camera.getPicture之后的ng-bind-html

Question

在我的用户使用navigator.camera.getPicture选择附件后，我正在尝试使用图像名称更新div的HTML。我可以正常更新HTML，但不能在用户选择附件后进行更新。我错过了什么容易的事？

Div我想更新。

<div ng-bind-html="attachmentName"></div>

控制器

.controller('SubmitTicketCtrl', function($scope, $ionicLoading, $ionicPopup,
    SubmitTicketService) {
$scope.submitData = {};
$scope.attachment;
$scope.attachmentName = 'No attachment selected'; // This works.

$scope.addAttachment = function() {
    navigator.camera.getPicture(onSuccess, onFail, { // This works fine.
        quality: 50,
        destinationType: Camera.DestinationType.FILE_URI,
        sourceType: Camera.PictureSourceType.PHOTOLIBRARY,
        targetWidth: 800,
        targetHeight: 800
    });

    function onSuccess(imageURI) {
        alert(imageURI.substr(imageURI.lastIndexOf('/') + 1)); // I can see the image name in the popup
        $scope.attachmentName = imageURI.substr(imageURI.lastIndexOf('/') + 1); // This doesn't work
        $scope.attachment = imageURI;
    }

    function onFail(message) {
        alert('Failed because: ' + message);
    }
}