Features and status about magento2-gallery HOT 4 CLOSED

<?php
$_objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$gallery = $_objectManager->get('DR\Gallery\Block\Gallery');

$a = $gallery->getGallery(); // Not work
echo $this->getGallery()->getId(); // Not Work
var_dump(count($a));
?>

/**
     * Get Gallery Collection (status = 1)
     * @return mixed Gallery Collection
     */
    public function getGalleryCollection()
    {
        $result = [];
        $galleries = $this->galleryRepository->getAllGallery();
        if (is_null($galleries) || count($galleries) <= 0) return [];
        foreach($galleries as $gallery) {
            $_gal = [
                'id' => $gallery->getId(),
                'name' => $gallery->getName(),
                'status' => $gallery->getStatus(),
                'images' => []
            ];
            $images = $gallery->getImageCollection();
            if (count($images) > 0) {
                $_img = [];
                foreach ($images as $image) {
                    if ($image->getStatus()) {
                        $img = [
                            'id' => $gallery->getId(),
                            'name' => $gallery->getName(),
                            'path' => $image->getPath()
                        ];
                        array_push($_img, $img);
                    }
                }
                $_gal['images'] = $_img;
            }
            array_push($result, $_gal);
        }
        return $result;
    }

/**
     * Get All Gallery with status = 1
     * @return mixed
     */
    public function getAllGallery() {
        return $this->galleryCollectionFactory->create()
            ->addFieldToFilter("status", "1")
            ->setOrder('updated_at', 'DESC');
    }

<?php
$_objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$gallery = $_objectManager->get('DR\Gallery\Block\Gallery');
$galleries = $gallery->getGalleryCollection();
?>