pagination magento

1protected function _prepareLayout()
2{
3    parent::_prepareLayout();
4    $this->pageConfig->getTitle()->set(__('News'));
5
6
7    if ($this->getNews()) {
8        $pager = $this->getLayout()->createBlock(
9            'Magento\Theme\Block\Html\Pager',
10            'test.news.pager'
11        )->setAvailableLimit(array(5=>5,10=>10,15=>15))->setShowPerPage(true)->setCollection(
12            $this->getNews()
13        );
14        $this->setChild('pager', $pager);
15        $this->getNews()->load();
16    }
17    return $this;
18}
19

1public function getNews()
2    {
3      //get values of current page
4        $page=($this->getRequest()->getParam('p'))? $this->getRequest()->getParam('p') : 1;
5    //get values of current limit
6        $pageSize=($this->getRequest()->getParam('limit'))? $this->getRequest()->getParam('limit') : 1;
7
8
9        $newsCollection = $this->newscollectionFactory->create();
10        $newsCollection->addFieldToFilter('is_active',1);
11        $newsCollection->setOrder('title','ASC');
12        $newsCollection->setPageSize($pageSize);
13        $newsCollection->setCurPage($page);
14        return $newsCollection;
15    }
16
17

1    <?php if ($block->getPagerHtml()): ?>
2        <div class="order-products-toolbar toolbar bottom"><?php echo $block->getPagerHtml(); ?></div>
3    <?php endif ?>
4

1public function getPagerHtml()
2{
3    return $this->getChildHtml('pager');
4}
5