I really appreciate finding your tutorials here. They have been very helpful.
I wonder if you could advise me on my app. I have used hidden WKWebView objects to start URL downloads (via load()), which run on the main thread. Then I would inject a Javascript script to scan the DOM I get and send messages to a delegate object of my own design to capture the data of interest to me. This has worked fine for me, but as I now need to download many pages at a time for category parsing, I’ve noticed how the UI will block (thanks to your Concurrency Tutorial for insights on this!).
My question is whether I can use my existing architecture with URLSession, or whether I need to scrap the Javascript parsing and get some kind of HTML Parser library for Swift instead. I suspect that the URLSession design really isn’t setup to manage script injection. Am I right?
Thanks for any insights you can provide.
Best regards,
Thanks, Audrey. I’ll go look for a few of those libraries then instead and rewrite my exotic app using something a bit more standard so I can capitalize on the background behavior. Being a lone programmer, I sometimes forget that solutions that I devise from reading the Apple docs really aren’t the accepted way of doing things. It just seemed to be the way to make things work at the time I was looking into this (late 2014 thru 2015).
Regards,
Mike
hi @audrey , Thanks for your great video tutorial. I really want to understand about networking. is there any prerequisite course that I should watch before I watch this course about Networking with URL Session? this is the first section that i watch in RayWenderlich.
my education background is actually chemical engineering, so…I don’t know, I am not really comfortable to study about this topic. maybe you could give me suggestion what topic that I study first ? I am a beginner in iOS development, i understand about basic and intermediate swift. but when I follow other tutorials that needs networking and concurrency, i feel bad,
because i just copy the code, I don’t really grasp about it, I want to understand. Thanks Audrey, I hope you understand my confusion
hi! if you’re familiar with Swift, and comfortable with writing completion handlers, you should be fine with this course. I was the same, before taking on this video course — I only knew how to copy-paste-edit the simplest URLSession task. When I started updating the original course, I was amazed how much more there was to networking!
If you want a quick look, you could work through this tutorial first:
It builds a version of the same HalfTunes app that this course uses.
There’s an updated version (Xcode 9, iOS 11, Swift 4) of this course that should be appearing soon — mainly JSON parsing and some new background/continuity features.
