a.js

$scope.loadingNewPhoto = false;

$cordovaCamera.getPicture({
  sourceType: (index == 1) ? Camera.PictureSourceType.PHOTOLIBRARY : Camera.PictureSourceType.CAMERA,
  destinationType: (typeof Camera !== "undefined") ? Camera.DestinationType.FILE_URI : false,
  targetWidth: 512,
  targetHeight: 512
}).then(function(imageData) {

  var ft = new FileTransfer();

  $scope.loadingNewPhoto = true;

  ft.upload(
    imageData,
    encodeURI(UrlService.baseUrl + "/api/v1/usuarios/me/foto"),
  function (result) {
    $scope.userInfo.foto = result.data.foto;

    $scope.loadingNewPhoto = false;
  },
  function (err) {
    alert('Houve um erro \n' + err);
  });

}, function(err) {
    console.log('## erro: ', err);
});