [start_exclude]      document.getelementbyid('linkbox').innerhtml = '<img src="' +  url + '">';      // [end_exclude]    });    });      }, function(error) {          console.error(error);          alert(error);      });      };
<ion-view style="" class=" " id="page8" title="enviar incidencia">      <ion-content class="has-header" padding="true" ng-controller="formctrl">      <button class="button button-full button-assertive" ng-click="capturarfoto()">             take photo  </button>       </ion-content>  </ion-view>

fixed , working me:

before: uploadtask.on('state_changed', null, function(error) { after: var uploadtask = uploadtask.on('state_changed', null, function(error) {

:)


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