Select multiple images from google photo but only show one

[william-shih]

With ng-file-upload, I set up the server which can support to upload files even from the cellphone. I can select multiple images in my cellphone to upload. However, when I select multiple images from google photo to upload it only show one image. I debug my code and find there is only one file in the filelist from google photo even select multiple images. The way I get the filelist is from the event (event.target.files) is shown below (skip some arguments and code):

<input type="file" uploadbtn="filelist" multiple ng-show="false">

.directive('uploadbtn', [ function() {                                                                                                      
    return {                                                                                                                                                                                   
        link: function(scope, element, attr, ctrl) {                                                                                                                                                                                                                                                                                     
            element.bind('change', function(event) {                                                                                                                                       
                scope.$apply(function() {                                                                                                                                                      
                    var files = event.target.files,                                                                                                                                                                                                                                                                                           
                    if (files.length) {                                                                                                                                                        
                           ... // list file to upload from files                                                                                                                      
                    }                                                                                                                                                                                                                                                                                                                                               
                });                                                                                                                                                                            
            });                                                                                                                                                                                
        }                                                                                                                                                                                      
    };                                                                                                                                                                                         
}]) 

Is there a limit for google photo to do multiple upload?