Xcde simple writer code#

Network calls and callbacks were handled through notifications, which I usually recommend to avoid. The alert would not only show once but multiple times.Īfter a more in-depth investigation, I discovered that the problem was caused by the networking stack of the app, which had the wrong architecture. Since that was a new item, it clearly was not possible. But sometimes, when adding a new item, the app would reply with an alert saying that the object already existed on the server. The app displayed a list of items, and the user could add more. I once worked on a project where strange bugs happened randomly.

Xcde simple writer code#

Many developers simply put together pieces of networking code they find on Stack Overflow, o use a networking library.īut networking has a lot of hidden pitfalls. It’s easy to say: “I need to get some data from a REST API.” But such sentence hides a ton of complexity. Moreover, many parts of your app’s architecture need to interact, making the task more complicated than it might seem at first. When making asynchronous network calls, you need to combine several features of Swift, SwiftUI, and the Foundation framework. Writing the networking layer of an iOS app, though, is not a simple task. And often, such a web service is a REST API that returns data in JSON format. Networked apps usually interface with a remote web service that provides data. Networking is a requirement for most modern iOS apps.