How to make an activity indicator when uploading a photo in an ios application?

Question

iOS

It turned out only to call the indicator when loading the page, how to do something similar when sliding, loading a photo?

Answer 1

You need to separate the load methods into a separate thread. Start UIActivityIndicator in the main thread, and start the photo upload in the background thread. As soon as it ends, go to the main thread and display the downloaded content.
For these purposes, it is convenient to use GCD

//  запускаем индикатор
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0), ^{
        // грузим контент
        dispatch_async(dispatch_get_main_queue(), ^{
           // останавливаем индикатор и отображаем загруженный контент
        });
    });