Multithreading and Grand Central Dispatch on iOS for Beginners Tutorial

rwenderlich · March 4, 2016, 10:44am

Have you ever written an app where you tried to do something, and there was a long pause while the UI was unresponsive? This is usually a sign that your app needs multithreading! In this tutorial, you’ll get hands on experience with the core multithreading API available on iOS: Grand Central Dispatch. You’ll take an […]

This is a companion discussion topic for the original entry at https://www.raywenderlich.com/3049-multithreading-and-grand-central-dispatch-on-ios-for-beginners-tutorial

dant00ine · December 19, 2016, 5:39pm

Anyone know of a working build? There was an outdated compiler error so I changed it to default and made a few other suggested changes and now there are 15 warnings and no errors, but I don’t think the app is working as expected.

ievgen · February 9, 2017, 4:27pm

Hi, yes, there were three issues with running initial app on ios 10, Xcode 8

unsupported processor compiler, you fixed it
app transport security issue ios - Transport security has blocked a cleartext HTTP - Stack Overflow
grab button was disabled from the start, I just commented out the logics this grabButton.enabled = NO

wperegoy · August 8, 2017, 5:36pm

After fixing the build settings and getting the project to run, I’m seeing the following errors:

libMobileGestalt MobileGestalt.c:550: no access to InverseDeviceID (see rdar: //problem/11744455)
vickiwenderlich.com just appears to be down - Vickiwenderlich.com down? Current problems and status.

shogunkaramazov · November 16, 2017, 4:06pm

This tutorial is more than six months old so questions are no longer supported at the moment for it. We will update it as soon as possible. Thank you! :]