November 2013
Intermediate to advanced
576 pages
19h 3m
English
book
iOS Components and Frameworks: Understanding the Advanced Features of the iOS SDK
by Kyle Richter, Joe Keeley
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Checking for Services
To directly determine whether location services are enabled for the device, there is a class method available on the CLLocationManager called locationServicesEnabled.
if ([CLLocationManager locationServicesEnabled]){ ICFLocationManager *appLocationManager = [ICFLocationManager sharedLocationManager]; [appLocationManager.locationManager startUpdatingLocation];}else{ NSLog(@"Location Services disabled.");}
This can be used to customize how the app deals with having or not having the current location available. An app that deals with locations should gracefully handle when the user does not grant access to the current location, and give the user clear instructions for enabling access ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.