Question

I have to Implement a UITableView that should display all hosted photos. Load the photos synchronously and asynchronously in different tabs.
how to call images from url??

Answer 1

To load an image from a url:

NSData *imageData = [NSData dataWithContentsOfURL:yourURL];
UIImage *image = [UIImage imageWithData:imageData];

You can use GCD to perform the actions asynchronously. There’s a good tutorial of almost exactly what you’re trying to achieve here