How to get tracking number for items using order id for an order

Question

I am getting the order information using

 $objectManager = \Magento\Framework\App\ObjectManager::getInstance();
 $order = $objectManager->create('Magento\Sales\Api\OrderRepositoryInterface')->get($orderid);

Then I am iterating the $order to get the ordered item related info. How can I get the tracking number for those items as well?

 <?php foreach ($order->getAllVisibleItems() as $item): ?>
    // how to use $item to get tracking number
 <?php?>

I came to this this solution but this didn't work and I don't want to iterate it $order->getTracksCollection() as I am already in a loop of <?php foreach ($order->getAllVisibleItems() as $item): ?>

 $tracksCollection = $order->getTracksCollection();
 foreach ($tracksCollection->getItems() as $item) {
    echo $track->getTrackNumber(); // Tracking number
 }

Answer 1

Try this,

$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$order = $objectManager->create('Magento\Sales\Model\Order')->load($orderid);
$tracksCollection = $order->getTracksCollection();
foreach ($tracksCollection->getItems() as $track) {
    $trackNumbers[] = $track->getTrackNumber();
}

The problem seems you're not loading order object.

Hope this helps.